Publications by William Balunas


Searches for electroweak production of supersymmetric particles with compressed mass spectra in √s=13 TeV pp collisions with the ATLAS detector

Physical Review D: Particles, Fields, Gravitation and Cosmology American Physical Society 101 (2020) 052005

L Ambroz, G Artoni, M Backes, W Balunas, A Barr, D Bortoletto, Foti, J Frost, GE Gallardo, E Gallas, C Gwenlan, B Huffman, C Merlassino, K Nagai, R Nickerson, SR Paredes Saenz, Petrov, Sharma, Shipsey, M Stankaityte, C Tosciri, Wölker, Zgubič

This paper presents results of searches for the electroweak production of supersymmetric particles in models with compressed mass spectra. The searches use 139 fb⁻¹ of √s = 13 TeV proton-proton collision data collected by the ATLAS experiment at the Large Hadron Collider. Events with missing transverse momentum and two same-flavor, oppositely charged, low-transverse-momentum leptons are selected, and are further categorized by the presence of hadronic activity from initial-state radiation or a topology compatible with vector-boson fusion processes. The data are found to be consistent with predictions from the Standard Model. The results are interpreted using simplified models of R-parity-conserving supersymmetry in which the lightest supersymmetric partner is a neutralino with a mass similar to the lightest chargino, the second-to-lightest neutralino, or the slepton. Lower limits on the masses of charginos in different simplified models range from 193 to 240 GeV for moderate mass splittings, and extend down to mass splittings of 1.5 to 2.4 GeV at the LEP chargino bounds (92.4 GeV). Similar lower limits on degenerate light-flavor sleptons extend up to masses of 251 GeV and down to mass splittings of 550 MeV. Constraints on vector-boson fusion production of electroweak SUSY states are also presented.


Search for invisible Higgs boson decays in vector boson fusion at root s=13 TeV with the ATLAS detector

