Publications


T2K neutrino flux prediction

Physical Review D - Particles, Fields, Gravitation and Cosmology 87 (2013)

K Abe, N Abgrall, H Aihara, T Akiri, JB Albert, C Andreopoulos, S Aoki, A Ariga, T Ariga, S Assylbekov, D Autiero, M Barbi, GJ Barker, G Barr, M Bass, M Batkiewicz, F Bay, SW Bentham, V Berardi, BE Berger, S Berkman, I Bertram, D Beznosko, S Bhadra, FDM Blaszczyk, A Blondel, C Bojechko, S Boyd, A Bravar, C Bronner, DG Brook-Roberge, N Buchanan, RG Calland, J Caravaca Rodríguez, SL Cartwright, R Castillo, MG Catanesi, A Cervera, D Cherdack, G Christodoulou, A Clifton, J Coleman, SJ Coleman, G Collazuol, K Connolly, A Curioni, A Dabrowska, I Danko, R Das, S Davis, M Day, JPAM De André, P De Perio, G De Rosa, T Dealtry, C Densham, F Di Lodovico, S Di Luise, J Dobson, T Duboyski, F Dufour, J Dumarchez, S Dytman, M Dziewiecki, M Dziomba, S Emery, A Ereditato, L Escudero, LS Esposito, AJ Finch, E Frank, M Friend, Y Fujii, Y Fukuda, V Galymov, A Gaudin, S Giffin, C Giganti, K Gilje, T Golan, JJ Gomez-Cadenas, M Gonin, N Grant, D Gudin, P Guzowski, DR Hadley, A Haesler, MD Haigh, D Hansen, T Hara, M Hartz, T Hasegawa, NC Hastings, Y Hayato, C Hearty, RL Helmer, J Hignight, A Hillairet

The Tokai-to-Kamioka (T2K) experiment studies neutrino oscillations using an off-axis muon neutrino beam with a peak energy of about 0.6 GeV that originates at the Japan Proton Accelerator Research Complex accelerator facility. Interactions of the neutrinos are observed at near detectors placed at 280 m from the production target and at the far detector - Super-Kamiokande - located 295 km away. The flux prediction is an essential part of the successful prediction of neutrino interaction rates at the T2K detectors and is an important input to T2K neutrino oscillation and cross section measurements. A FLUKA and GEANT3-based simulation models the physical processes involved in the neutrino production, from the interaction of primary beam protons in the T2K target, to the decay of hadrons and muons that produce neutrinos. The simulation uses proton beam monitor measurements as inputs. The modeling of hadronic interactions is reweighted using thin target hadron production data, including recent charged pion and kaon measurements from the NA61/SHINE experiment. For the first T2K analyses the uncertainties on the flux prediction are evaluated to be below 15% near the flux peak. The uncertainty on the ratio of the flux predictions at the far and near detectors is less than 2% near the flux peak. © 2013 American Physical Society.


Electron neutrino and antineutrino appearance in the full MINOS data sample.

Phys Rev Lett 110 (2013) 171801-

P Adamson, I Anghel, C Backhouse, G Barr, M Bishai, A Blake, GJ Bock, D Bogert, SV Cao, D Cherdack, S Childress, JA Coelho, L Corwin, D Cronin-Hennessy, JK de Jong, AV Devan, NE Devenish, MV Diwan, CO Escobar, JJ Evans, E Falk, GJ Feldman, MV Frohne, HR Gallagher, RA Gomes, MC Goodman, P Gouffon, N Graf, R Gran, K Grzelak, A Habig, SR Hahn, J Hartnell, R Hatcher, A Himmel, A Holin, J Hylen, GM Irwin, Z Isvan, DE Jaffe, C James, D Jensen, T Kafka, SM Kasahara, G Koizumi, M Kordosky, A Kreymer, K Lang, J Ling, PJ Litchfield, P Lucas, WA Mann, ML Marshak, M Mathis, N Mayer, MM Medeiros, R Mehdiyev, JR Meier, MD Messier, DG Michael, WH Miller, SR Mishra, S Moed Sher, CD Moore, L Mualem, J Musser, D Naples, JK Nelson, HB Newman, RJ Nichol, JA Nowak, JP Ochoa-Ricoux, J O'Connor, WP Oliver, M Orchanian, RB Pahlka, J Paley, RB Patterson, G Pawloski, S Phan-Budd, RK Plunkett, X Qiu, A Radovic, B Rebel, C Rosenfeld, HA Rubin, MC Sanchez, J Schneps, A Schreckenberger, P Schreiner, R Sharma, A Sousa, N Tagg, RL Talaga, J Thomas, MA Thomson, G Tinti, R Toner, D Torretta, G Tzanakos, J Urheim, P Vahle, B Viren, A Weber, RC Webb, C White, L Whitehead, SG Wojcicki, T Yang, R Zwaska, MINOS Collaboration

We report on ν(e) and ν(e) appearance in ν(μ) and ν(μ) beams using the full MINOS data sample. The comparison of these ν(e) and ν(e) appearance data at a 735 km baseline with θ13 measurements by reactor experiments probes δ, the θ23 octant degeneracy, and the mass hierarchy. This analysis is the first use of this technique and includes the first accelerator long-baseline search for ν(μ) → ν(e). Our data disfavor 31% (5%) of the three-parameter space defined by δ, the octant of the θ23, and the mass hierarchy at the 68% (90%) C.L. We measure a value of 2sin(2)(2θ13)sin(2)(θ23) that is consistent with reactor experiments.


