Publications


Forward-backward charge asymmetry of electron pairs above the Z<sup>0</sup> pole

Physical Review Letters 77 (1996) 2616-2621

We present a measurement of the forward-backward charge asymmetry of the process pp¯ → Z0/γ + X, Z0/γ → e+e− at Mee > MZ using 110 pb−1 of data at √ s = 1.8 TeV collected at the Collider Detector at Fermilab. The measured charge asymmetries are 0.43 ± 0.10 in the invariant mass region Mee > 105 GeV/c2, and 0.070 ± 0.016 in the region 75 < Mee < 105 GeV/c2. These results are consistent with the standard model values of 0.528 ± 0.009 and 0.052 ± 0.002, respectively. © 1996 The American Physical Society.


Measurement of the B<sup>-</sup> and B<sup>−0</sup> meson lifetimes using semileptonic decays

Physical Review Letters 76 (1996) 4462-4467

The lifetimes of the B- and B−0 mesons are measured using the partially reconstructed semileptonic decays B−→D1-v−X, where D is either a D0 or D*+ meson. The data were collected by the CDF detector at the Fermilab Tevatron collider during 1992-1993 and correspond to 19.3 pb−1 of p−p collisions at s = 1.8 TeV. We measure the decay length distributions and find the lifetimes to be τ(B−) = 1.56±0.13±0.06 ps and τ(B−0) = 1.54±0.08±0.06 ps, and the ratio of lifetimes to be τ(B−)/τ(B−0) = 1.01±0.11±0.02, where the first uncertainties are statistical and the second are systematic. © 1996 The American Physical Society.


Measurement of the Lambda(b)(0) lifetime using Lambda(b)(0)->Lambda(c)(+)l(-)(nu)over-bar

PHYSICAL REVIEW LETTERS 77 (1996) 1439-1443

F Abe, H Akimoto, A Akopian, MG Albrow, SR Amendolia, D Amidei, J Antos, C AnwayWiese, S Aota, G Apollinari, T Asakawa, W Ashmanskas, M Atac, F Azfar, P AzziBacchetta, N Bacchetta, W Badgett, S Bagdasarov, MW Bailey, J Bao, P deBarbaro, A BarbaroGaltieri, VE Barnes, BA Barnett, E Barzi, G Bauer, T Baumann, F Bedeschi, S Behrends, S Belforte, G Bellettini, J Bellinger, D Benjamin, J Benlloch, J Bensinger, D Benton, A Beretvas, JP Berge, J Berryhill, S Bertolucci, A Bhatti, K Biery, M Binkley, D Bisello, RE Blair, C Blocker, A Bodek, W Bokhari, V Bolognesi, D Bortoletto, J Boudreau, L Breccia, C Bromberg, N Bruner, E BuckleyGeer, HS Budd, K Burkett, G Busetto, A ByonWagner, KL Byrum, J Cammerata, C Campagnari, M Campbell, A Caner, W Carithers, D Carlsmith, A Castro, D Cauz, Y Cen, F Cervelli, PS Chang, PT Chang, HY Chao, J Cbapman, MT Cheng, G Chiarelli, T Chikamatsu, CN Chiou, L Christofek, S Cihangir, AG Clark, M Cobal, M Contreras, J Conway, J Cooper, M Cordelli, C Couyoumtzelis, D Crane, D CroninHennessy, R Culbertson, JD Cunningham, T Daniels, F DeJongh, S Delchamps, S DellAgnello, M DellOrso, R Demina, L Demortier, B Denby, M Deninno, PF Derwent, T Devlin, JR Dittmann, S Donati, J Done, T Dorigo, A Dunn, N Eddy, K Einsweiler, JE Elias, R Ely, E Engels, D Errede, S Errede, Q Fan, I Fiori, B Flaugher, GW Foster, M Franklin, M Frautschi, J Freeman, J Friedman, TA Fuess, Y Fukui, S Funaki, G Gagliardi, S Galeotti, M Gallinaro, M GarciaSciveres, AF Garfinkel, C Gay, S Geer, DW Gerdes, P Giannetti, N Giokaris, P Giromini, L Gladney, D Glenzinski, M Gold, J Gonzalez, A Gordon, AT Goshaw, K Goulianos, H Grassmann, L Groer, C GrossoPilcher, G Guillian, RS Guo, C Haber, E Hafen, SR Hahn, R Hamilton, R Handler, RM Hans, K Hara, AD Hardman, B Harral, RM Harris, SA Hauger, J Hauser, C Hawk, E Hayashi, J Heinrich, KD Hoffman, M Hohlmann, C Holck, R Hollebeek, L Holloway, A Holscher, S Hong, G Houk, P Hu, BT Huffman, R Hughes, J Huston, J Huth, J Hylen, H Ikeda, M Incagli, J Incandela, G Introzzi, J Iwai, Y Iwata, H Jensen, U Joshi, RW Kadel, E Kajfasz, H Kambara, T Kamon, T Kaneko, K Karr, H Kasha, Y Kato, TA Keaffaber, L Keeble, K Kelley, RD Kennedy, R Kephart, P Kesten, D Kestenbaum, RM Keup, H Keutelian, F Keyvan, B Kharadia, BJ Kim, DH Kim, HS Kim, SB Kim, SH Kim, YK Kim, L Kirsch, P Koehn, K Kondo, J Konigsberg, S Kopp, K Kordas, W Koska, E Kovacs, W Kowald, M Krasberg, J Kroll, M Kruse, T Kuwabara, SE Kuhlmann, E Kuns, AT Laasanen, N Labanca, S Lammel, JI Lamoureux, T LeCompte, S Leone, JD Lewis, P Limon, M Lindgren, TM Liss, N Lockyer, O Long, C Loomis, M Loreti, J Lu, D Lucchesi, P Lukens, S Lusin, J Lys, K Maeshima, A Maghakian, P Maksimovic, M Mangano, J Mansour, M Mariotti, JP Marriner, A Martin, JAJ Matthews, R Mattingly, P McIntyre, P Melese, A Menzione, E Meschi, S Metzler, C Miao, T Miao, G Michail, R Miler, H Minato, S Miscetti, M Mishina, H Mitsushio, T Miyamoto, S Miyashita, N Moggi, Y Morita, J Mueller, A Mukherjee, T Muller, P Murat, H Nakada, I Nakano, C Nelson, D Neuberger, C NewmanHolmes, M Ninomiya, L Nodulman, SH Oh, KE Ohl, T Ohmoto, T Ohsugi, R Oishi, M Okabe, T Okusawa, R Oliveira, J Olsen, C Pagliarone, R Paoletti, V Papadimitriou, SP Pappas, S Park, A Parri, J Patrick, G Pauletta, M Paulini, A Perazzo, L Pescara, MD Peters, TJ Philips, G Piacentino, M Pillai, KT Pitts, R Plunkett, L Pondrom, J Proudfoot, F Ptohos, G Punzi, K Ragan, A Ribon, F Rimondi, L Ristori, WJ Robertson, T Rodrigo, S Rolli, J Romano, L Rosenson, R Roser, WK Sakumoto, D Saltzberg, A Sansoni, L Santi, H Sato, V Scarpine, P Schlabach, EE Schmidt, MP Schmidt, A Scribano, S Segler, S Seidel, Y Seiya, G Sganos, M Shapiro, NM Shaw, Q Shen, PF Shepard, M Shimojima, M Shochet, J Siegrist, A Sill, P Sinervo, P Singh, J Skarha, K Sliwa, FD Snider, T Song, J Spalding, T Speer, P Sphicas, F Spinella, M Spiropulu, L Spiegel, L Stanco, J Steele, A Stefanini, K Strahl, J Strait, R Strohmer, D Stuart, G Sullivan, A Soumarokov, K Sumorok, J Suzuki, T Takada, T Takahashi, T Takano, K Takikawa, N Tamura, F Tartarelli, W Taylor, PK Teng, Y Teramoto, S Tether, D Theriot, TL Thomas, R Thun, M Timko, P Tipton, A Titov, S Tkaczyk, D Toback, K Tollefson, A Tollestrup, J Tonnison, JF deTroconiz, S Truitt, J Tseng, N Turini, T Uchida, N Uemura, F Ukegawa, G Unal, S vandenBrink, S Vejcik, G Velev, R Vidal, M Vondracek, D Vucinic, RG Wagner, RL Wagner, J Wahl, C Wang, CH Wang, G Wang, J Wang, MJ Wang, QF Wang, A Warburton, T Watts, R Webb, C Wei, C Wendt, H Wenzel, WC Wester, AB Wicklund, E Wicklund, R Wilkinson, HH Williams, P Wilson, BL Winer, D Wolinski, J Wolinski, X Wu, J Wyss, A Yagil, W Yao, K Yasuoka, Y Ye, GP Yeh, P Yeh, M Yin, J Yoh, C Yosef, T Yoshida, D Yovanovitch, I Yu, L Yu, JC Yun, A Zanetti, F Zetti, L Zhang, W Zhang, S Zucchelli


Ratios of bottom meson branching fractions involving J/Ψ mesons and determination of b quark fragmentation fractions

Physical Review D - Particles, Fields, Gravitation and Cosmology 54 (1996) 6596-6609

We report a measurement of the ratios of the decay rates of the B+, B0, and B0s mesons into exclusive final states containing a J/Ψ meson. The final states were selected from 19.6 pb-1 of pp collisions recorded by the Collider Detector at Fermilab. These data are interpreted to determine the b quark fragmentation fractions fu, fd, and fs. We also determine the branching fractions for the decay modes (formula presented). We discuss the implications of these measurements to B meson decay models. © 1996 The American Physical Society.