PHYSICS LETTERS B 793 (2019) 499-519

M Aaboud, G Aad, B Abbott, O Abdinov, B Abeloos, DK Abhayasinghe, SH Abidi, OS AbouZeid, NL Abraham, H Abramowicz, H Abreu, Y Abulaiti, BS Acharya, S Adachi, L Adamczyk, J Adelman, M Adersberger, A Adiguzel, T Adye, AA Affolder, Y Afik, C Agheorghiesei, JA Aguilar-Saavedra, F Ahmadov, G Aielli, S Akatsuka, TPA Akesson, E Akilli, AV Akimov, GL Alberghi, J Albert, P Albicocco, MJ Alconada Verzini, S Alderweireldt, M Aleksa, IN Aleksandrov, C Alexa, T Alexopoulos, M Alhroob, B Ali, G Alimonti, J Alison, SP Alkire, C Allaire, BMM Allbrooke, BW Allen, PP Allport, A Aloisio, A Alonso, F Alonso, C Alpigiani, AA Alshehri, MI Alstaty, BA Gonzalez, D Alvarez Piqueras, MG Alviggi, BT Amadio, Y Amaral Coutinho, L Ambroz, C Amelung, D Amidei, SP Amor Dos Santos, S Amoroso, CS Amrouche, C Anastopoulos, LS Ancu, N Andari, T Andeen, CF Anders, JK Anders, KJ Anderson, A Andreazza, V Andrei, CR Anelli, S Angelidakis, I Angelozzi, A Angerami, AV Anisenkov, A Annovi, C Antel, MT Anthony, M Antonelli, DJA Antrim, F Anulli, M Aoki, LA Bella, G Arabidze, JP Araque, V Araujo Ferraz, R Araujo Pereira, ATH Arce, RE Ardell, FA Arduh, J-F Arguin, S Argyropoulos, AJ Armbruster, LJ Armitage, A Armstrong, O Arnaez, H Arnold, M Arratia, O Arslan, A Artamonov, G Artoni, S Artz, S Asai, N Asbah, A Ashkenazi, EM Asimakopoulou, L Asquith, K Assamagan, R Astalos, RJ Atkin, M Atkinson, NB Atlay, K Augsten, G Avolio, R Avramidou, MK Ayoub, G Azuelos, AE Baas, MJ Baca, H Bachacou, K Bachas, M Backes, P Bagnaia, M Bahmani, H Bahrasemani, AJ Bailey, JT Baines, M Bajic, C Bakalis, OK Baker, PJ Bakker, DB Gupta, EM Baldin, P Balek, F Balli, WK Balunas, J Balz, E Banas, A Bandyopadhyay, S Banerjee, AAE Bannoura, L Barak, WM Barbe, EL Barberio, D Barberis, M Barbero, T Barillari, M-S Barisits, J Barkeloo, T Barklow, N Barlow, R Barnea, SL Barnes, BM Barnett, RM Barnett, Z Barnovska-Blenessy, A Baroncelli, G Barone, AJ Barr, L Barranco Navarro, F Barreiro, JBG da Costa, R Bartoldus, AE Barton, P Bartos, A Basalaev, A Bassalat, RL Bates, SJ Batista, S Batlamous, JR Batley, M Battaglia, M Bauce, F Bauer, KT Bauer, HS Bawa, JB Beacham, MD Beattie, T Beau, PH Beauchemin, P Bechtle, HC Beck, HP Beck, K Becker, M Becker, C Becot, A Beddall, AJ Beddall, VA Bednyakov, M Bedognetti, CP Bee, TA Beermann, M Begalli, M Begel, A Behera, JK Behr, AS Bell, G Bella, L Bellagamba, A Bellerive, M Bellomo, P Bellos, K Belotskiy, NL Belyaev, O Benary, D Benchekroun, M Bender, N Benekos, Y Benhammou, EB Noccioli, J Benitez, DP Benjamin, M Benoit, JR Bensinger, S Bentvelsen, L Beresford, M Beretta, D Berge, EB Kuutmann, N Berger, LJ Bergsten, J Beringer, S Berlendis, NR Bernard, G Bernardi, C Bernius, FU Bernlochner, T Berry, P Berta, C Bertella, G Bertoli, IA Bertram, GJ Besjes, OB Bylund, M Bessner, N Besson, A Bethani, S Bethke, A Betti, AJ Bevan, J Beyer, RM Bianchi, O Biebel, D Biedermann, R Bielski, K Bierwagen, NV Biesuz, M Biglietti, TRV Billoud, M Bindi, A Bingul, C Bini, S Biondi, M Birman, T Bisanz, JP Biswal, C Bittrich, DM Bjergaard, JE Black, KM Black, T Blazek, I Bloch, C Blocker, A Blue, U Blumenschein, D Blunier, GJ Bobbink, VS Bobrovnikov, SS Bocchetta, A Bocci, D Boerner, D Bogavac, AG Bogdanchikov, C Bohm, V Boisvert, P Bokan, T Bold, AS Boldyrev, AE Bolz, M Bomben, M Bona, JS Bonilla, M Boonekamp, A Borisov, G Borissov, J Bortfeldt, D Bortoletto, V Bortolotto, D Boscherini, M Bosman, JD Bossio Sola, K Bouaouda, J Boudreau, EV Bouhova-Thacker, D Boumediene, C Bourdarios, SK Boutle, A Boveia, J Boyd, IR Boyko, AJ Bozson, J Bracinik, N Brahimi, A Brandt, G Brandt, O Brandt, F Braren, U Bratzler, B Brau, JE Brau, WDB Madden, K Brendlinger, AJ Brennan, L Brenner, R Brenner, S Bressler, B Brickwedde, DL Briglin, D Britton, D Britzger, I Brock, R Brock, G Brooijmans, T Brooks, WK Brooks, E Brost, JH