Measurement of neutrino oscillation parameters from muon neutrino disappearance with an off-axis beam

(2013)

T2K Collaboration


Measurement of the inclusive nu(mu) charged current cross section on carbon in the near detector of the T2K experiment

PHYSICAL REVIEW D 87 (2013) ARTN 092003

K Abe, N Abgrall, H Aihara, T Akiri, JB Albert, C Andreopoulos, S Aoki, A Ariga, T Ariga, S Assylbekov, D Autiero, M Barbi, GJ Barker, G Barr, M Bass, M Batkiewicz, F Bay, SW Bentham, V Berardi, BE Berger, S Berkman, I Bertram, D Beznosko, S Bhadra, FDM Blaszczyk, A Blondel, C Bojechko, S Boyd, D Brailsford, A Bravar, C Bronner, DG Brook-Roberge, N Buchanan, RG Calland, J Caravaca Rodriguez, SL Cartwright, R Castillo, MG Catanesi, A Cervera, D Cherdack, G Christodoulou, A Clifton, J Coleman, SJ Coleman, G Collazuol, K Connolly, L Cremonesi, A Curioni, A Dabrowska, I Danko, R Das, S Davis, M Day, JPAM de Andre, P de Perio, G De Rosa, T Dealtry, SR Dennis, C Densham, F Di Lodovico, S Di Luise, J Dobson, O Drapier, T Duboyski, F Dufour, J Dumarchez, S Dytman, M Dziewiecki, M Dziomba, S Emery, A Ereditato, L Escudero, AJ Finch, E Frank, M Friend, Y Fujii, Y Fukuda, AP Furmanski, V Galymov, A Gaudin, S Giffin, C Giganti, K Gilje, T Golan, JJ Gomez-Cadenas, M Gonin, N Grant, D Gudin, P Guzowski, DR Hadley, A Haesler, MD Haigh, P Hamilton, D Hansen, T Hara, M Hartz, T Hasegawa, NC Hastings, Y Hayato, C Hearty, RL Helmer, M Hierholzer, J Hignight, A Hillairet, A Himmel, T Hiraki, J Holeczek, S Horikawa, K Huang, AK Ichikawa, K Ieki, M Ieva, M Ikeda, J Imber, J Insler, TJ Irvine, T Ishida, T Ishii, SJ Ives, K Iyogi, A Izmaylov, A Jacob, B Jamieson, RA Johnson, JH Jo, P Jonsson, KK Joo, CK Jung, A Kaboth, H Kaji, T Kajita, H Kakuno, J Kameda, Y Kanazawa, D Karlen, I Karpikov, E Kearns, M Khabibullin, F Khanam, A Khotjantsev, D Kielczewska, T Kikawa, A Kilinski, JY Kim, J Kim, SB Kim, B Kirby, J Kisiel, P Kitching, T Kobayashi, G Kogan, A Kolaceke, A Konaka, LL Kormos, A Korzenev, K Koseki, Y Koshio, K Kowalik, I Kreslo, W Kropp, H Kubo, Y Kudenko, S Kumaratunga, R Kurjata, T Kutter, J Lagoda, K Laihem, A Laing, M Laveder, M Lawe, KP Lee, C Licciardi, IT Lim, T Lindner, C Lister, RP Litchfield, A Longhin, GD Lopez, L Ludovici, M Macaire, L Magaletti, K Mahn, M Malek, S Manly, A Marchionni, AD Marino, J Marteau, JF Martin, T Maruyama, J Marzec, P Masliah, EL Mathie, V Matveev, K Mavrokoridis, E Mazzucato, N McCauley, KS McFarland, C McGrew, T McLachlan, M Messina, C Metelko, M Mezzetto, P Mijakowski, CA Miller, A Minamino, O Mineev, S Mine, A Missert, M Miura, L Monfregola, S Moriyama, TA Mueller, A Murakami, M Murdoch, S Murphy, J Myslik, T Nagasaki, T Nakadaira, M Nakahata, T Nakai, K Nakajima, K Nakamura, S Nakayama, T Nakaya, K Nakayoshi, D Naples, TC Nicholls, C Nielsen, K Nishikawa, Y Nishimura, HM O'Keeffe, Y Obayashi, R Ohta, K Okumura, T Okusawa, W Oryszczak, SM Oser, M Otani, RA Owen, Y Oyama, MY Pac, V Palladino, V Paolone, D Payne, GF Pearce, O Perevozchikov, JD Perkin, ESP Guerra, P Plonski, E Poplawska, B Popov, M Posiadala, J-M Poutissou, R Poutissou, P Przewlocki, B Quilain, E Radicioni, PN Ratoff, M Ravonel, MAM Rayner, M Reeves, E Reinherz-Aronis, F Retiere, A Robert, PA Rodrigues, E Rondio, S Roth, A Rubbia, D Ruterbories, R Sacco, K Sakashita, F Sanchez, E Scantamburlo, K Scholberg, J Schwehr, M Scott, DI Scully, Y Seiya, T Sekiguchi, H Sekiya, D Sgalaberna, M Shibata, M Shiozawa, S Short, Y Shustrov, P Sinclair, B Smith, RJ Smith, M Smy, JT Sobczyk, H Sobel, M Sorel, L Southwell, P Stamoulis, J Steinmann, B Still, A Suzuki, K Suzuki, SY Suzuki, Y Suzuki, T Szeglowski, M Szeptycka, R Tacik, M Tada, S Takahashi, A Takeda, Y Takeuchi, HA Tanaka, MM Tanaka, M Tanaka, IJ Taylor, D Terhorst, R Terri, LF Thompson, A Thorley, S Tobayama, W Toki, T Tomura, Y Totsuka, C Touramanis, T Tsukamoto, M Tzanov, Y Uchida, K Ueno, A Vacheret, M Vagins, G Vasseur, T Wachala, AV Waldron, CW Walter, J Wang, D Wark, MO Wascko, A Weber, R Wendell, RJ Wilkes, MJ Wilking, C Wilkinson, Z Williamson, JR Wilson, RJ Wilson, T Wongjirad, Y Yamada, K Yamamoto, C Yanagisawa, S Yen, N Yershov, M Yokoyama, T Yuan, A Zalewska, L Zambelli, K Zaremba, M Ziembicki, ED Zimmerman, M Zito, J Zmuda, T Collaboration