Measurement of the branching ratios b -> e nu Chi, mu nu Chi, tau nu Chi, and nu Chi

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS 71 (1996) 379-389

M Acciarri, A Adam, O Adriani, M AguilarBenitez, S Ahlen, B Alpat, J Alcaraz, G Alemanni, J Allaby, A Aloisio, G Alverson, MG Alviggi, G Ambrosi, H Anderhub, VP Andreev, T Angelescu, D Antreasyan, A Arefiev, T Azemoon, T Aziz, P Bagnaia, L Baksay, RC Ball, S Banerjee, K Banicz, R Barillere, L Barone, P Bartalini, A Baschirotto, M Basile, R Battiston, A Bay, F Becattini, U Becker, F Behner, J Berdugo, P Berges, B Bertucci, BL Betev, M Biasini, A Biland, GM Bilei, JJ Blaising, SC Blyth, GJ Bobbink, R Bock, A Bohm, B Borgia, A Boucham, D Bourilkov, M Bourquin, D Boutigny, E Brambilla, JG Branson, V Brigljevic, IC Brock, A Buijs, A Bujak, JD Burger, WJ Burger, J Busenitz, A Buytenhuijs, XD Cai, M Campanelli, M Capell, GC Romeo, M Caria, G Carlino, AM Cartacci, J Casaus, G Castellini, R Castello, F Cavallari, N Cavallo, C Cecchi, M Cerrada, F Cesaroni, M Chamizo, A Chan, YH Chang, UK Chaturvedi, M Chemarin, A Chen, G Chen, GM Chen, HF Chen, HS Chen, M Chen, G Chiefari, CY Chien, MT Choi, L Cifarelli, F Cindolo, C Civinini, I Clare, R Clare, HO Cohn, G Coignet, AP Colijn, N Colino, S Costantini, F Cotorobai, B delaCruz, A Csilling, TS Dai, R DAlessandro, R deAsmundis, H DeBoeck, A Degre, K Deiters, P Denes, F DeNotaristefani, D DiBitonto, M Diemoz, D vanDierendonck, F DiLodovico, C Dionisi, M Dittmar, A Dominguez, A Doria, I Dorne, MT Dova, E Drago, D Duchesneau, P Duinker, I Duran, S Dutta, S Easo, Y Efremenko, H ElMamouni, A Engler, FJ Eppling, FC Erne, JP Ernenwein, P Extermann, M Fabre, R Faccini, S Falciano, A Favara, J Fay, M Felcini, C Furetta, T Ferguson, D Fernandez, F Ferroni, H Fesefeldt, E Fiandrini, JH Field, F Filthaut, PH Fisher, G Forconi, L Fredj, K Freudenreich, Y Galaktionov, SN Ganguli, SS Gau, S Gentile, J Gerald, N Gheordanescu, S Giagu, S Goldfarb, J Goldstein, ZF Gong, A Gougas, G Gratta, MW Gruenewald, VK Gupta, A Gurtu, LJ Gutay, K Hangarter, B Hartmann, A Hasan, T Hebbeker, A Herve, WC vanHoek, H Hofer, H Hoorani, SR Hou, G Hu, MM Ilyas, V Innocente, H Janssen, BN Jin, LW Jones, P deJong, I JosaMutuberria, A Kasser, RA Khan, Y Kamyshkov, P Kapinos, JS Kapustinsky, Y Karyotakis, M Kaur, MN KienzleFocacci, D Kim, JK Kim, SC Kim, YG Kim, WW Kinnison, A Kirkby, D Kirkby, J Kirkby, D Kiss, W Kittel, A Klimentov, AC Konig, I Korolko, V Koutsenko, A Koulbardis, RW Kraemer, T Kramer, W Krenz, H Kuijten, A Kunin, PL deGuevara, G Landi, C Lapoint, K LassilaPerini, P Laurikainen, M Lebeau, A Lebedev, P Lebrun, P Lecomte, P Lecoq, P LeCoultre, JS Lee, KY Lee, C Leggett, JM LeGoff, R Leiste, M Lenti, E Leonardi, P Levtchenko, C Li, E Lieb, WT Lin, FL Linde, L Lista, ZA Liu, W Lohmann, E Longo, W Lu, YS Lu, K Lubelsmeyer, C Luci, D Luckey, L Ludovici, L Luminari, W Lustermann, WG Ma, A Macchiolo, M Maity, G Majumder, L Malgeri, A Malinin, C Mana, S Mangla, P Marchesini, A Marin, JP Martin, F Marzano, GGG Massaro, K Mazumdar, D McNally, S Mele, L Merola, M Meschini, WJ Metzger, M vonderMey, Y Mi, A Mihul, AJW vanMil, G Mirabelli, J Mnich, B Monteleoni, R Moore, S Morganti, R Mount, S Muller, F Muheim, E Nagy, S Nahn, M Napolitano, F NessiTedaldi, H Newman, A Nippe, H Nowak, G Organtini, R Ostonen, D Pandoulas, S Paoletti, P Paolucci, HK Park, G Pascale, C Passaleva, S Patricelli, T Paul, M Pauluzzi, C Pauss, F Pauss, D Peach, YJ Pei, S Pensotti, D PerretGallix, S Petrak, A Pevsner, D Piccolo, M Pieri, JC Pinto, PA Piroue, E Pistolesi, V Plyaskin, M Pohl, V Pojidaev, H Postema, N Produit, R Raghavan, G RahalCallot, PG Rancoita, M Rattaggi, G Raven, P Razis, K Read, D Ren, M Rescigno, S Reucroft, T vanRhee, S Riemann, BC Riemers, K Riles, O Rind, S Ro, A Robohm, J Rodin, FJ Rodriguez, BP Roe, S Rohner, L Romero, S RosierLees, P Rosselet, W vanRossum, S Roth, JA Rubio, H Rykaczewski, J Salicio, E Sanchez, A Santocchia, ME Sarakinos, S Sarkar, M Sassowsky, G Sauvage, M Schneegans, B Schoeneich, N Scholz, H Schopper, DJ Schotanus, J Schwenke, G Schwering, C Sciacca, D Sciarrino, JC Sens, L Servoli, S Shevchenko, N Shivarov, V Shoutko, J Shukla, E Shumilov, T Siedenburg, D Son, A Sopczak, V Soulimov, B Smith, P Spillantini, M Steuer, DP Stickland, F Sticozzi, H Stone, B Stoyanov, A Straessner, K Strauch, K Sudhakar, G Sultanov, LZ Sun, GF Susinno, H Suter, JD Swain, XW Tang, L Tauscher, L Taylor, SCC Ting, SM Ting, F Tonisch, M Tonutti, SC Tonwar, J Toth, A Tsaregorodtsev, C Tully, H Tuchscherer, KL Tung, J Ulbricht, U Uwer, E Valente, RT VandeWalle, G Vesztergombi, I Vetlitsky, G Viertel, M Vivargent, R Volkert, H Vogel, H Vogt, I Vorobiev, AA Vorobyov, AA Vorobyov, A Vorvolakos, M Wadhwa, W Wallraff, JC Wang, XL Wang, YF Wang, ZM Wang, A Weber, F Wittgenstein, SX Wu, S Wynhoff, J Xu, ZZ Xu, BZ Yang, CG Yang, XY Yao, JB Ye, SC Yeh, JM You, C Zaccardelli, A Zalite, P Zemp, Y Zeng, Z Zhang, ZP Zhang, B Zhou, Y Zhou, GY Zhu, RY Zhu, A Zichichi


Measurement of the Michel parameters and the average tau neutrino helicity from tau decays in e(+)e(-)->tau(+)tau(-)