Broughton, PAB de Renstrom, D Bruncko, A Bruni, G Bruni, LS Bruni, S Bruno, BH Brunt, M Bruschi, N Bruscino, P Bryant, L Bryngemark, T Buanes, Q Buat, P Buchholz, AG Buckley, IA Budagov, MK Bugge, F Buehrer, O Bulekov, D Bullock, TJ Burch, S Burdin, CD Burgard, AM Burger, B Burghgrave, K Burka, S Burke, I Burmeister, JTP Burr, D Buescher, V Buescher, E Buschmann, P Bussey, JM Butler, CM Buttar, JM Butterworth, P Butti, W Buttinger, A Buzatu, AR Buzykaev, G Cabras, S Cabrera Urban, D Caforio, H Cai, VMM Cairo, O Cakir, N Calace, P Calafiura, A Calandri, G Calderini, P Calfayan, G Callea, LP Caloba, S Calvente Lopez, D Calvet, S Calvet, TP Calvet, M Calvetti, RC Toro, S Camarda, P Camarri, D Cameron, RC Armadans, C Camincher, S Campana, M Campanelli, A Camplani, A Campoverde, V Canale, MC Bret, J Cantero, T Cao, Y Cao, MDMC Garrido, I Caprini, M Caprini, M Capua, RM Carbone, R Cardarelli, FC Cardillo, I Carli, T Carli, G Carlino, BT Carlson, L Carminati, RMD Carney, S Caron, E Carquin, S Carra, GD Carrillo-Montoya, D Casadei, MP Casado, AF Casha, M Casolino, DW Casper, R Castelijn, FL Castillo, V Castillo Gimenez, NF Castro, A Catinaccio, JR Catmore, A Cattai, J Caudron, V Cavaliere, E Cavallaro, D Cavalli, M Cavalli-Sforza, V Cavasinni, E Celebi, F Ceradini, L Cerda Alberich, AS Cerqueira, A Cerri, L Cerrito, F Cerutti, A Cervelli, SA Cetin, A Chafaq, D Chakraborty, SK Chan, WS Chan, YL Chan, JD Chapman, DG Charlton, CC Chau, CAC Barajas, S Che, A Chegwidden, S Chekanov, SV Chekulaev, GA Chelkov, MA Chelstowska, C Chen, CH Chen, H Chen, J Chen, S Chen, SJ Chen, X Chen, Y Chen, Y-H Chen, HC Cheng, HJ Cheng, A Cheplakov, E Cheremushkina, RC El Moursli, E Cheu, K Cheung, L Chevalier, V Chiarella, G Chiarelli, G Chiodini, AS Chisholm, A Chitan, I Chiu, YH Chiu, MV Chizhov, K Choi, AR Chomont, S Chouridou, YS Chow, V Christodoulou, MC Chu, J Chudoba, AJ Chuinard, JJ Chwastowski, L Chytka, D Cinca, V Cindro, IA Cioara, A Ciocio, F Cirotto, ZH Citron, M Citterio, A Clark, MR Clark, PJ Clark, C Clement, Y Coadou, M Cobal, A Coccaro, J Cochran, AEC Coimbra, L Colasurdo, B Cole, AP Colijn, J Collot, P Conde Muino, E Coniavitis, SH Connell, IA Connelly, S Constantinescu, F Conventi, AM Cooper-Sarkar, F Cormier, KJR Cormier, M Corradi, EE Corrigan, F Corriveau, A Cortes-Gonzalez, MJ Costa, D Costanzo, G Cottin, G Cowan, BE Cox, J Crane, K Cranmer, SJ Crawley, RA Creager, G Cree, S Crepe-Renaudin, F Crescioli, M Cristinziani, V Croft, G Crosetti, A Cueto, T Cuhadar Donszelmann, AR Cukierman, J Cuth, S Czekierda, P Czodrowski, MJDCS De Sousa, C Da Via, W Dabrowski, T Dado, S Dahbi, T Dai, F Dallaire, C Dallapiccola, M Dam, G D'amen, J Damp, JR Dandoy, MF Daneri, NP Dang, ND Dann, M Danninger, V Dao, G Darbo, S Darmora, O Dartsi, A Dattagupta, T Daubney, S D'Auria, W Davey, C David, T Davidek, DR Davis, E Dawe, I Dawson, K De, R De Asmundis, A De Benedetti, M De Beurs, S De Castro, S De Cecco, N De Groot, P De Jong, H De la Torre, F De Lorenzi, A De Maria, D De Pedis, A De Salvo, U De Sanctis, A De Santo, KDV Corga, JBDV De Regie, C Debenedetti, DV Dedovich, N Dehghanian, M Del Gaudio, J Del Peso, YD Diaz, D Delgove, F Deliot, CM Delitzsch, M Della Pietra, D Della Volpe, A Dell'Acqua, L Dell'Asta, M Delmastro, C Delporte, PA Delsart, DA DeMarco, S Demers, M Demichev, SP Denisov, D Denysiuk, L D'Eramo, D Derendarz, JE Derkaoui, F Derue, P Dervan, K Desch, C Deterre, K Dette, MR Devesa, PO Deviveiros, A Dewhurst, S Dhaliwal, FA Di Bello, A Di Ciaccio, L Di Ciaccio, WK Di Clemente, C Di Donato, A Di Girolamo, B Di Micco, R Di Nardo, KF Di Petrillo, A Di Simone, R Di Sipio, D Di Valentino, C Diaconu, M Diamond, FA Dias, T Dias Do Vale, MA Diaz, J Dickinson, EB Diehl, J Dietrich, SD Cornell, A Dimitrievska, J Dingfelder, F Dittus, F Djama, T Djobava, JI Djuvsland, MAB Do Vale, M Dobre, D Dodsworth, C Doglioni, J