Measurement of neutrino and antineutrino oscillations using beam and atmospheric data in MINOS

Physical Review Letters 110 (2013)

P Adamson, I Anghel, C Backhouse, G Barr, M Bishai, A Blake, GJ Bock, D Bogert, SV Cao, CM Castromonte, S Childress, JAB Coelho, L Corwin, D Cronin-Hennessy, JK De Jong, AV Devan, NE Devenish, MV Diwan, CO Escobar, JJ Evans, E Falk, GJ Feldman, MV Frohne, HR Gallagher, RA Gomes, MC Goodman, P Gouffon, N Graf, R Gran, K Grzelak, A Habig, SR Hahn, J Hartnell, R Hatcher, A Himmel, A Holin, J Hylen, GM Irwin, Z Isvan, C James, D Jensen, T Kafka, SMS Kasahara, G Koizumi, M Kordosky, A Kreymer, K Lang, J Ling, PJ Litchfield, P Lucas, WA Mann, ML Marshak, M Mathis, N Mayer, AM McGowan, MM Medeiros, R Mehdiyev, JR Meier, MD Messier, DG Michael, WH Miller, SR Mishra, S Moed Sher, CD Moore, L Mualem, J Musser, D Naples, JK Nelson, HB Newman, RJ Nichol, JA Nowak, J O'Connor, WP Oliver, M Orchanian, RB Pahlka, J Paley, RB Patterson, G Pawloski, S Phan-Budd, RK Plunkett, X Qiu, A Radovic, B Rebel, C Rosenfeld, HA Rubin, MC Sanchez, J Schneps, A Schreckenberger, P Schreiner, R Sharma, A Sousa

We report measurements of oscillation parameters from νμ and ν̄μ disappearance using beam and atmospheric data from MINOS. The data comprise exposures of 10.71×1020 protons on target in the νμ-dominated beam, 3.36×1020 protons on target in the ν̄μ-enhanced beam, and 37.88 kton yr of atmospheric neutrinos. Assuming identical ν and ν̄ oscillation parameters, we measure |Δm2|=(2.41-0.10+0.09)×10-3 eV2 and sinâ¡2(2θ)=0.950-0.036+0.035. Allowing independent ν and ν̄ oscillations, we measure antineutrino parameters of |Δm̄2|=(2.50-0.25+0.23)×10-3 eV2 and sinâ¡2(2θ̄)=0.97-0.08+0.03, with minimal change to the neutrino parameters. © 2013 American Physical Society.


Publisher's Note: T2K neutrino flux prediction

Physical Review D - Particles, Fields, Gravitation and Cosmology 87 (2013)

K Abe, N Abgrall, H Aihara, T Akiri, JB Albert, C Andreopoulos, S Aoki, A Ariga, T Ariga, S Assylbekov, D Autiero, M Barbi, GJ Barker, G Barr, M Bass, M Batkiewicz, F Bay, SW Bentham, V Berardi, BE Berger, S Berkman, I Bertram, D Beznosko, S Bhadra, FDM Blaszczyk, A Blondel, C Bojechko, S Boyd, A Bravar, C Bronner, DG Brook-Roberge, N Buchanan, RG Calland, J Caravaca Rodriguez, SL Cartwright, R Castillo, MG Catanesi, A Cervera, D Cherdack, G Christodoulou, A Clifton, J Coleman, SJ Coleman, G Collazuol, K Connolly, A Curioni, A Dabrowska, I Danko, R Das, S Davis, M Day, JPAM De Andre, P De Perio, G De Rosa, T Dealtry, C Densham, F Di Lodovico, S Di Luise, J Dobson, T Duboyski, F Dufour, J Dumarchez, S Dytman, M Dziewiecki, M Dziomba, S Emery, A Ereditato, L Escudero, LS Esposito, AJ Finch, E Frank, M Friend, Y Fujii, Y Fukuda, V Galymov, A Gaudin, S Giffin, C Giganti, K Gilje, T Golan, JJ Gomez-Cadenas, M Gonin, N Grant, D Gudin, P Guzowski, DR Hadley, A Haesler, MD Haigh, D Hansen, T Hara, M Hartz, T Hasegawa, NC Hastings, Y Hayato, C Hearty, RL Helmer, J Hignight, A Hillairet, A Himmel, T Hiraki


Low Background Anti-neutrino Monitoring with an Innovative Composite Solid Scintillator Detector

2013 IEEE NUCLEAR SCIENCE SYMPOSIUM AND MEDICAL IMAGING CONFERENCE (NSS/MIC) (2013)

R Scovell, A Vacheret, A Baird, N Ryder, A Weber, Y Shitov, B Coupe, S Kachelva, E Koonen, AS Cucoanes, M Fallot, F Yermia, B Freret, P Signorotti, IEEE