PHYSICS LETTERS B 377 (1996) 313-324

M Acciarri, A Adam, O Adriani, M AguilarBenitez, S Ahlen, B Alpat, J Alcaraz, G Alemanni, J Allaby, A Aloisio, G Alverson, MG Alviggi, G Ambrosi, H Anderhub, VP Andreev, T Angelescu, D Antreasyan, A Arefiev, T Azemoon, T Aziz, P Bagnaia, L Baksay, RC Ball, S Banerjee, K Banicz, R Barillere, L Barone, P Bartalini, A Baschirotto, M Basile, R Battiston, A Bay, F Becattini, U Becker, F Behner, J Berdugo, P Berges, B Bertucci, BL Betev, M Biasini, A Biland, GM Bilei, JJ Blaising, SC Blyth, GJ Bobbink, R Bock, A Bohm, B Borgia, A Boucham, D Bourilkov, M Bourquin, D Boutigny, E Brambilla, JG Branson, V Brigljevic, IC Brock, A Buijs, A Bujak, JD Burger, WJ Burger, J Busenitz, A Buytenhuijs, XD Cai, M Campanelli, M Capell, GC Romeo, M Caria, G Carlino, AM Cartacci, J Casaus, G Castellini, R Castello, F Cavallari, N Cavallo, C Cecchi, M Cerrada, F Cesaroni, M Chamizo, A Chan, YH Chang, UK Chaturvedi, M Chemarin, A Chen, G Chen, GM Chen, HF Chen, HS Chen, M Chen, G Chiefari, CY Chien, MT Choi, L Cifarelli, F Cindolo, C Civinini, I Clare, R Clare, HO Cohn, G Coignet, AP Colijn, N Colino, V Commichau, S Costantini, F Cotorobai, B delaCruz, TS Dai, R DAlessandro, R deAsmundis, H DeBoeck, A Degre, K Deiters, P Denes, F DeNotaristefani, D DiBitonto, M Diemoz, D vanDierendonck, F DiLodovico, C Dionisi, M Dittmar, A Dominguez, A Doria, I Dorne, MT Dova, E Drago, D Duchesneau, P Duinker, I Duran, S Dutta, S Easo, Y Efremenko, H ElMamouni, A Engler, FJ Eppling, FC Erne, JP Ernenwein, P Extermann, M Fabre, R Faccini, S Falciano, A Favara, J Fay, M Felcini, C Furetta, T Ferguson, D Fernandez, F Ferroni, H Fesefeldt, E Fiandrini, JH Field, F Filthaut, PH Fisher, G Forconi, L Fredj, K Freudenreich, Y Galaktionov, SN Ganguli, SS Gau, S Gentile, J Gerald, N Gheordanescu, S Giagu, S Goldfarb, J Goldstein, ZF Gong, A Gougas, G Gratta, MW Gruenewald, VK Gupta, A Gurtu, LJ Gutay, K Hangarter, B Hartmann, A Hasan, T Hebbeker, A Herve, WC vanHoek, H Hofer, H Hoorani, SR Hou, G Hu, MM Ilyas, V Innocente, H Janssen, BN Jin, LW Jones, P deJong, I JosaMutuberria, A Kasser, RA Khan, Y Kamyshkov, P Kapinos, JS Kapustinsky, Y Karyotakis, M Kaur, MN KienzleFocacci, D Kim, JK Kim, SC Kim, YG Kim, WW Kinnison, A Kirkby, D Kirkby, J Kirkby, W Kittel, A Klimentov, AC Konig, A Kongeter, I Korolko, V Koutsenko, A Koulbardis, RW Kraemer, T Kramer, W Krenz, H Kuijten, A Kunin, PL deGuevara, G Landi, C Lapoint, K LassilaPerini, M Lebeau, A Lebedev, P Lebrun, P Lecomte, P LeCoultre, JS Lee, KY Lee, C Leggett, JM LeGoff, R Leiste, M Lenti, E Leonardi, P Levtchenko, C Li, E Lieb, WT Lin, FL Linde, B Lindemann, L Lista, ZA Ziu, W Lohmann, E Longo, W Lu, YS Lu, K Lubelsmeyer, C Luci, D Luckey, L Ludovici, L Luminari, W Lustermann, WG Ma, A Macchiolo, M Maity, G Majumder, L Malgeri, A Malinin, C Mana, S Mangla, P Marchesini, A Marin, JP Martin, F Marzano, GGG Massaro, K Mazumdar, D McNally, S Mele, L Merola, M Meschini, WJ Metzger, M vonderMey, Y Mi, A Mihul, AJW vanMil, G Mirabelli, J Mnich, M Moller, B Monteleoni, R Moore, S Morganti, R Mount, S Muller, F Muheim, E Nagy, S Nahn, M Napolitano, F NessiTedaldi, H Newman, A Nippe, H Nowak, G Organtini, R Ostonen, D Pandoulas, S Paoletti, P Paolucci, HK Park, G Pascale, G Passaleva, S Patricelli, T Paul, M Pauluzzi, C Paus, F Pauss, D Peach, YJ Pei, S Pensotti, D PerretGallix, S Petrak, A Pevsner, D Piccolo, M Pieri, JC Pinto, PA Piroue, E Pistolesi, V Plyaskin, M Pohl, V Pojidaev, H Postema, N Produit, R Raghavan, G RahalCallot, PG Rancoita, M Rattaggi, G Raven, P Razis, K Read, D Ren, M Rescigno, S Reucroft, T vanRhee, A Ricker, S Riemann, BC Riemers, K Riles, O Rind, S Ro, A Robohm, J Rodin, FJ Rodriguez, BP Roe, S Rohner, L Romero, S RosierLees, P Rosselet, V vanRossum, S Roth, JA Rubio, H Rykaczewski, J Salicio, E Sanchez, A Santocchia, ME Sarakinos, S Sarkar, M Sassowsky, G Sauvage, C Schafer, V Schegelsky, S SchmidtKaerst, D Schmitz, P Schmitz, M Schneegans, B Schoeneich, N Scholz, H Schopper, DJ Schotanus, R Schulte, K Schultze, J Schwenke, G Schwering, C Sciacca, D Sciarrino, JC Sens, L Servoli, S Shevchenko, N Shivarov, V Shoutko, J Shukla, E Shumilov, T Siedenburg, D Son, A Sopczak, V Soulimov, B Smith, P Spillantini, M Steuer, DP Stickland, F Sticozzi, H Stone, B Stoyanov, A Straessner, K Strauch, K Sudhakar, G Sultanov, LZ Sun, GF Susinno, H Suter, JD Swain, XW Tang, L Taucher, L Taylor, SCC Ting, SM Ting, O Toker, F Tonisch, M Tonutti, SC Tonwar, J Toth, A Tsaregorodtsev, C Tully, H Tuchscherer, KL Tung, J Ulbricht, U Uwer, E Valente, RT VandeWalle, I Vetlitsky, G Viertel, M Vivargent, R Volkert, H Vogel, H Vogt, I Vorobiev, AA Vorobyov, AA Vorobyov, A Vorvolakos, M Wadhwa, W Wallraff, JC Wang, XL Wang, YF Wang, ZM Wang, A Weber, F Wittgenstein, SX Wu, S Wynhoff, J Xu, ZZ Xu, BZ Yang, CG Yang, XY Yao, JB Ye, SC Yeh, JM You, C Zaccardelli, A Zalite, P Zemp, Y Zeng, Z Zhang, ZP Zhang, B Zhou, Y Zhou, GY Zhu, RY Zhu, A Zichichi


Measurement of the decay rate of the radiative K-e3(0) decay

369 (1996) 69-76

F Leber, T Beier, H Blumer, D Coward, K Kleinknecht, B Renk, HG Sander, F Scheerer, J Scheidt, J Staeck, A Wagner, GD Barr, P Buchholz, N Doble, L Gatignon, P Grafstrom, R Hagelberg, H Wahl, KJ Peach, E Auge, D Fournier, L IconomidouFayard, O Perdereau, AC Schaffer, L Serin, P Calafiura, R Carosi, R Casali, I Mannelli, VM Marzulli, A Nappi, GM Pierazzini


Measurement of the branching fraction B(B<sup>+</sup><inf>u</inf>→J/ψπ<sup>+</sup>) and Search for B<sup>+</sup><inf>c</inf>→J/ψπ<sup>+</sup>

Physical Review Letters 77 (1996) 5176-5181

F Abe, H Akimoto, A Akopian, MG Albrow, SR Amendolia, D Amidei, J Antos, C Anway-Wiese, S Aota, G Apollinari, T Asakawa, W Ashmanskas, M Atac, F Azfar, P Azzi-Bacchetta, N Bacchetta, W Badgett, S Bagdasarov, MW Bailey, J Bao, P de Barbaro, A Barbaro-Galtieri, VE Barnes, BA Barnett, E Barzi, G Bauer, T Baumann, F Bedeschi, S Behrends, S Belforte, G Bellettini, J Bellinger, D Benjamin, J Benlloch, J Bensinger, D Benton, A Beretvas, JP Berge, J Berryhill, S Bertolucci, B Bevensee, A Bhatti, K Biery, M Binkley, D Bisello, RE Blair, C Blocker, A Bodek, W Bokhari, V Bolognesi, G Bolla, D Bortoletto, J Bondreau, L Breccia, C Bromberg, N Bruner, E Buckley-Geer, HS Budd, K Burkett, G Busetto, A Byon-Wagner, KL Byrum, J Cammerata, C Campagnari, M Campbell, A Caner, W Carithers, D Carlsmith, A Castro, D Cauz, Y Cen, F Cervelli, PS Chang, PT Chang, HY Chao, J Chapman, MT Cheng, G Chiarelli, T Chikamatsu, CN Chiou, L Christofek, S Cihangir, AG Clark, M Cobal, E Cocca, M Contreras, J Conway, J Cooper, M Cordelli, C Couyoumtzelis, D Crane, D Cronin-Hennessy, R Culbertson, T Daniels, F De Jongh, S Delchamps, S Dell’agnello, M Dell’orso, R Demina

We report on a measurement of the branching fraction of the Cabibbo-suppressed decay B+u→J/ψπ+, where J/ψJ/ψμ+μ-. The data were collected by the Collider Detector at Fermilab during 1992–1995 and correspond to an integrated luminosity of 110pb-1 in pp collisions at √s=1.8TeV. A signal of 28+10-9 events is observed and we determine the ratio of branching fractions B(B+u→J/ψπ+)/B(B+u→J/ψK+) to be [5.0+1.9-1.7(stat)±0.1(syst)]%. Using the world average value for B(B+u→J/ψπ+), we calculate the branching fraction B(B+u→J/ψπ+) to be (5.0+2.1-1.9)×10-5. We also search for the decay B+c→J/ψπ+ and report a 95% confidence level limit on σ(B+c)B+c→J/ψπ+/σ(B+u)B(B+u→J/ψK+) as a function of the B+c lifetime. © 1996 The American Physical Society.