Dolejsi, Z Dolezal, M Donadelli, J Donini, A D'onofrio, M D'Onofrio, J Dopke, A Doria, MT Dova, AT Doyle, E Drechsler, E Dreyer, T Dreyer, Y Du, J Duarte-Campderros, F Dubinin, M Dubovsky, A Dubreuil, E Duchovni, G Duckeck, A Ducourthial, OA Ducu, D Duda, A Dudarev, AC Dudder, EM Duffield, L Duflot, M Duehrssen, C Duelsen, M Dumancic, AE Dumitriu, AK Duncan, M Dunford, A Duperrin, HD Yildiz, M Dueren, A Durglishvili, D Duschinger, B Dutta, D Duvnjak, M Dyndal, S Dysch, BS Dziedzic, C Eckardt, KM Ecker, RC Edgar, T Eifert, G Eigen, K Einsweiler, T Ekelof, M El Kacimi, R El Kosseifi, V Ellajosyula, M Ellert, F Ellinghaus, AA Elliot, N Ellis, J Elmsheuser, M Elsing, D Emeliyanov, Y Enari, JS Ennis, MB Epland, J Erdmann, A Ereditato, S Errede, M Escalier, C Escobar, O Estrada Pastor, AI Etienvre, E Etzion, H Evans, A Ezhilov, M Ezzi, F Fabbri, L Fabbri, V Fabiani, G Facini, RM Faisca Rodrigues Pereira, RM Fakhrutdinov, S Falciano, PJ Falke, S Falke, J Faltova, Y Fang, M Fanti, A Farbin, A Farilla, EM Farina, T Farooque, S Farrell, SM Farrington, P Farthouat, F Fassi, P Fassnacht, D Fassouliotis, MF Giannelli, A Favareto, WJ Fawcett, L Fayard, OL Fedin, W Fedorko, M Feickert, S Feigl, L Feligioni, C Feng, EJ Feng, M Feng, MJ Fenton, AB Fenyuk, L Feremenga, J Ferrando, A Ferrari, P Ferrari, R Ferrari, DEF de Lima, A Ferrer, D Ferrere, C Ferretti, F Fiedler, A Filipcic, F Filthaut, KD Finelli, MCN Fiolhais, L Fiorini, C Fischer, WC Fisher, N Flaschel, I Fleck, P Fleischmann, RRM Fletcher, T Flick, BM Flierl, LM Flores, LRF Castillo, N Fomin, GT Forcolin, A Formica, FA Forster, AC Forti, AG Foster, D Fournier, H Fox, S Fracchia, P Francavilla, M Franchini, S Franchino, D Francis, L Franconi, M Franklin, M Frate, M Fraternali, D Freeborn, SM Fressard-Batraneanu, B Freund, WS Freund, D Froidevaux, JA Frost, C Fukunaga, E Fullana Torregrosa, T Fusayasu, J Fuster, O Gabizon, A Gabrielli, GP Gach, S Gadatsch, P Gadow, G Gagliardi, LG Gagnon, C Galea, B Galhardo, EJ Gallas, BJ Gallop, P Gallus, G Galster, RG Goni, KK Gan, S Ganguly, Y Gao, YS Gao, C Garcia, JE Garcia Navarro, JAG Pascual, M Garcia-Sciveres, RW Gardner, N Garelli, V Garonne, K Gasnikova, A Gaudiello, G Gaudio, IL Gavrilenko, A Gavrilyuk, C Gay, G Gaycken, EN Gazis, CNP Gee, J Geisen, M Geisen, MP Geisler, K Gellerstedt, C Gemme, MH Genest, C Geng, S Gentile, C Gentsos, S George, D Gerbaudo, G Gessner, S Ghasemi, MG Bostanabad, M Ghneimat, B Giacobbe, S Giagu, N Giangiacomi, P Giannetti, A Giannini, SM Gibson, M Gignac, D Gillberg, G Gilles, DM Gingrich, MP Giordani, FM Giorgi, PF Giraud, P Giromini, G Giugliarelli, D Giugni, F Giuli, M Giulini, S Gkaitatzis, I Gkialas, EL Gkougkousis, P Gkountoumis, LK Gladilin, C Glasman, J Glatzer, PCF Glaysher, A Glazov, M Goblirsch-Kolb, J Godlewski, S Goldfarb, T Golling, D Golubkov, A Gomes, R Goncalves Gama, R Goncalo, G Gonella, L Gonella, A Gongadze, F Gonnella, JL Gonski, S Gonzalez de la Hoz, S Gonzalez-Sevilla, L Goossens, PA Gorbounov, HA Gordon, B Gorini, E Gorini, A Gorisek, AT Goshaw, C Goessling, MI Gostkin, CA Gottardo, CR Goudet, D Goujdami, AG Goussiou, N Govender, C Goy, E Gozani, I Grabowska-Bold, POJ Gradin, EC Graham, J Gramling, E Gramstad, S Grancagnolo, V Gratchev, PM Gravila, C Gray, HM Gray, ZD Greenwood, C Grefe, K Gregersen, IM Gregor, P Grenier, K Grevtsov, J Griffiths, AA Grillo, K Grimm, S Grinstein, P Gris, J-F Grivaz, S Groh, E Gross, J Grosse-Knetter, GC Grossi, ZJ Grout, C Grud, A Grummer, L Guan, W Guan, J Guenther, A Guerguichon, F Guescini, D Guest, R Gugel, B Gui, T Guillemin, S Guindon, U Gul, C Gumpert, J Guo, W Guo, Y Guo, Z Guo, R Gupta, S Gurbuz, G Gustavino, BJ Gutelman, P Gutierrez, C Gutschow, C Guyot, MP Guzik, C Gwenlan, CB Gwilliam, A Haas, C Haber, HK Hadavand, N Haddad, A Hadef, S Hageboeck, M Hagihara, H Hakobyan, M Haleem, J Haley, G Halladjian, GD