Performance of a Prototype Large Area Neutron Detector Based on (LiF)-Li-6:ZnS(Ag) with MPPC Read-out

2013 IEEE NUCLEAR SCIENCE SYMPOSIUM AND MEDICAL IMAGING CONFERENCE (NSS/MIC) (2013)

A Vacheret, PR Scovell, M Haigh, Y Shitov, A Waldron, A Weber, A Giudicelli, A Fierfort, IEEE


Inclusive production of protons, anti-protons, neutrons, deuterons and tritons in p+C collisions at 158 GeV/c beam momentum

European Physical Journal C 73 (2013) 1-66

B Baatar, G Barr, J Bartke, L Betev, O Chvala, J Dolejsi, V Eckardt, HG Fischer, Z Fodor, A Karev, V Kolesnikov, M Kowalski, M Makariev, A Malakhov, M Mateev, G Melkumov, A Rybicki, N Schmitz, P Seyboth, R Stock, G Tinti, D Varga, G Vesztergombi, S Wenig

The production of protons, anti-protons, neutrons, deuterons and tritons in minimum bias p+C interactions is studied using a sample of 385 734 inelastic events obtained with the NA49 detector at the CERN SPS at 158 GeV/c beam momentum. The data cover a phase space area ranging from 0 to 1.9 GeV/c in transverse momentum and in Feynman x from -0.8 to 0.95 for protons, from -0.2 to 0.3 for anti-protons and from 0.1 to 0.95 for neutrons. Existing data in the far backward hemisphere are used to extend the coverage for protons and light nuclear fragments into the region of intra-nuclear cascading. The use of corresponding data sets obtained in hadron-proton collisions with the same detector allows for the detailed analysis and model-independent separation of the three principle components of hadronization in p+C interactions, namely projectile fragmentation, target fragmentation of participant nucleons and intra-nuclear cascading. © 2013 The Author(s).


Search for flavor-changing non-standard neutrino interactions by MINOS

Physical Review D - Particles, Fields, Gravitation and Cosmology 88 (2013)

P Adamson, G Barr, M Bishai, A Blake, GJ Bock, D Bogert, SV Cao, D Cherdack, S Childress, JAB Coelho, L Corwin, D Cronin-Hennessy, JK De Jong, AV Devan, NE Devenish, MV Diwan, CO Escobar, JJ Evans, E Falk, GJ Feldman, MV Frohne, HR Gallagher, RA Gomes, MC Goodman, P Gouffon, N Graf, R Gran, K Grzelak, A Habig, J Hartnell, R Hatcher, A Himmel, A Holin, J Hylen, GM Irwin, Z Isvan, C James, D Jensen, T Kafka, SMS Kasahara, G Koizumi, M Kordosky, A Kreymer, K Lang, J Ling, PJ Litchfield, P Lucas, WA Mann, ML Marshak, M Mathis, N Mayer, MM Medeiros, R Mehdiyev, JR Meier, MD Messier, WH Miller, SR Mishra, S Moed Sher, CD Moore, L Mualem, S Mufson, J Musser, D Naples, JK Nelson, HB Newman, RJ Nichol, JA Nowak, WP Oliver, M Orchanian, RB Pahlka, J Paley, RB Patterson, G Pawloski, S Phan-Budd, RK Plunkett, X Qiu, A Radovic, B Rebel, C Rosenfeld, HA Rubin, MC Sanchez, J Schneps, A Schreckenberger, P Schreiner, R Sharma, A Sousa, N Tagg, RL Talaga, J Thomas, MA Thomson, R Toner

We report new constraints on flavor-changing non-standard neutrino interactions from the MINOS experiment, in which neutrino versus antineutrino interactions can be distinguished on an event-by-event basis. We analyzed a combined set of beam neutrino and antineutrino data from the well-understood NuMI beam, and found no evidence for deviations from standard neutrino mixing. The observed energy spectra constrain the non-standard neutrino interactions parameter to the range -0.20<εμτ<0.07(90%C.L.). © 2013 American Physical Society.


Comparisons of annual modulations in MINOS with the event rate modulation in CoGeNT

Physical Review D - Particles, Fields, Gravitation and Cosmology 87 (2013)

P Adamson, I Anghel, G Barr, M Bishai, A Blake, GJ Bock, D Bogert, SV Cao, S Childress, JAB Coelho, L Corwin, D Cronin-Hennessy, JK De Jong, AV Devan, NE Devenish, MV Diwan, CO Escobar, JJ Evans, E Falk, GJ Feldman, MV Frohne, HR Gallagher, RA Gomes, MC Goodman, P Gouffon, N Graf, R Gran, K Grzelak, A Habig, J Hartnell, R Hatcher, A Himmel, A Holin, J Hylen, GM Irwin, Z Isvan, DE Jaffe, C James, D Jensen, T Kafka, SMS Kasahara, G Koizumi, S Kopp, M Kordosky, A Kreymer, K Lang, J Ling, PJ Litchfield, P Lucas, WA Mann, ML Marshak, M Mathis, N Mayer, AM McGowan, MM Medeiros, R Mehdiyev, JR Meier, MD Messier, WH Miller, SR Mishra, S Moed Sher, CD Moore, L Mualem, J Musser, D Naples, JK Nelson, HB Newman, RJ Nichol, JA Nowak, J O'Connor, WP Oliver, M Orchanian, RB Pahlka, J Paley, RB Patterson, G Pawloski, S Phan-Budd, RK Plunkett, X Qiu, A Radovic, B Rebel, C Rosenfeld, HA Rubin, MC Sanchez, J Schneps, A Schreckenberger, P Schreiner, R Sharma, A Sousa, N Tagg, RL Talaga