The SOUDAN 2 detector: The design and construction of the tracking calorimeter modules

Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 376 (1996) 36-48

I Ambats, DS Ayres, LJ Balka, GD Barr, WL Barrett, D Benjamine, C Bode, PM Border, CB Brooks, JH Cobb, DJA Cockerill, K Coover, RJ Cotton, H Courant, BB Dahlin, U DasGupta, JW Dawson, DM Demuth, VW Edwards, B Ewen, TH Fields, C Garcia-Garcia, HM Gallagher, RH Giles, GL Giller, MC Goodman, RN Gray, S Heppelmann, N Hill, JH Hoftiezer, DJ Jankowski, K Johns, T Joyce, T Kafka, SMS Kasahara, LM Kirby-Gallagher, J Kochocki, W Leeson, PJ Litchfield, NP Longley, FV Lopez, MJ Lowe, WA Mann, ML Marshak, EN May, D Maxam, L McMaster, R Milburn, WH Miller, CP Minor, N Mondal, L Mualem, A Napier, EM Nelson, R Nickson, W Oliver, GF Pearce, DH Perkins, EA Peterson, LE Price, DM Roback, DB Rosen, K Ruddick, B Saitta, DJ Schmid, J Schlereth, J Schneps, MH Schub, RV Seidlein, PD Shield, MA Shupe, S Spear, A Stassinakis, N Sundaralingam, MA Thomson, JL Thron, V Vassiliev

SOUDAN 2 is a 960-ton tracking calorimeter which has been constructed to search for nucleon decay and other phenomena. The full detector consists of 224 calorimeter modules each weighing 4.3 tons. The design and construction of the modules are described. The modules consist of finely segmented iron instrumented with 1 m long drift tubes of 15 mm internal diameter. The tubes enable three spatial coordinates and dE/dx to be recorded for charged particles traversing the tubes.


Measurement of hadron and lepton-pair production at 130 GeV<root s<140 GeV at LEP

PHYSICS LETTERS B 370 (1996) 195-210

M Acciarri, A Adam, O Adriani, M AguilarBenitez, S Ahlen, B Alpat, J Alcaraz, J Allaby, A Aloisio, G Alverson, MG Alviggi, G Ambrosi, H Anderhub, VP Andreev, T Angelescu, D Antreasyan, A Arefiev, T Azemoon, T Aziz, P Bagnaia, L Baksay, RC Ball, S Banerjee, K Banicz, R Barillere, L Barone, P Bartalini, A Baschirotto, M Basile, R Battiston, A Bay, F Becattini, U Becker, F Behner, GL Bencze, J Berdugo, P Berges, B Bertucci, BL Betev, M Biasini, A Biland, GM Bilei, JJ Blaising, SC Blyth, GJ Bobbink, R Bock, A Bohm, B Borgia, A Boucham, D Bourilkov, M Bourquin, D Boutigny, E Brambilla, JG Branson, V Brigljevic, IC Brock, A Buijs, A Bujak, JD Burger, JW Burger, C Burgos, J Busenitz, A Buytenhuijs, XD Cai, M Campanelli, M Capell, GC Romero, M Caria, G Carlino, AM Cartacci, J Casaus, G Castellini, R Castello, F Cavallari, N Cavallo, C Cecchi, M Cerrada, F Cesaroni, M Chamizo, A Chan, YH Chang, UK Chaturvedi, M Chemarin, A Chen, C Chen, G Chen, GM Chen, HF Chen, HS Chen, X Cherau, G Chiefari, CY Chien, MT Choi, L Cifarelli, F Cindolo, C Civinini, I Clare, R Clare, TE Coan, HO Cohn, G Coignet, AP Colijn, N Colino, V Commichau, S Costantini, F Cotorobai, B delaCruz, TS Dai, R DAlessandro, R deAsmundis, H DeBoeck, A Degre, K Deiters, E Denes, P Denes, F DeNotaristefani, D DiBitonto, M Diemoz, D vanDierendonck, F DiLodovico, C Dionisi, M Dittmar, A Dominguez, A Doria, I Dorne, MT Dova, E Drago, D Duchesneau, P Duinker, I Duran, S Dutta, S Easo, Y Efremenko, H ElMamouni, A Engler, FJ Eppling, FC Erne, JP Ernenwein, P Extermann, R Fabbretti, M Fabre, R Faccini, S Falciano, A Favara, J Fay, M Felcini, T Ferguson, D Fernandez, G Fernandez, F Ferroni, H Fesefeldt, E Fiandrini, JH Field, F Filthaut, PH Fisher, G Forconi, L Fredj, K Freudenreich, M Gailloud, Y Galaktionov, SN Ganguli, P GarciaAbia, SS Gau, S Gentile, J Gerald, N Gheordanescu, S Giagu, S Goldfarb, J Goldstein, ZF Gong, E Gonzalez, A Gougas, D Goujon, C Gratta, MW Gruenewald, VK Gupta, A Gurtu, HR Gustafson, LJ Gutay, K Hangarter, B Hartmann, A Hasan, JT He, T Hebbeker, A Herve, WC vanHoek, H Hofer, H Hoorani, SR Hou, G Hu, MM Ilyas, V Innocente, H Janssen, BN Jin, LW Jones, P deJong, I JosaMutuberria, A Kasser, RA Khan, Y Kamyshkov, P Kapinos, JS Kapustinsky, Y Karyotakis, M Kaur, MN KienzleFocacci, D Kim, JK Kim, SC Kim, JG Kim, WW Kinnison, A Kirkby, J Kirkby, W Kittel, A Klimentov, AC Konig, E Koffeman, A Kongeter, V Koutsendo, A Koulbardis, RW Kraemer, T Kramer, W Krenz, H Kuijten, A Kunin, PL deGuevara, G Landi, C Lapoint, K LassilaPerini, P Laurikainen, M Lebeau, A Lebedev, P Lebrun, P Lecomte, P Lecoq, P LeCoultre, J Lee, KY Lee, C Leggett, JM LeGoff, R Leiste, M Lenti, E Leonardi, P Levtchenko, C Li, E Lieb, WT Lin, FL Linde, B Lindemann, L Lista, ZA Liu, W Lohmann, E Longo, W Lu, YS Lu, K Lubelsmeyer, C Luci, D Luckey, L Ludovici, L Luminari, W Lustermann, WG Ma, A Macchiolo, M Maity, G Majumder, L Malgeri, A Malinin, C Mana, S Mangla, M Maolinbay, P Marchesini, A Marin, JP Martin, F Marzano, GGG Massaro, K Mazumdar, D McNally, RR McNeil, S Mele, L Merola, M Meschini, WJ Metzger, M vonderMey, Y Mi, A Mihul, AJW vanMil, G Mirabelli, J Mnich, M Moller, B Monteleoni, R Moore, S Morganti, R Mount, S Muller, F Muheim, E Nagy, S Nahn, M Napolitano, F NessiTedaldi, H Newman, H Newman, A Nippe, H Nowak, G Organtini, R Ostonen, D Pandoulas, S Paoletti, P Paolucci, HK Parkak, G Pascale, G Passaleva, S Patricelli, T Paul, M Pauluzzi, C Paus, F Pauss, YJ Pei, S Pensotti, D Perret-Gallix, S Petrak, Pevsner, D Piccolo, M Pieri, JC Pinto, PA Piroue, E Pistolesi, V Plyaskin, M Pohl, V Pojidaev, H Postema, N Produit, R Raghavan, G Rahal-Callot, PG Rancoita, M Rattaggi, G Raven, P Razis, K Read, M Redaelli, D Ren, M Rescigno, S Reucroft, A Ricker, S Riemann, BC Riemers, K Riles, O Rind, S Ro, A Robohm, J Rodin, FJ Rodriguez, BP Roe, S Rohner, L Romero, S Rosier-Lees, P Rosselet, W van Rossum, S Roth, JA Rubio, H Rykaczewski, J Salicio, JM Salicio, E Sanchez, A Santocchia, ME Sarakinos, S Sarkar, M Sassowsky, C Schafer, V Schegelsky, S Schmidt-Kaerst, D Schmitz, P Schmitz, M Schneegans, B Schoeneich, N Scholz, H Schopper, DJ Schotanus, R Schulte, K Schultze, J Schwenke, G Schwering, C Sciacca, PG Seiler, JC Sens, L Servoli, S Shevchenko, N Shivarov, V Shoutko, J Shukla, E Shumilov, T Shumilov, D Son, A Sopczak, V Soulimov, B Smith, P Spillantini, M Steuer, DP Stickland, F Sticozzi, H Stone, B Stoyanov, A Straessner, K Strauch, K Sudhakar, G Sultanov, LZ Sun, GF Susinno, H Suter, JD Swain, XW Tang, L Tauscher, L Taylor, SCC Ting, SM Ting, O Taker, F Tonisch, M Tonutti, SC Tonwar, J Toth, A Tsaregorodtsev, C Tully, H Tuchscherer, KL Tung, J Ulbricht, L Urban, U Uwer, E Valente, RT Van de Walle, I Vetlitsky, G Viertel, M Vivargent, R Volkert, H Vogel, H Vogt, I Vorobiev, AA Vorobyov, AA Vorobyov, L Vuilleumier, M Wadhwa, W Wallraff, JC Wang, XL Wang, YF Wang, ZM Wang, A Weber, R Weill, C Willmott, F Wittgenstein, SX Wu, S Wynhoff, J Xu, ZZ Xu, BZ Yang, CG Yang, XY Yao, JB Ye, SC Yeh, JM You, C Zaccardelli, A Zalite, P Zemp, JY Zeng, Y Zeng, Z Zhang, ZP Zhang, B Zhou, GJ Zhou, Y Zhou, GY Zhu, RY Zhu, A Zichichi, BCC van der Zwaan