Hallewell, K Hamacher, P Hamal, K Hamano, A Hamilton, GN Hamity, K Han, L Han, S Han, K Hanagaki, M Hance, DM Handl, B Haney, R Hankache, P Hanke, E Hansen, JB Hansen, JD Hansen, MC Hansen, PH Hansen, K Hara, AS Hard, T Harenberg, S Harkusha, PF Harrison, NM Hartmann, Y Hasegawa, A Hasib, S Hassani, S Haug, R Hauser, L Hauswald, LB Havener, M Havranek, CM Hawkes, RJ Hawkings, D Hayden, C Hayes, CP Hays, JM Hays, HS Hayward, SJ Haywood, MP Heath, V Hedberg, L Heelan, S Heer, KK Heidegger, J Heilman, S Heim, T Heim, B Heinemann, JJ Heinrich, L Heinrich, C Heinz, J Hejbal, L Helary, A Held, S Hellesund, S Hellman, C Helsens, RCW Henderson, Y Heng, S Henkelmann, AMH Correia, GH Herbert, H Herde, V Herget, YH Jimenez, H Herr, MG Herrmann, G Herten, R Hertenberger, L Hervas, TC Herwig, GG Hesketh, NP Hessey, JW Hetherly, S Higashino, E Higon-Rodriguez, K Hildebrand, E Hill, JC Hill, KK Hill, KH Hiller, SJ Hillier, M Hils, I Hinchliffe, M Hirose, D Hirschbuehl, B Hiti, O Hladik, DR Hlaluku, X Hoad, J Hobbs, N Hod, MC Hodgkinson, A Hoecker, MR Hoeferkamp, F Hoenig, D Hohn, D Hohov, TR Holmes, M Holzbock, M Homann, S Honda, T Honda, TM Hong, A Hoenle, BH Hooberman, WH Hopkins, Y Horii, P Horn, AJ Horton, LA Horyn, J-Y Hostachy, A Hostiuc, S Hou, A Hoummada, J Howarth, J Hoya, M Hrabovsky, J Hrdinka, I Hristova, J Hrivnac, A Hrynevich, T Hryn'ova, PJ Hsu, S-C Hsu, Q Hu, S Hu, Y Huang, Z Hubacek, F Hubaut, M Huebner, F Huegging, TB Huffman, EW Hughes, M Huhtinen, RFH Hunter, P Huo, AM Hupe, N Huseynov, J Huston, J Huth, R Hyneman, G Iacobucci, G Iakovidis, I Ibragimov, L Iconomidou-Fayard, Z Idrissi, P Iengo, R Ignazzi, O Igonkina, R Iguchi, T Iizawa, Y Ikegami, M Ikeno, D Iliadis, N Ilic, F Iltzsche, G Introzzi, M Iodice, K Iordanidou, V Ippolito, MF Isacson, N Ishijima, M Ishino, M Ishitsuka, W Islam, C Issever, S Istin, F Ito, JMI Ponce, R Iuppa, A Ivina, H Iwasaki, JM Izen, V Izzo, S Jabbar, P Jacka, P Jackson, RM Jacobs, V Jain, G Jaekel, KB Jakobi, K Jakobs, S Jakobsen, T Jakoubek, DO Jamin, DK Jana, R Jansky, J Janssen, M Janus, PA Janus, G Jarlskog, N Javadov, T Javurek, M Javurkova, F Jeanneau, L Jeanty, J Jejelava, A Jelinskas, P Jenni, J Jeong, S Jezequel, H Ji, J Jia, H Jiang, Y Jiang, Z Jiang, S Jiggins, FA Jimenez Morales, J Jimenez Pena, S Jin, A Jinaru, O Jinnouchi, H Jivan, P Johansson, KA Johns, CA Johnson, WJ Johnson, K Jon-And, RWL Jones, SD Jones, S Jones, TJ Jones, J Jongmanns, PM Jorge, J Jovicevic, X Ju, JJ Junggeburth, A Juste Rozas, A Kaczmarska, M Kado, H Kagan, M Kagan, T Kaji, E Kajomovitz, CW Kalderon, A Kaluza, S Kama, A Kamenshchikov, L Kanjir, Y Kano, VA Kantserov, J Kanzaki, B Kaplan, LS Kaplan, D Kar, MJ Kareem, E Karentzos, SN Karpov, ZM Karpova, V Kartvelishvili, AN Karyukhin, K Kasahara, L Kashif, RD Kass, A Kastanas, Y Kataoka, C Kato, J Katzy, K Kawade, K Kawagoe, T Kawamoto, G Kawamura, EF Kay, VF Kazanin, R Keeler, R Kehoe, JS Keller, E Kellermann, JJ Kempster, J Kendrick, O Kepka, S Kersten, BP Kersevan, RA Keyes, M Khader, F Khalil-Zada, A Khanov, AG Kharlamov, T Kharlamova, A Khodinov, TJ Khoo, E Khramov, J Khubua, S Kido, M Kiehn, CR Kilby, SH Kim, YK Kim, N Kimura, OM Kind, BT King, D Kirchmeier, J Kirk, AE Kiryunin, T Kishimoto, D Kisielewska, V Kitali, O Kivernyk, E Kladiva, T Klapdor-Kleingrothaus, MH Klein, M Klein, U Klein, K Kleinknecht, P Klimek, A Klimentov, R Klingenberg, T Klingl, T Klioutchnikova, FF Klitzner, P Kluit, S Kluth, E Kneringer, EBFG Knoops, A Knue, A Kobayashi, D Kobayashi, T Kobayashi, M Kobel, M Kocian, P Kodys, T Koffas, E Koffeman, NM Koehler, T Koi, M Kolb, I Koletsou, T Kondo, N Kondrashova, K Koeneke, AC Konig, T Kono, R Konoplich, V Konstantinides, N Konstantinidis, B Konya, R Kopeliansky, S Koperny, K Korcyl, K Kordas, A Korn, I Korolkov, EV Korolkova, O Kortner, S Kortner, T Kosek, VV Kostyukhin, A Kotwal, A Koulouris, A