The CoGeNT Collaboration has recently published results from a fifteen month data set which indicate an annual modulation in the event rate similar to what is expected from weakly interacting massive particle interactions. It has been suggested that the CoGeNT modulation may actually be caused by other annually modulating phenomena, specifically the flux of atmospheric muons underground or the radon level in the laboratory. We have compared the phase of the CoGeNT data modulation to that of the concurrent atmospheric muon and radon data collected by the MINOS experiment which occupies an adjacent experimental hall in the Soudan Underground Laboratory. The results presented are obtained by performing a shape-free χ2 data-to-data comparison and from a simultaneous fit of the MINOS and CoGeNT data to phase-shifted sinusoidal functions. Both tests indicate that the phase of the CoGeNT modulation is inconsistent with the phases of the MINOS muon and radon modulations at the 3.0σ level. © 2013 American Physical Society.


The electromagnetic calorimeter for the T2K near detector ND280

Journal of Instrumentation 8 (2013)

D Allan, C Andreopoulos, C Angelsen, GJ Barker, G Barr, S Bentham, I Bertram, S Boyd, K Briggs, RG Calland, J Carroll, SL Cartwright, A Carver, C Chavez, G Christodoulou, J Coleman, P Cooke, G Davies, C Densham, F Di Lodovico, J Dobson, T Duboyski, T Durkin, DL Evans, A Finch, M Fitton, FC Gannaway, A Grant, N Grant, S Grenwood, P Guzowski, D Hadley, M Haigh, PF Harrison, A Hatzikoutelis, TDJ Haycock, A Hyndman, J Ilic, S Ives, AC Kaboth, V Kasey, L Kellet, M Khaleeq, G Kogan, LL Kormos, M Lawe, TB Lawson, C Lister, RP Litchfield, M Lockwood, M Malek, T Maryon, P Masliah, K Mavrokoridis, N McCauley, I Mercer, C Metelko, B Morgan, J Morris, A Muir, M Murdoch, T Nicholls, M Noy, HM O'Keeffe, RA Owen, D Payne, GF Pearce, JD Perkin, E Poplawska, R Preece, W Qian, P Ratoff, T Raufer, M Raymond, M Reeves, D Richards, M Rooney, R Sacco, S Sadler, P Schaack, M Scott, DI Scully, S Short, M Siyad, R Smith, B Still, P Sutcliffe, IJ Taylor, R Terri, LF Thompson, A Thorley, M Thorpe, C Timis, C Touramanis, MA Uchida, Y Uchida, A Vacheret, JF Van Schalkwyk, O Veledar, AV Waldron

The T2K experiment studies oscillations of an off-axis muon neutrino beam between the J-PARC accelerator complex and the Super-Kamiokande detector. Special emphasis is placed on measuring the mixing angle θ 13 by observing νe appearance via the sub-dominant νμ νe oscillation and searching for CP violation in the lepton sector. The experiment includes a sophisticated, off-axis, near detector, the ND280, situated 280 m downstream of the neutrino production target in order to measure the properties of the neutrino beam and to understand better neutrino interactions at the energy scale below a few GeV. The data collected with the ND280 are used to study charged- and neutral-current neutrino interaction rates and kinematics prior to oscillation, in order to reduce uncertainties in the oscillation measurements by the far detector. A key element of the near detector is the ND280 electromagnetic calorimeter (ECal), consisting of active scintillator bars sandwiched between lead sheets and read out with multi-pixel photon counters (MPPCs). The ECal is vital to the reconstruction of neutral particles, and the identification of charged particle species. The ECal surrounds the Pi-0 detector (PØD) and the tracking region of the ND280, and is enclosed in the former UA1/NOMAD dipole magnet. This paper describes the design, construction and assembly of the ECal, as well as the materials from which it is composed. The electronic and data acquisition (DAQ) systems are discussed, and performance of the ECal modules, as deduced from measurements with particle beams, cosmic rays, the calibration system, and T2K data, is described.© 2013 IOP Publishing Ltd and Sissa Medialab srl.