Search for new particles in hadronic events with isolated photons

PHYSICS LETTERS B 388 (1996) 409-418

M Acciarri, A Adam, O Adriani, M AguilarBenitez, S Ahlen, B Alpat, J Alcaraz, G Alemanni, J Allaby, A Aloisio, G Alverson, MG Alviggi, G Ambrosi, H Anderhub, VP Andreev, T Angelescu, D Antreasyan, A Arefiev, T Azemoon, T Aziz, P Bagnaia, L Baksay, RC Ball, S Banerjee, K Banicz, R Barillere, L Barone, P Bartalini, A Baschirotto, M Basile, R Battiston, A Bay, F Becattini, U Becker, F Behner, J Berdugo, P Berges, B Bertucci, BL Betev, M Biasini, A Biland, GM Bilei, JJ Blaising, SC Blyth, GJ Bobbink, R Bock, A Bohm, B Borgia, A Boucham, D Bourilkov, M Bourquin, D Boutigny, E Brambilla, JG Branson, V Brigljevic, IC Brocka, A Buijs, A Bujak, JD Burger, WJ Burger, J Busenitz, A Buytenhuijs, XD Cai, M Campanelli, M Capell, GC Romeo, M Caria, G Carlino, AM Cartacci, J Casaus, G Castellini, R Castello, F Cavallari, N Cavallo, C Cecchi, M Cerrada, F Cesaroni, M Chamizo, A Chan, YH Chang, UK Chaturvedi, M Chemarin, A Chen, G Chen, GM Chen, HF Chen, HS Chen, M Chen, G Chiefari, CY Chien, MT Choi, L Cifarelli, F Cindolo, C Civinini, I Clare, R Clare, HO Cohn, G Coignet, AP Colijn, N Colino, S Costantini, F Cotorobai, B delaCruz, A Csilling, TS Dai, R DAlessandro, R deAsmundis, H DeBoeck, A Degre, K Deiters, P Denes, F DeNotaristefani, D DiBitonto, M Diemoz, D vanDierendonck, F DiLodovico, C Dionisi, M Dittmar, A Dominguez, A Doria, I Dorne, MT Dova, E Drago, D Duchesneau, P Duinker, I Duran, S Dutta, S Easo, Y Efremenko, H ElMamouni, A Engler, FJ Eppling, FC Erne, JP Ernenwein, P Extermann, M Fabre, R Faccini, S Falciano, A Favara, J Fay, M Felcini, C Furetta, T Ferguson, D Fernandez, F Ferroni, H Fesefeldt, E Fiandrini, JH Field, F Filthaut, PH Fisher, G Forconi, L Fredj, K Freudenreich, Y Galaktionov, SN Ganguli, SS Gau, S Gentile, J Gerald, N Gheordanescu, S Giagu, S Goldfarb, J Goldstein, ZF Gong, A Gougas, G Gratta, MW Gruenewald, VK Gupta, A Gurtu, LJ Gutay, K Hangarter, B Hartmann, A Hasan, T Hebbeker, A Herve, WC vanHoek, H Hofer, H Hoorani, SR Hou, G Hu, MM Ilyas, V Innocente, H Janssen, BN Jin, LW Jones, P deJong, I JosaMutuberria, A Kasser, RA Khan, Y Kamyshkov, P Kapinos, JS Kapustinsky, Y Karyotakis, M Kaur, MN KienzleFocacci, D Kim, JK Kim, SC Kim, YG Kim, WW Kinnison, A Kirkby, D Kirkby, J Kirkby, D Kiss, W Kittel, A Klimentov, AC Konig, I Korolko, V Koustenko, A Koulbardis, RW Kraemer, T Kramer, W Krenz, H Kuijten, A Kunin, PL deGuevara, G Landi, C Lapoint, K LassilaPerini, P Laurikainen, M Lebeau, A Lebedev, P Lebrun, P Lecomte, P Lecoq, P LeCoultre, JS Lee, KY Lee, C Leggett, JM LeGoff, R Leiste, M Lenti, E Leonardi, P Levtchenko, C Li, E Lieb, WT Lin, FL Linde, L Lista, ZA Liu, W Lohmann, E Longo, W Lu, YS Lu, K Lubelsmeyer, C Luci, D Luckey, L Ludovici, L Luminari, W Lustermann, WG Ma, A Macchiolo, M Maity, G Majumder, L Malgeri, A Malinin, C Mana, S Mangla, P Marchesini, A Marin, JP Martin, F Marzano, GGG Massaro, K Mazumdar, D McNally, S Mele, L Merola, M Meschini, WJ Metzger, M vonderMey, Y Mi, A Mihul, AJW vanMil, G Mirabelli, J Mnich, B Monteleoni, R Moore, S Morganti, R Mount, S Muller, F Muheim, E Nagy, S Nahn, M Napolitano, F NessiTedaldi, H Newman, A Nippe, H Nowak, G Organtini, R Ostonen, D Pandoulas, S Paoletti, P Paolucci, HK Park, G Pascale, G Passaleva, S Patricelli, T Paul, M Pauluzzi, C Paus, F Pauss, D Peach, YJ Pei, S Pensotti, D PerretGallix, S Patrak, A Pevsner, D Piccolo, M Pieri, JC Pinto, PA Piroue, E Pistolesi, V Plyaskin, M Pohl, V Pojidaev, H Postema, N Produit, R Raghavan, G RahalCallot, PG Rancoita, M Rattaggi, G Raven, P Razis, K Read, D Ren, M Rescigno, S Reucroft, T vanRhee, S Riemann, BC Riemers, K Riles, O Rind, S Ro, A Robohm, J Rodin, FJ Rodriguez, BP Roe, S Rohner, L Romero, S RosierLees, P Rosselet, W vanRossum, S Roth, JA Rubio, H Rykaczewski, J Salicio, E Sanchez, A Santocchia, ME Sarakinos, S Sarkar, M Sassowsky, G Sauvage, C Schafer, V Schegelsky, S SchmidtKaerst, D Schmitz, P Schmitz, M Schneegans, B Schoeneich, N Scholz, H Schopper, DJ Schotanus, J Schwenke, G Schwering, C Sciacca, D Sciarrino, JC Sens, L Servoli, S Shevchenko, N Shivarov, V Shoutko, J Shukla, E Shumilov, T Siedenburg, D Son, A Sopczak, V Soulimov, B Smith, P Spillantini, M Steuer, DP Stickland, F Sticozzi, H Stone, B Stoyanov, A Straessner, K Strauch, K Sudhakar, G Sultanov, LZ Sun, GF Susinno, H Suter, JD Swain, XW Tang, L Tauscher, L Taylor, SCC Ting, SM Ting, F Tonisch, M Tonutti, SC Tonwar, J Toth, A Tsaregorodtsev, C Tully, H Tuchscherer, KL Tung, J Ulbricht, U Uwer, E Valente, RT VandeWalle, G Vesztergombi, I Vetlitsky, G Viertel, M Vivargent, R Volkert, H Vogel, H Vogt, I Vorobiev, AA Vorobyov, AA Vorobyov, A Vorvolakos, M Wadhwa, W Wallraff, JC Wang, XL Wang, YF Wang, ZM Wang, A Weber, F Wittgenstein, SX Wu, S Wynhoff, J Xu, ZZ Xu, BZ Yang, CG Yang, XY Yao, JB Ye, SC Yeh, JM You, C Zaccardelli, A Zalite, P Zemp, Y Zeng, Z Zhang, ZP Zhang, B Zhou, Y Zhou, GY Zhu, RY Zhu, A Zichichi


Observation of multiple hard photon final states at √S = 130-140 GeV at LEP

Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 384 (1996) 323-332

We have studied the process e+e- → ny (n ≥ 2) at an average center-of-mass energy of 133 GeV using the L3 detector at LEP. For an integrated luminosity of 4.95 pb-1 we find one γγγγ(γ) final state with only hard photons. The rates of both γγγ and γγ events are consistent with QED expectations. The cross section of the reaction e+e- → γγ(γ) in the polar range 16° < θγ < 164° is measured to be 22.6 ± 2.2 pb. Decays into photons of narrow scalar resonances with masses between 90 and 130 GeV are not observed. The observation of the event with four energetic photons is consistent with QED although the kinematic configuration of the photons is atypical.