Kourkoumeli-Charalampidi, C Kourkoumelis, E Kourlitis, V Kouskoura, AB Kowalewska, R Kowalewski, TZ Kowalski, C Kozakai, W Kozanecki, AS Kozhin, VA Kramarenko, G Kramberger, D Krasnopevtsev, MW Krasny, A Krasznahorkay, D Krauss, JA Kremer, J Kretzschmar, P Krieger, K Krizka, K Kroeninger, H Kroha, J Kroll, J Krstic, U Kruchonak, H Krueger, N Krumnack, MC Kruse, T Kubota, S Kuday, JT Kuechler, S Kuehn, A Kugel, F Kuger, T Kuhl, V Kukhtin, R Kukla, Y Kulchitsky, S Kuleshov, YP Kulinich, M Kuna, T Kunigo, A Kupco, T Kupfer, O Kuprash, H Kurashige, LL Kurchaninov, YA Kurochkin, MG Kurth, ES Kuwertz, M Kuze, J Kvita, T Kwan, A La Rosa, JL La Rosa Navarro, L La Rotonda, F La Ruffa, C Lacasta, F Lacava, J Lacey, DPJ Lack, H Lacker, D Lacour, E Ladygin, R Lafaye, B Laforge, T Lagouri, S Lai, S Lammers, W Lampl, E Lancon, U Landgraf, MPJ Landon, MC Lanfermann, VS Lang, JC Lange, RJ Langenberg, AJ Lankford, F Lanni, K Lantzsch, A Lanza, A Lapertosa, S Laplace, JF Laporte, T Lari, FL Manghi, M Lassnig, TS Lau, A Laudrain, M Lavorgna, AT Law, P Laycock, M Lazzaroni, B Le, O Le Dortz, E Le Guirriec, EP Le Quilleuc, M Le Blanc, T Le Compte, F Ledroit-Guillon, CA Lee, GR Lee, L Lee, SC Lee, B Lefebvre, M Lefebvre, F Legger, C Leggett, N Lehmann, GL Miotto, WA Leight, A Leisos, MAL Leite, R Leitner, D Lellouch, B Lemmer, KJC Leney, T Lenz, B Lenzi, R Leone, S Leone, C Leonidopoulos, G Lerner, C Leroy, R Les, AAJ Lesage, CG Lester, M Levchenko, J Leveque, D Levin, LJ Levinson, D Lewis, B Li, C-Q Li, H Li, L Li, Q Li, QY Li, S Li, X Li, Y Li, Z Liang, B Liberti, A Liblong, K Lie, S Liem, A Limosani, CY Lin, K Lin, TH Lin, RA Linck, BE Lindquist, AL Lionti, E Lipeles, A Lipniacka, M Lisovyi, TM Liss, A Lister, AM Litke, JD Little, B Liu, BL Liu, HB Liu, H Liu, JB Liu, JKK Liu, K Liu, M Liu, P Liu, Y Liu, YL Liu, YW Liu, M Livan, A Lleres, JL Merino, SL Lloyd, CY Lo, F LoSterzo, EM Lobodzinska, P Loch, KM Loew, T Lohse, K Lohwasser, M Lokajicek, BA Long, JD Long, RE Long, L Longo, KA Looper, JA Lopez, I Lopez Paz, A Lopez Solis, J Lorenz, N Lorenzo Martinez, M Losada, PJ Loesel, A Loesle, X Lou, A Lounis, J Love, PA Love, JJ Lozano Bahilo, H Lu, M Lu, N Lu, YJ Lu, HJ Lubatti, C Luci, A Lucotte, C Luedtke, F Luehring, I Luise, W Lukas, L Luminari, B Lund-Jensen, MS Lutz, PM Luzi, D Lynn, R Lysak, E Lytken, F Lyu, V Lyubushkin, H Ma, LL Ma, Y Ma, G Maccarrone, A Macchiolo, CM Macdonald, J Machado Miguens, D Madaffari, R Madar, WF Mader, A Madsen, N Madysa, J Maeda, K Maekawa, S Maeland, T Maeno, AS Maevskiy, V Magerl, C 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RT Roberts, SH Robertson, A Robichaud-Veronneau, D Robinson, JEM Robinson, A Robson, E Rocco, C Roda, Y Rodina, S Rodriguez Bosca, A Rodriguez Perez, D Rodriguez Rodriguez, AMR Vera, S Roe, CS Rogan, O Rohne, R Roehrig, CPA Roland, J Roloff, A Romaniouk, M Romano, N Rompotis, M Ronzani, L Roos, S Rosati, K Rosbach, P Rose, N-A Rosien, E Rossi, LP Rossi, L Rossini, JHN Rosten, R Rosten, M Rotaru, J Rothberg, D Rousseau, D Roy, A Rozanov, Y Rozen, X Ruan, F Rubbo, F Ruehr, A Ruiz-Martinez, Z Rurikova, NA Rusakovich, HL Russell, JP Rutherfoord, EM Ruettinger, YF Ryabov, M Rybar, G Rybkin, S Ryu, A Ryzhov, GF Rzehorz, P Sabatini, G Sabato, S Sacerdoti, HF-W Sadrozinski, R Sadykov, FS Tehrani, P Saha, M Sahinsoy, A Sahu, M Saimpert, M Saito, T Saito, H Sakamoto, A Sakharov, D Salamani, G Salamanna, JE Salazar Loyola, D Salek, PHS De Bruin, D Salihagic, A Salnikov, J Salt, D Salvatore, F Salvatore, A Salvucci, A Salzburger, J Samarati, D Sammel, D Sampsonidis, D Sampsonidou, J Sanchez, AS 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Seiden, T Seiss, JM Seixas, G Sekhniaidze, K Sekhon, SJ Sekula, N Semprini-Cesari, S Sen, S Senkin, C Serfon, L Serin, L Serkin, M Sessa, H Severini, F Sforza, A Sfyrla, E Shabalina, JD Shahinian, NW Shaikh, LY