Evidence of electron neutrino appearance in a muon neutrino beam

PHYSICAL REVIEW D 88 (2013) ARTN 032002

K4 Abe, N1 Abgrall, H4 Aihara, T1 Akiri, JB1 Albert, C4 Andreopoulos, S2 Aoki, A0 Ariga, T0 Ariga, S0 Assylbekov, D3 Autiero, M3 Barbi, GJ5 Barker, G3 Barr, M0 Bass, M1 Batkiewicz, F1 Bay, SW2 Bentham, V2 Berardi, BE0 Berger, S0 Berkman, I2 Bertram, D3 Beznosko, S5 Bhadra, FDM2 Blaszczyk, A1 Blondel, C5 Bojechko, S5 Boyd, D1 Brailsford, A1 Bravar, C2 Bronner, DG0 Brook-Roberge, N0 Buchanan, RG2 Calland, JC1 Rodriguez, SL4 Cartwright, R1 Castillo, MG2 Catanesi, A1 Cervera, D0 Cherdack, G2 Christodoulou, A0 Clifton, J2 Coleman, SJ0 Coleman, G2 Collazuol, K5 Connolly, L3 Cremonesi, A1 Curioni, A1 Dabrowska, I3 Danko, R0 Das, S5 Davis, M4 Day, JPAM1 de Andre, P4 de Perio, G2 De Rosa, DT4 35, DS5 45, C4 Densham, F3 Di Lodovico, S1 Di Luise, J1 Dobson, O1 Drapier, T3 Duboyski, F1 Dufour, J3 Dumarchez, S3 Dytman, M5 Dziewiecki, M5 Dziomba, S0 Emery, A0 Ereditato, L1 Escudero, AJ2 Finch, E0 Frank, M1 Friend, Y1 Fujii, Y3 Fukuda, A5 Furmanski, V0 Galymov, A5 Gaudin, S3 Giffin, C3 Giganti, K3 Gilje, T5 Golan, JJ1 Gomez-Cadenas, M1 Gonin, N2 Grant, D2 Gudin, DR5 Hadley, A1 Haesler, MD5 Haigh, P1 Hamilton, D3 Hansen, T2 Hara, HM5 49, T1 Hasegawa, NC3 Hastings, Y4 Hayato, C0 Hearty, RL5 Helmer, M0 Hierholzer, J3 Hignight, A5 Hillairet, A1 Himmel, T2 Hiraki, S2 Hirota, J4 Holeczek, S1 Horikawa, K2 Huang, AK2 Ichikawa, K2 Ieki, M1 Ieva, M2 Ikeda, J3 Imber, J2 Insler, TJ4 Irvine, T1 Ishida, T1 Ishii, SJ1 Ives, K4 Iyogi, IA2 18, A3 Jacob, B5 Jamieson, RA0 Johnson, JH3 Jo, P1 Jonsson, KK0 Joo, CK3 Jung, A1 Kaboth, H4 Kaji, T4 Kajita, H4 Kakuno, J4 Kameda, Y4 Kanazawa, KD5 50, I2 Karpikov, E0 Kearns, M2 Khabibullin, F0 Khanam, A2 Khotjantsev, D5 Kielczewska, T2 Kikawa, A3 Kilinski, JY0 Kim, J0 Kim, SB4 Kim, B0 Kirby, J4 Kisiel, P0 Kitching, T1 Kobayashi, G1 Kogan, A3 Kolaceke, A5 Konaka, LL2 Kormos, A1 Korzenev, K1 Koseki, Y4 Koshio, K3 Kowalik, I0 Kreslo, W0 Kropp, H2 Kubo, Y2 Kudenko, S5 Kumaratunga, R5 Kurjata, T2 Kutter, J3 Lagoda, K4 Laihem, A4 Laing, M2 Laveder, M4 Lawe, M2 Lazos, KP4 Lee, C3 Licciardi, IT0 Lim, T5 Lindner, C5 Lister, LRP5 26, A2 Longhin, GD3 Lopez, L2 Ludovici, M0 Macaire, L2 Magaletti, K5 Mahn, M1 Malek, S4 Manly, A1 Marchionni, AD0 Marino, J3 Marteau, JF4 Martin, T1 Maruyama, J5 Marzec, P1 Masliah, EL3 Mathie, V2 Matveev, K2 Mavrokoridis, E0 Mazzucato, N2 McCauley, KS4 McFarland, C3 McGrew, T4 McLachlan, M0 Messina, C4 Metelko, M2 Mezzetto, P3 Mijakowski, CA5 Miller, A2 Minamino, O2 Mineev, S0 Mine, A0 Missert, M4 Miura, L1 Monfregola, S4 Moriyama, TA1 Mueller, A2 Murakami, M2 Murdoch, MS1 14, J5 Myslik, T2 Nagasaki, T1 Nakadaira, M4 Nakahata, T3 Nakai, K3 Nakajima, K1 Nakamura, S4 Nakayama, T2 Nakaya, K1 Nakayoshi, D3 Naples, TC4 Nicholls, C0 Nielsen, M0 Nirkko, K1 Nishikawa, Y4 Nishimura, HM3 O'Keeffe, Y4 Obayashi, R1 Ohta, K4 Okumura, T3 Okusawa, W5 Oryszczak, SM0 Oser, M2 Otani, RA3 Owen, Y1 Oyama, MY1 Pac, V2 Palladino, V3 Paolone, D2 Payne, GF4 Pearce, O2 Perevozchikov, JD4 Perkin, Y0 Petrov, ESP5 Guerra, P5 Plonski, E3 Poplawska, B3 Popov, M5 Posiadala, J-M5 Poutissou, R5 Poutissou, P3 Przewlocki, B1 Quilain, E2 Radicioni, PN2 Ratoff, M1 Ravonel, MAM1 Rayner, M2 Reeves, E0 Reinherz-Aronis, F5 Retiere, A3 Robert, PA4 Rodrigues, E3 Rondio, S4 Roth, A1 Rubbia, D0 Ruterbories, R3 Sacco, K1 Sakashita, F1 Sanchez, E1 Scantamburlo, K1 Scholberg, J0 Schwehr, M1 Scott, DI5 Scully, Y3 Seiya, T1 Sekiguchi, H4 Sekiya, D1 Sgalaberna, M1 Shibata, M4 Shiozawa, S1 Short, Y2 Shustrov, P1 Sinclair, B1 Smith, RJ3 Smith, M0 Smy, JT5 Sobczyk, H0 Sobel, M1 Sorel, L2 Southwell, P1 Stamoulis, J4 Steinmann, B3 Still, A2 Suzuki, K2 Suzuki, SY1 Suzuki, Y4 Suzuki, T4 Szeglowski, M3 Szeptycka, TR3 50, M1 Tada, S2 Takahashi, A4 Takeda, Y2 Takeuchi, HA0 Tanaka, MM1 Tanaka, M1 Tanaka, IJ3 Taylor, D4 Terhorst, R3 Terri, LF4 Thompson, A2 Thorley, S0 Tobayama, W0 Toki, T4 Tomura, YA Totsuka, C2 Touramanis, T1 Tsukamoto, M2 Tzanov, Y1 Uchida, K4 Ueno, A3 Vacheret, M0 Vagins, G0 Vasseur, T0 Wachala, AV3 Waldron, CW1 Walter, WD4 19, MO1 Wascko, WA4 35, R4 Wendell, RJ5 Wilkes, MJ5 Wilking, C4 Wilkinson, Z3 Williamson, JR3 Wilson, RJ0 Wilson, T1 Wongjirad, Y1 Yamada, K3 Yamamoto, C3 Yanagisawa, S5 Yen, N2 Yershov, M4 Yokoyama, T0 Yuan, A1 Zalewska, L3 Zambelli, K5 Zaremba, M5 Ziembicki, ED0 Zimmerman, M0 Zito, J5 Zmuda, T Collaboration