Search for supersymmetric particles at 130 GeV<root s<140 GeV at LEP

PHYSICS LETTERS B 377 (1996) 289-303

M Acciarri, A Adam, O Adriani, M AguilarBenitez, S Ahlen, B Alpat, J Alcaraz, G Alemanni, J Allaby, A Aloisio, G Alverson, MG Alviggi, G Ambrosi, H Anderhub, VP Andreev, T Angelescu, D Antreasyan, A Arefiev, T Azemoon, T Aziz, P Bagnaia, L Baksay, RC Ball, S Banerjee, K Banicz, R Barillere, L Barone, P Bartalini, A Baschirotto, M Basile, R Battiston, A Bay, F Becattini, U Becker, F Behner, J Berdugo, P Berges, B Bertucci, BL Betev, M Biasini, A Biland, GM Bilei, JJ Blaising, SC Blyth, GJ Bobbink, R Bock, A Bohm, B Borgia, A Boucham, D Bourilkov, M Bourquin, E Brambilla, JG Branson, V Brigljevic, IC Brock, A Buijs, A Bujak, JD Burger, WJ Burger, J Busenitz, A Buytenhuijs, XD Cai, M Campanelli, M Capell, GC Romeo, M Caria, G Carlino, AM Cartacci, J Casaus, G Castellini, R Castello, F Cavallari, N Cavallo, C Cecchi, M Cerrada, F Cesaroni, M Chamizo, A Chan, YH Chang, UK Chaturvedi, M Chemarin, A Chen, C Chen, G Chen, GM Chen, HF Chen, HS Chen, X Chereau, G Chiefari, CY Chien, MT Choi, L Cifarelli, F Cindolo, C Civinini, I Clare, R Clare, HO Cohn, G Coignet, AP Colijn, N Colino, V Commichau, S Costantini, F Cotorobai, B delaCruz, TS Dai, D DAlessandro, R deAsmundis, H DeBoeck, A Degre, K DEiters, P Denes, F Denotaristefani, D DiBitonto, M Diemoz, D vanDierendonck, F DiLodovico, C Dionisi, M Dittmar, A Dominguez, A Doria, I Dorne, MT Dova, E Drago, D Duchesneau, P Duinker, I Duran, S Dutta, S Easo, Y Efremenko, H ElMamouni, A Engler, FJ Eppling, FC Erne, JP Ernenwein, P Extermann, M Fabre, R Faccini, S Falciano, A Favara, J Fay, M Felcini, T Ferguson, D Fernandez, F Ferroni, H Fesefeldt, E Fiandrini, JH Field, F Filthaut, PH Fisher, G Forconi, L Fredj, K Freudenreich, Y Galaktionov, SN Ganguli, SS Gau, S Gentile, J Gerald, N Gheordanescu, S Giagu, S Goldfarb, J Goldstein, ZF Gong, A Gougas, G Gratta, MW Gruenewald, VK Gupta, A Gurtu, LJ Gutay, K Hangarter, B Hartmann, A Hasan, JT He, T Hebbeker, A Herve, WC vanHoek, H Hofer, H Hoorani, SR Hou, G Hu, MM Ilyas, V Innocente, H Janssen, BN Jin, LW Jones, P deJong, I JosaMutuberria, A Kasser, RA Khan, Y Kamyshkov, P Kapinos, JS Kapustinsky, Y Karyotakis, M Kaur, MN KienzleFocacci, D Kim, JK Kim, SC Kim, YG Kim, WW Kinnison, A Kirkby, D Kirkby, J Kirkby, W Kittel, A Klimentov, AC Konig, A Kongeter, I Korolko, V Koutsenko, A Koulbardis, RW Kraemer, T Kramer, W Krenz, H Kuijten, A Kunin, PL deGuevara, G Landi, C Lapoint, K LassilaPerini, M Lebeau, A Lebedev, P Lebrun, P Lecomte, P Lecoq, P LeCoultre, JS Lee, KY Lee, JM LeGoff, R Leiste, M Lenti, E Leonardi, P Levtchenko, C Li, E Lieb, WT Lin, FL Linde, B Lindemann, L Lista, ZA Liu, W Lohmann, E Longo, W Lu, YS Lu, K Lubelsmeyer, C Luci, D Luckey, L Ludovici, L Luminari, W Lustermann, WG Ma, A Macchiolo, M Maity, G Majumder, L Malgeri, A Malinin, C Mana, S Mangla, P Marchesini, A Marin, JP Martin, F Marzano, GGG Massaro, K Mazumdar, D McNally, RR McNeil, S Mele, L Merola, M Meschini, WJ Metzger, M vonderMey, Y Mi, A Mihul, AJW vanMil, G Mirabelli, J Mnich, M Moller, B Monteleoni, R MOore, S Morganti, R Mount, S Muller, F Mulheim, E Nagy, S Nahn, M Napolitano, F NessiTedaldi, H Newman, A Nippe, H Nowak, G Organtini, R Ostonen, D Pandoulas, S Paoletti, P Paolucci, HK Park, G Pascale, G Passaleva, S Patricelli, T Paul, M Pauluzzi, C Paus, F Pauss, D Peach, YJ Pei, S Pensotti, D PerretGallix, S Petrak, A Pevsner, D Piccolo, M Pieri, JC Pinto, PA Piroue, E Pistolesi, V Plyaskin, M Pohl, V Pojidaev, H Postema, N Produit, R Raghavan, G RahalCallot, PG Rancoita, M Rattaggi, G Raven, P Razis, K Read, M Redaelli, D Ren, M Rescigno, S Reucroft, A Ricker, S Riemann, BC Riemers, K Riles, S Ro, A Robohm, J Rodin, FJ Rodriguez, BP Roe, S Rohner, L Romero, S RosierLees, P Rosselet, W vanRossum, S Roth, JA Rubio, H Rykaczewski, J Salicio, E Sanchez, A Santocchia, ME Sarakinos, S Sarkar, M Sassowsky, C Schafer, V Schegelsky, S SchmidtKaerst, D Schmitz, P Schmitz, M Schneegans, B Schoeneich, N Scholz, H Schopper, DJ Schotanus, R Schulte, K Schultze, J Schwenke, G Schwering, C Sciacca, D SCiarrino, JC Sens, L Servoli, S Shevchenko, N Shivarov, V Shoutko, J Shukla, E Shumilov, T Siedenburg, D Son, A Sopczak, B Smith, P Spillantini, M Steuer, DP Strickland, F Sticozzi, H Stone, B Stoyanov, A Straessner, K Strauch, K Sudhakar, G Sultanov, LZ Sun, GF Susinno, H Suter, JD Swain, XW Tang, L Tauscher, L Taylor, SCC Ting, SM Ting, O Toker, F Tonisch, M Tonutti, SC Tonwar, J Toth, A Tsaregorodtsev, C Tully, H Tuchscherer, KL Tung, J Ulbricht, U Uwer, E Valente, RT VandeWAlle, I Vetlitsky, G Viertel, M Vivargent, R Volkert, H Vogel, H Vogt, I Vorobiev, AA Vorobyov, AA Vorobyov, A Vorvolakos, M Wadhwa, W Wallraff, JC Wang, XL Wang, YF Wang, ZM WAng, A Weber, F Wittgenstein, SX Wu, S Wynhoff, J Xu, ZZ Xu, BZ Yang, CG Yang, XY Yao, JB Ye, SC Yeh, JM You, C Zaccardelli, A Zalite, P Zemp, JY Zeng, Y Zeng, Z Zhang, ZP Zhang, B Zhou, GJ Zhou, Y Zhou, GY Zhu, RY Zhu, A Zichichi


Measurement of eta production in two and three-jet events from hadronic Z decays at LEP