Shan, R Shang, JT Shank, M Shapiro, AS Sharma, A Sharma, PB Shatalov, K Shaw, SM Shaw, A Shcherbakova, Y Shen, N Sherafati, AD Sherman, P Sherwood, L Shi, S Shimizu, CO Shimmin, M Shimojima, IPJ Shipsey, S Shirabe, M Shiyakova, J Shlomi, A Shmeleva, DS Saadi, MJ Shochet, S Shojaii, DR Shope, S Shrestha, E Shulga, P Sicho, AM Sickles, PE Sidebo, ES Haddad, O Sidiropoulou, A Sidoti, F Siegert, D Sijacki, J Silva, SM Jr, OMV Silva, SB Silverstein, L Simic, S Simion, E Simioni, M Simon, R Simoniello, P Sinervo, NB Sinev, M Sioli, G Siragusa, I Siral, SY Sivoklokov, J Sjoelin, MB Skinner, P Skubic, M Slater, T Slavicek, M Slawinska, K Sliwa, R Slovak, V Smakhtin, BH Smart, J Smiesko, N Smirnov, SY Smirnov, Y Smirnov, LN Smirnova, O Smirnova, JW Smith, MNK Smith, RW Smith, M Smizanska, K Smolek, AA Snesarev, IM Snyder, S Snyder, R Sobie, AM Soffa, A Soffer, A Sogaard, DA Soh, G Sokhrannyi, CAS Sanchez, M Solar, EY Soldatov, U Soldevila, AA Solodkov, A Soloshenko, OV Solovyanov, V Solovyev, P Sommer, H Son, W Song, A Sopczak, F Sopkova, D Sosa, CL Sotiropoulou, S Sottocornola, R Soualah, AM Soukharev, D South, BC Sowden, S Spagnolo, M Spalla, M Spangenberg, F Spano, D Sperlich, F Spettel, TM Spieker, R Spighi, G Spigo, LA Spiller, DP Spiteri, M Spousta, A Stabile, R Stamen, S Stamm, E Stanecka, RW Stanek, C Stanescu, B Stanislaus, MM Stanitzki, B Stapf, S Stapnes, EA Starchenko, GH Stark, J Stark, SH Stark, P Staroba, P Starovoitov, S Staerz, R Staszewski, M Stegler, P Steinberg, B Stelzer, HJ Stelzer, O Stelzer-Chilton, H Stenzel, TJ Stevenson, GA Stewart, MC Stockton, G Stoicea, P Stolte, S Stonjek, A Straessner, J Strandberg, S Strandberg, M Strauss, P Strizenec, R Stroehmer, DM Strom, R Stroynowski, A Strubig, SA Stucci, B Stugu, J Stupak, NA Styles, D 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Van Vulpen, M Vanadia, W Vandelli, A Vaniachine, P Vankov, R Vari, EW Varnes, C Varni, T Varol, D Varouchas, KE Varvell, GA Vasquez, JG Vasquez, F Vazeille, D Vazquez Furelos, TV Schroeder, J Veatch, V Vecchio, LM Veloce, F Veloso, S Veneziano, A Ventura, M Venturi, N Venturi, V Vercesi, M Verducci, CMV Infante, W Verkerke, AT Vermeulen, JC Vermeulen, MC Vetterli, N Viaux Maira, MVB Pinto, I Vichou, T Vickey, OEV Boeriu, GHA Viehhauser, S Viel, L Vigani, M Villa, MV Perez, E Vilucchi, MG Vincter, VB Vinogradov, A Vishwakarma, C Vittori, I Vivarelli, S Vlachos, M Vogel, P Vokac, G Volpi, SE Von Buddenbrock, E Von Toerne, V Vorobel, K Vorobev, M Vos, JH Vossebeld, N Vranjes, MV Milosavljevic, V Vrba, M Vreeswijk, T Sfiligoj, R Vuillermet, I Vukotic, T Zenis, L Zivkovic, P Wagner, W Wagner, J Wagner-Kuhr, H Wahlberg, S Wahrmund, K Wakamiya, VM Walbrecht, J Walder, R Walker, SD Walker, W Walkowiak, V Wallangen, AM Wang, C Wang, F Wang, H Wang, J Wang, P Wang, Q Wang, R-J Wang, R Wang, SM 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Yamaguchi, Y Yamaguchi, A Yamamoto, T Yamanaka, F Yamane, M Yamatani, T Yamazaki, Y Yamazaki, Z Yan, HJ Yang, HT Yang, S Yang, Y Yang, Z Yang, W-M Yao, YC Yap, Y Yasu, E Yatsenko, J Ye, S Ye, I Yeletskikh, E Yigitbasi, E Yildirim, K Yorita, K Yoshihara, CJS Young, C Young, J Yu, X Yue, SPY Yuen, B Zabinski, G Zacharis, E Zaffaroni, R Zaidan, AM Zaitsev, N Zakharchuk, J Zalieckas, S Zambito, D Zanzi, DR Zaripovas, SV Zeissner, C Zeitnitz, G Zemaityte, JC Zeng, Q Zeng, O Zenin, D Zerwas, M Zgubic, DF Zhang, D Zhang, F Zhang, G Zhang, H Zhang, J Zhang, L Zhang, M Zhang, P Zhang, R Zhang, X Zhang, Y Zhang, Z Zhang, P Zhao, X Zhao, Y Zhao, Z Zhao, A Zhemchugov, B Zhou, C Zhou, L Zhou, MS Zhou, M Zhou, N Zhou, Y Zhou, CG Zhu, HL Zhu, H Zhu, J Zhu, Y Zhu, X Zhuang, K Zhukov, V Zhulanov, A Zibell, D Zieminska, NI Zimine, S Zimmermann, Z Zinonos, M Zinser, M Ziolkowski, G Zobernig, A Zoccoli, K Zoch, TG Zorbas, R Zou, M Zur Nedden, L Zwalinski, ATLAS Collaboration