Search for Lorentz invariance and CPT violation with muon antineutrinos in the MINOS Near Detector

PHYSICAL REVIEW D 85 (2012) ARTN 031101

P Adamson, DS Ayres, G Barr, M Bishai, A Blake, GJ Bock, DJ Boehnlein, D Bogert, SV Cao, S Cavanaugh, S Childress, JAB Coelho, L Corwin, D Cronin-Hennessy, IZ Danko, JK de Jong, NE Devenish, MV Diwan, CO Escobar, JJ Evans, E Falk, GJ Feldman, MV Frohne, HR Gallagher, RA Gomes, MC Goodman, P Gouffon, N Graf, R Gran, K Grzelak, A Habig, J Hartnell, R Hatcher, A Himmel, A Holin, J Hylen, GM Irwin, Z Isvan, C James, D Jensen, T Kafka, SMS Kasahara, G Koizumi, S Kopp, M Kordosky, A Kreymer, K Lang, J Ling, PJ Litchfield, L Loiacono, P Lucas, WA Mann, ML Marshak, M Mathis, N Mayer, R Mehdiyev, JR Meier, MD Messier, WH Miller, SR Mishra, J Mitchell, CD Moore, L Mualem, S Mufson, J Musser, D Naples, JK Nelson, HB Newman, RJ Nichol, JA Nowak, WP Oliver, M Orchanian, RB Pahlka, J Paley, RB Patterson, G Pawloski, S Phan-Budd, RK Plunkett, X Qiu, A Radovic, J Ratchford, B Rebel, C Rosenfeld, HA Rubin, MC Sanchez, J Schneps, A Schreckenberger, P Schreiner, R Sharma, A Sousa, M Strait, N Tagg, RL Talaga, J Thomas, MA Thomson, G Tinti, R Toner, D Torretta, G Tzanakos, J Urheim, P Vahle, B Viren, JJ Walding, A Weber, RC Webb, C White, L Whitehead, SG Wojcicki, R Zwaska, MINOS Collaboration


New measurements of the transverse beam asymmetry for elastic electron scattering from selected nuclei

Physical Review Letters 109 (2012)

S Abrahamyan, A Acha, A Afanasev, Z Ahmed, H Albataineh, K Aniol, DS Armstrong, W Armstrong, J Arrington, T Averett, B Babineau, SL Bailey, J Barber, A Barbieri, A Beck, V Bellini, R Beminiwattha, H Benaoum, J Benesch, F Benmokhtar, P Bertin, T Bielarski, W Boeglin, P Bosted, F Butaru, E Burtin, J Cahoon, A Camsonne, M Canan, P Carter, CC Chang, GD Cates, YC Chao, C Chen, JP Chen, S Choi, E Chudakov, E Cisbani, B Craver, F Cusanno, MM Dalton, R De Leo, K De Jager, W Deconinck, P Decowski, D Deepa, X Deng, A Deur, D Dutta, A Etile, C Ferdi, RJ Feuerbach, JM Finn, D Flay, GB Franklin, M Friend, S Frullani, E Fuchey, SA Fuchs, K Fuoti, F Garibaldi, E Gasser, R Gilman, A Giusa, A Glamazdin, LE Glesener, J Gomez, M Gorchtein, J Grames, K Grimm, C Gu, O Hansen, J Hansknecht, O Hen, DW Higinbotham, RS Holmes, T Holmstrom, CJ Horowitz, J Hoskins, J Huang, TB Humensky, CE Hyde, H Ibrahim, F Itard, CM Jen, E Jensen, X Jiang, G Jin, S Johnston, J Katich

We have measured the beam-normal single-spin asymmetry A n in the elastic scattering of 1-3 GeV transversely polarized electrons from H1 and for the first time from He4, C12, and Pb208. For H1, He4, and C12, the measurements are in agreement with calculations that relate A n to the imaginary part of the two-photon exchange amplitude including inelastic intermediate states. Surprisingly, the Pb208 result is significantly smaller than the corresponding prediction using the same formalism. These results suggest that a systematic set of new A n measurements might emerge as a new and sensitive probe of the structure of heavy nuclei. © 2012 American Physical Society.