PHYSICS LETTERS B 371 (1996) 126-136

M Acciarri, A Adam, O Adriani, M AguilarBenitez, S Ahlen, B Alpat, J Alcaraz, J Allaby, A Aloisio, G Alverson, MG Alviggi, G Ambrosi, H Anderhub, VP Andreev, T Angelescu, D Antreasyan, A Arefiev, T Azemoon, T Aziz, P Bagnaia, L Baksay, RC Ball, S Banerjee, K Banicz, R Barillere, L Barone, P Bartalini, A Baschirotto, M Basile, R Battiston, A Bay, F Becattini, U Becker, F Behner, GL Bencze, J Berdugo, P Berges, B Bertucci, BL Betev, M Biasini, A Biland, GM Bilei, JJ Blaising, GJ Bobbink, R Bock, A Bohm, B Borgia, A Boucham, D Bourilkov, M Bourquin, D Boutigny, E Brambilla, JG Branson, V Brigljevic, IC Brock, A Buijs, A Bujak, JD Burger, WJ Burger, C Burgos, J Busenitz, A Buytenhuijs, XD Cai, M Campanelli, M Capell, GC Romeo, M Caria, G Carlino, AM Cartacci, J Casaus, G Castellini, R Castello, F Cavallari, N Cavallo, C Cecchi, M Cerrada, F Cesaroni, M Chamizo, A Chan, YH Chang, UK Chaturvedi, M Chemarin, A Chen, C Chen, G Chen, GM Chen, HF Chen, HS Chen, M Chen, X Chereau, G Chiefari, CY Chien, MT Choi, L Cifarelli, F Cindolo, HO Cohn, G Coignet, AP Colijn, C Civinini, I Clare, R Clare, TE Coan, N Colino, V Commichau, S Costantini, F Cotorobai, B delaCruz, TS Dai, R DAlessandro, R deAsmundis, H DeBoeck, A Degre, K Deiters, E Denes, P Denes, F DeNotaristefani, D DiBitonto, M Diemoz, D vanDierendonck, F DiLodovico, C Dionisi, M Dittmar, A Dominguez, A Doria, I Dorne, MT Dova, E Drago, D Duchesneau, P Duinker, I Duran, S Dutta, S Easo, Y Efremenko, H ElMamouni, A Engler, FJ Eppling, FC Erne, JP Ernenwein, P Extermann, R Fabbretti, M Fabre, R Faccini, S Falciano, A Favara, J Fay, M Felcini, T Ferguson, D Fernandez, G Fernandez, F Ferroni, H Fesefeldt, E Fiandrini, JH Field, F Filthaut, PH Fisher, G Forconi, L Fredj, K Freudenreich, M Gailloud, Y Galaktionov, SN Ganguli, P GarciaAbia, SS Gau, S Gentile, J Gerald, N Gheordanescu, S Giagu, S Goldfarb, J Goldstein, ZE Gong, E Gonzalez, A Gougas, D Goujon, G Gratta, MW Gruenewald, VK Gupta, A Gurtu, HR Gustafson, LJ Gutay, B Hartmann, A Hasan, JT He, T Hebbeker, A Herve, K Hilgers, WC vanHoek, H Hofer, H Hoorani, SR Hou, G Hu, MM Ilyas, V Innocente, H Janssen, BN Jin, LW Jones, P deJong, I JosaMutuberria, A Kasser, RA Khan, Y Kamyshkov, P Kapinos, JS Kapustinsky, Y Karyotakis, M Kaur, MN KienzleFocacci, D Kim, JK Kim, SC Kim, YG Kim, WW Kinnison, A Kirkby, D Kirkby, J Kirkby, W Kittel, A Klimentov, AC Konig, E Koffeman, O Kornadt, V Koutsenko, A Koulbardis, RW Kraemer, T Kramer, W Krenz, H Kuijten, A Kunin, PL deGuevara, G Landi, C Lapoint, K LassilaPerini, P Laurikainen, M Lebeau, A Lebedev, P Lebrun, P Lecomte, P Lecoq, P LeCoultre, JS Lee, KY Lee, C Leggett, JM LeGoff, R Leiste, M Lenti, E Leonardi, P Levtchenko, C Li, E Lieb, WT Lin, FL Linde, B Lindemann, L Lista, ZA Liu, W Lohmann, E Longo, W Lu, YS Lu, K Lubelsmeyer, C Luci, D Luckey, L Ludovici, L Luminari, W Lustermann, WG Ma, A Macchiolo, M Maity, G Majumder, L Malgeri, A Malinin, C Mana, S Mangla, M Maolinbay, P Marchesini, A Marin, JP Martin, F Marzano, GGG Massaro, K Mazumdar, D McNally, S Mele, L Merola, M Meschini, WJ Metzger, Y Mi, A Mihul, AJW vanMil, G Mirabelli, J Mnich, M Moller, B Monteleoni, R Moore, S Morganti, R Mount, S Muller, F Muheim, E Nagy, S Nahn, M Napolitano, F NessiTedaldi, H Newman, A Nippe, H Nowak, G Organtini, R Ostonen, D Pandoulas, S Paoletti, P Paolucci, G Pascale, G Passaleva, S Patricelli, T Paul, M Pauluzzi, C Paus, F Pauss, YJ Pei, S Pensotti, D PerretGallix, S Petrak, A Pevsner, D Piccolo, M Pieri, JC Pinto, PA Piroue, E Pistolesi, V Plyaskin, M Pohl, V Pojidaev, H Postema, N Produit, R Raghavan, G RahalCallot, PG Rancoita, M Rattaggi, G Raven, P Razis, K Read, M Redaelli, D Ren, M Rescigno, S Reucroft, A Ricker, S Riemann, BC Riemers, K Riles, O Rind, S Ro, A Robohm, J Rodin, FJ Rodriguez, BP Roe, M Rohner, S Rohner, L Romero, S RosierLees, P Rosselet, W vanRossum, S Roth, JA Rubio, H Rykaczewski, J Salicio, JM Salicio, E Sanchez, A Santocchia, ME Sarakinos, S Sarkar, M Sassowsky, G Sauvage, C Schafer, V Schegelsky, D Schmitz, P Schmitz, M Schneegans, B Schoeneich, N Scholz, H Schopper, DJ Schotanus, R Schulte, K Schultze, J Schwenke, G Schwering, C Sciacca, PG Seiler, JC Sens, L Servoli, S Shevchenko, N Shivarov, V Shoutko, J Shukla, E Shumilov, D Son, A Sopczak, V Soulimov, B Smith, T Spickermann, P Spillantini, M Steuer, DP Stickland, F Sticozzi, H Stone, B Stoyanov, K Strauch, K Sudhakar, G Sultanov, LZ Sun, GF Susinno, H Suter, JD Swain, XW Tang, L Tauscher, L Taylor, SCC Ting, SM Ting, O Toker, F Tonisch, M Tonutti, SC Tonwar, J Toth, A Tsaregorodtsev, G Tsipolitis, C Tully, H Tuchscherer, J Ulbricht, L Urban, U Uwer, E Valente, RT vandeWalle, I Vetlitsky, G Viertel, M Vivargent, R Volkert, H Vogel, H Vogt, I Vorobiev, AA Vorobyov, AA Vorobyov, L Vuilleumier, M Wadhwa, W Wallraff, JC Wang, XL Wang, YF Wang, ZM Wang, A Weber, R Weill, C Willmott, E Wittgenstein, SX Wu, S Wynhoff, J Xu, ZZ Xu, BZ Yang, CG Yang, XY Yao, JB Ye, SC Yeh, JM You, C Zaccardelli, A Zalite, P Zemp, JY Zeng, Y Zeng, Z Zhang, ZP Zhang, B Zhou, GJ Zhou, JF Zhou, Y Zhou, GY Zhu, RY Zhu, A Zichichi, BCC vanderZwaan


Measurement of sigma B(W->e nu) and sigma B(Z(0)->e(+)e(-)) in p(p)over-bar collisions at root s=1.8 TeV