Constraints on mediator-based dark matter and scalar dark energy models using s√ = 13 TeV pp collision data collected by the ATLAS detector

Journal of High Energy Physics Springer 2019 (2019) 142

BM Barnett, RM Barnett, Z Barnovska-Blenessy, JBG Da Costa, R Bartoldus, S Batlamous, JB Beacham, T Beau, C Becot, A Beddall, M Begel, A Behera, K Beloborodov, K Belotskiy, DP Benjamin, M Benoit, B Bergmann, LJ Bergsten, FU Bernlochner, T Berry, P Berta, A Bethani, S Bethke, D Biedermann

Constraints on selected mediator-based dark matter models and a scalar dark energy model using up to 37 fb−1s√ = 13 TeV pp collision data collected by the ATLAS detector at the LHC during 2015-2016 are summarised in this paper. The results of experimental searches in a variety of final states are interpreted in terms of a set of spin-1 and spin-0 single-mediator dark matter simplified models and a second set of models involving an extended Higgs sector plus an additional vector or pseudo-scalar mediator. The searches considered in this paper constrain spin-1 leptophobic and leptophilic mediators, spin-0 colour-neutral and colour-charged mediators and vector or pseudo-scalar mediators embedded in extended Higgs sector models. In this case, also s√ = 8 TeV pp collision data are used for the interpretation of the results. The results are also interpreted for the first time in terms of light scalar particles that could contribute to the accelerating expansion of the universe (dark energy).


ATLAS trigger and data acquisition upgrades for High Luminosity LHC

Proceedings of Science Part F128556 (2016)

W Balunas

© Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0). The ATLAS experiment at CERN is planning a second phase of upgrades to prepare for the High Luminosity LHC, due to start in 2026. In order to deliver an order of magnitude more data than previous runs, 14 TeV protons will collide with an instantaneous luminosity of 7.5 × 1034 cm-2s-1, resulting in much higher pileup and data rates than the current ATLAS detector was designed to handle. While this extreme scenario is essential to realize the physics program, it is a huge challenge for the detector subsystems, trigger, data acquisition and computing. The detector upgrades themselves also present new requirements and opportunities for the trigger and data acquisition system. Initial upgrade designs for the trigger and data acquisition system are presented, including the real time low latency hardware trigger, hardware-based tracking, the high throughput data acquisition system and the commodity hardware and software-based data handling and event filtering. The motivation, overall architecture and expected performance are explained. Some details of the key components are given. Open issues and plans are discussed.