PHYSICAL REVIEW LETTERS 76 (1996) 3070-3075

F Abe, MG Albrow, SR Amendolia, D Amidei, J Antos, C AnwayWiese, G Apollinari, H Areti, M Atac, P Auchincloss, F Azfar, P Azzi, N Bacchetta, W Badgett, MW Bailey, J Bao, P deBarbaro, A BarbaroGaltieri, VE Barnes, BA Barnett, P Bartalini, G Bauer, T Baumann, F Bedeschi, S Behrends, S Belforte, G Bellettini, J Bellinger, D Benjamin, J Benlloch, J Bensinger, D Benton, A Beretvas, JP Berge, S Bertolucci, A Bhatti, K Biery, M Binkley, F Bird, D Bisello, RE Blair, C Blocker, A Bodek, W Bokhari, V Bolognesi, D Bortoletto, C Boswell, T Boulos, G Brandenburg, C Bromberg, E BuckleyGeer, HS Budd, K Burkett, G Busetto, A ByonWagner, KL Byrum, J Cammerata, C Campagnari, M Campbell, A Caner, W Carithers, D Carlsmith, A Castro, Y Cen, F Cervelli, HY Chao, J Chapman, MT Cheng, G Chiarelli, T Chikamatsu, CN Chiou, L Christofek, S Cihangir, AG Clark, M Cobal, M Contreras, J Conway, J Cooper, M Cordelli, C Couyoumtzelis, D Crane, JD Cunningham, T Daniels, F DeJongh, S Delchamps, S DellAgnello, M DellOrso, L Demortier, B Denby, M Deninno, PF Derwent, T Devlin, M Dickson, JR Dittmann, S Donati, RB Drucker, A Dunn, K Einsweiler, JE Elias, R Ely, E Engels, S Eno, D Errede, S Errede, Q Fan, B Farhat, I Fiori, B Flaugher, GW Foster, M Franklin, M Frautschi, J Freeman, J Friedman, H Frisch, A Fry, TA Fuess, Y Fukui, S FUnaki, G Gagliardi, S Galeotti, M Gallinaro, AF Garfinkel, S Geer, DW Gerdes, P Giannetti, N Giokaris, P Giromini, L Gladney, D Glenzinski, M Gold, J Gonzalez, A Gordon, AT Goshaw, K Goulianos, H Grassmann, A Grewal, L Groer, C GrossoPilcher, C Haber, SR Hahn, R Hamilton, R Handler, RM Hans, K Hara, B Harral, RM Harris, SA Hauger, J Hauser, C Hawk, J Heinrich, D CroninHennessy, R Hollebeek, L Holloway, A Holscher, S Hong, G Houk, P Hu, BT Huffman, R Hughes, P Hurst, J Huston, J Huth, J Hylen, M Incagli, J Incandela, H Iso, H Jensen, CP Jessop, U Joshi, RW Kadel, E Kajfasz, T Kamon, T Kaneko, DA Kardelis, H Kasha, Y Kato, L Keeble, RD Kennedy, R Kephart, P Kesten, D Kestenbaum, RM Keup, H Keutelian, F Keyvan, DH Kim, HS Kim, SB Kim, SH Kim, YK Kim, L Kirsch, P Koehn, K Kondo, J Konigsberg, S Kopp, K Kordas, W Koska, E Kovacs, W Kowald, M Krasberg, J Kroll, M Kruse, SE Kuhlmann, E Kuns, AT Laasanen, N Labanca, S Lammel, JI Lamoureux, T LeCompte, S Leone, JD Lewis, P Limon, M Lindgren, TM Liss, N Lockyer, C Loomis, O Long, M Loreti, EH Low, J Lu, D Lucchesi, CB Luchini, P Lukens, J Lys, P Maas, K Maeshima, A Maghakian, P Maksimovic, M Mangano, J Mansour, M Mariotti, JP Marriner, A Martin, JAJ Matthews, R Mattingly, P McIntyre, P Melese, A Menzione, E Meschi, G Michail, S Mikamo, M Miller, R Miller, T Mimashi, S Miscetti, M Mishina, H Mitsushio, S Miyashita, Y Morita, S Moulding, J Mueller, A Mukherjee, T Muller, P Musgrave, LF Nakae, I Nakano, CC Nelson, D Neuberger, C NewmanHolmes, L Nodulman, S Ogawa, SH Oh, KE Ohl, R Oishi, T Okusawa, C Pagliarone, R Paoletti, V Papadimitriou, S Park, J Patrick, G Pauletta, M Paulini, L Pescara, MD Peters, TJ Phillips, G Piacentino, M Pillai, R Plunkett, L Pondrom, N Produit, J Proudfoot, F Pothos, G Punzi, K Ragan, F Rimondi, L Ristori, M RoachBellino, WJ Robertson, T Rodrigo, J Romano, L Rosenson, WK Sakumoto, D Saltzberg, A Sansoni, V Scarpine, A Schindler, P Schlabach, EE Schmidt, MP Schmidt, O Schneider, GF Sciacca, A Scribano, S Segler, S Seidel, Y Seiya, G Sganos, A Sgolacchia, M Shapiro, NM Shaw, Q Shen, PF Shepard, M Shimojima, M Shochet, J Siegrist, A Sill, P Sinervo, P Singh, J Skarha, K Sliwa, DA Smith, FD Snider, L Song, T Song, J Spalding, L Spiegel, P Sphicas, A Spies, L Stanco, J Steele, A Stefanini, K Strahl, J Strait, D Stuart, G Sullivan, K Sumorok, RL Swartz, T Takahashi, K Takikawa, F Tartarelli, W Taylor, PK Teng, Y Teramoto, S Tether, D Theriot, J Thomas, TL Thomas, R Thun, M Timko, P Tipton, A Titov, S Tkaczyk, K Tollefson, A Tollestrup, J Tonnison, JF deTroconiz, J Tseng, M Turcotte, N Turini, N Uemura, F Ukegawa, G Unal, SC vandenBrink, S Vejcik, R Vidal, M Vondracek, D Vucinic, RG Wagner, RL Wagner, N Wainer, RC Walker, C Wang, CH Wang, G Wang, J Wang, MJ Wang, QF Wang, A Warburton, G Watts, T Watt, R Webb, C Wei, C Wendt, H Wenzel, WC Wester, T Westhusing, AB Wicklund, E Wicklund, R Wilkinson, HH Williams, P Wilson, BL Winer, J Wolinski, DY Wu, X Wu, J Wyss, A Yagil, W Yao, K Yasuoka, Y Ye, GP Yeh, P Yeh, M Yin, J Yoh, C Yosef, T Yoshida, D Yovanovitch, I Yu, JC Yun, A Zanetti, F Zetti, L Zhang, S Zhang, W Zhang, S Zucchelli


Search for charged Higgs boson decays of the top quark using hadronic τ decays

Physical Review D - Particles, Fields, Gravitation and Cosmology 54 (1996) 735-742

P Auchincloss, F Azfar, P Azzi-Bacchetta, N Bacchetta, W Badgett, S Bagdasarov, MW Bailey, J Bao, P de Barbaro, A Barbaro-Galtieri, VE Barnes, BA Barnett, G Bauer, T Baumann, F Bedeschi, S Behrends, S Belforte, G Bellettini, J Bellinger, D Benjamin, J Benlloch, J Bensinger, D Benton, A Beretvas, JP Berge, J Berryhill, S Bertolucci, A Bhatti, K Biery, M Binkley, D Bisello, RE Blair, C Blocker, A Bodek, W Bokhari, V Bolognesi, D Bortoletto, J Boudreau, L Breccia, C Bromberg, N Bruner, E Buckley-Geer, HS Budd, K Burkett, G Busetto, A Byon-Wagner, KL Byrum, J Cammerata, C Campagnari, M Campbell, A Caner, W Carithers, D Carlsmith, A Castro, D Cauz, Y Cen, F Cervelli, HY Chao, J Chapman, MT Cheng, G Chiarelli, T Chikamatsu, CN Chiou, L Christofek, S Cihangir, AG Clark, M Cobal, M Contreras, J Conway, J Cooper, M Cordelli, C Couyumtzelis, D Crane, D Cronin-Hennessy, R Culbertson, JD Cunningham, T Daniels, F DeJongh, S Delchamps, S Dell’Agnello, M Dell’Orso, L Demortier, B Denby, M Deninno, PF Derwent, T Devlin, M Dickson

We present the result of a search for charged Higgs boson decays of the top quark, produced in p-p collisions at √s=1.8 TeV. When the charged Higgs boson is heavy and decays to a τ lepton, which subsequently decays hadronically, the resulting events have a unique signature: large missing transverse energy and the low-charged-multiplicity τ. Data collected in 1992 and 1993 at the Collider Detector at Fermilab, corresponding to 18.7±0.7 pb-1, exclude new regions of combined top quark and charged Higgs boson mass, in extensions to the standard model with two Higgs doublets. © 1996 The American Physical Society.


High rate large dynamic range analog circuitry and digitizers for fast calorimetry

IEEE Transactions on Nuclear Science 43 (1996) 1605-1609

P Ponting, M Sozzi, O Vossnack, H Wahl

This paper describes the issues encountered in the design of a large dynamic range digitizer for calorimetry. A gain switching technology developed for the liquid krypton calorimeter of the NA48 CP-violation experiment at CERN is described in detail. 14 bit dynamic range and better than 300 ps time resolution were achieved in beam tests with an 8 channel prototype. A mixed analog/digital ASIC has been developed. A 13'500 channel system is being produced which will be put into operation in 1996. © 1996 IEEE.


A fully software-programmable pipelined trigger-processing module

IEEE Transactions on Nuclear Science 43 (1996) 1689-1694

P Kapusta, H Wahl, M Ziolkowski

We describe a general purpose 40MHz pipelined trigger processing board containing six look-up tables and the logic needed to programmably route the signals between them. A series of identical boards are connected in cascade in the NA48 CP-violation experiment at CERN, accept digital inputs generated from calorimeter signals and are used to perform the different computations necessary for the trigger reconstruction. The board architecture is designed to be flexible so that a single basic hardware design can perform all the different algorithms we require and so that the trigger algorithms can be adapted if needed. The computation latency of the combined network of eight boards is approximately 3μs. We present examples of some of the functions which have been implemented. We discuss the automatic reprogramming software which has been developed so that a new design can be implemented easily. © 1996 IEEE.


High rate large dynamic range analog circuitry and digitizers for fast calorimetry

(1996) 418-422

B Hallgren, F Bal, GD Barr, P Buchholz, F Formenti, W Funk, Y Kozhevnikov, A Lacourt, G Laverriere, M Martini, A Papi, P Ponting, M Sozzi, O Vossnack, H Wahl


Performance of an electromagnetic liquid krypton calorimeter based on a ribbon electrode tower structure

Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 370 (1996) 413-424

L Gatignon, A Gonidec, B Hallgren, G Kesseler, A Lacourt, G Laverrière, G Linser, M Martini, A Norton, D Schinzel, W Seidl, MS Sozzi, H Taureg, O Vossnack, H Wahl, P Wertelaers, J Waterings, M Ziolkowski, A Kalinin, V Kekelidze, Y Kozhevnikov, L Bertolotto, V Carassiti, J Duclos, A Gianoli, PL Frabetti, M Savriè, O Zeitnitz, M Calvetti, P Lubrano, M Pepe, P Calafiura, C Cerri, F Costantini, R Fantechi, B Gorini, I Mannelli, V Marzulli, D Bédérède, P Debu, A Givernaud, L Gosset, J Heitzmann, E Mazzucato, B Peyaud, R Turlay, C Biino, A Ceccucci, P Maas, S Palestini

The NA48 collaboration is preparing a new experiment at CERN aiming to study CP violation in the K0-K0system with an accuracy of 2 × 10-4in the parameter ℛe(∈′/∈). Decays in two π0's will be recorded by a quasi-homogeneous liquid krypton calorimeter. A liquid krypton calorimeter has been chosen to combine good energy, position and time resolution with precise charge calibration and long-term stability. The prototype calorimeter incorporating the final design of the electrode read-out structure is presented in this paper. An energy resolution of ≃3.5%/√E with a constant term smaller than 0.5% has been obtained. The time resolution was found to be better than 300 ps above 15 GeV.

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