Measurements of the T2K neutrino beam properties using the INGRID on-axis near detector

Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 694 (2012) 211-223

K Abe, N Abgrall, Y Ajima, H Aihara, JB Albert, C Andreopoulos, B Andrieu, MD Anerella, S Aoki, O Araoka, J Argyriades, A Ariga, T Ariga, S Assylbekov, D Autiero, A Badertscher, M Barbi, GJ Barker, G Barr, M Bass, M Batkiewicz, F Bay, S Bentham, V Berardi, BE Berger, I Bertram, M Besnier, J Beucher, D Beznosko, S Bhadra, FDM Blaszczyk, J Blocki, A Blondel, C Bojechko, J Bouchez, SB Boyd, A Bravar, C Bronner, DG Brook-Roberge, N Buchanan, H Budd, D Calvet, SL Cartwright, A Carver, R Castillo, MG Catanesi, A Cazes, A Cervera, C Chavez, S Choi, G Christodoulou, J Coleman, G Collazuol, W Coleman, K Connolly, A Curioni, A Dabrowska, I Danko, R Das, GS Davies, S Davis, M Day, G De Rosa, JPAM De André, P De Perio, T Dealtry, A Delbart, C Densham, F Di Lodovico, S Di Luise, P Dinh Tran, J Dobson, U Dore, O Drapier, F Dufour, J Dumarchez, S Dytman, M Dziewiecki, M Dziomba, S Emery, A Ereditato, JE Escallier, L Escudero, LS Esposito, M Fechner, A Ferrero, AJ Finch, E Frank, Y Fujii, Y Fukuda, V Galymov, GL Ganetis, FC Gannaway, A Gaudin, A Gendotti, M George, S Giffin, C Giganti

Precise measurement of neutrino beam direction and intensity was achieved based on a new concept with modularized neutrino detectors. INGRID (Interactive Neutrino GRID) is an on-axis near detector for the T2K long baseline neutrino oscillation experiment. INGRID consists of 16 identical modules arranged in horizontal and vertical arrays around the beam center. The module has a sandwich structure of iron target plates and scintillator trackers. INGRID directly monitors the muon neutrino beam profile center and intensity using the number of observed neutrino events in each module. The neutrino beam direction is measured with accuracy better than 0.4 mrad from the measured profile center. The normalized event rate is measured with 4% precision. © 2012 Elsevier B.V. All rights reserved.


T2K: A LONG-BASELINE EXPERIMENT TO STUDY NEUTRINOS

MODERN PHYSICS LETTERS A 27 (2012) ARTN 1230017

A Weber


Combining neutrino oscillation experiments with the Feldman-Cousins method

New Journal of Physics 14 (2012)

AV Waldron, MD Haigh, A Weber

In this paper we describe how two or more experimental results can be combined within the procedure of Feldman and Cousins, to provide combined confidence limits on the physical parameters of interest. We demonstrate the technique by combining the recent electron neutrino appearance results from T2K and MINOS. Our best fit point is sin 2 2θ 13 = 0.08 (0.11) and δ = 1.1 (2.0)π; in addition we exclude sin2 2θ 13 = 0 at 2.7σ (2.8σ) for the normal (inverted) neutrino mass hierarchy. © IOP Publishing Ltd and Deutsche Physikalische Gesellschaft.


First muon-neutrino disappearance study with an off-axis beam

PHYSICAL REVIEW D 85 (2012) ARTN 031103

K Abe, N Abgrall, Y Ajima, H Aihara, JB Albert, C Andreopoulos, B Andrieu, MD Anerella, S Aoki, O Araoka, J Argyriades, A Ariga, T Ariga, S Assylbekov, D Autiero, A Badertscher, M Barbi, GJ Barker, G Barr, M Bass, M Batkiewicz, F Bay, S Bentham, V Berardi, BE Berger, I Bertram, M Besnier, J Beucher, D Beznosko, S Bhadra, FDMM Blaszczyk, A Blondel, C Bojechko, J Bouchez, SB Boyd, A Bravar, C Bronner, DG Brook-Roberge, N Buchanan, H Budd, RG Calland, D Calvet, J Caravaca Rodriguez, SL Cartwright, A Carver, R Castillo, MG Catanesi, A Cazes, A Cervera, C Chavez, S Choi, G Christodoulou, J Coleman, G Collazuol, W Coleman, K Connolly, A Curioni, A Dabrowska, I Danko, R Das, GS Davies, S Davis, M Day, G De Rosa, JPAM de Andre, P de Perio, T Dealtry, A Delbart, C Densham, F Di Lodovico, S Di Luise, PD Tran, J Dobson, U Dore, O Drapier, T Duboyski, F Dufour, J Dumarchez, S Dytman, M Dziewiecki, M Dziomba, S Emery, A Ereditato, JE Escallier, L Escudero, LS Esposito, M Fechner, A Ferrero, AJ Finch, E Frank, Y Fujii, Y Fukuda, V Galymov, GL Ganetis, FC Gannaway, A Gaudin, A Gendotti, MA George, S Giffin, C Giganti, K Gilje, AK Ghosh, T Golan, M Goldhaber, JJ Gomez-Cadenas, S Gomi, M Gonin, N Grant, A Grant, P Gumplinger, P Guzowski, DR Hadley, A Haesler, MD Haigh, K Hamano, C Hansen, D Hansen, T Hara, PF Harrison, B Hartfiel, M Hartz, T Haruyama, T Hasegawa, NC Hastings, A Hatzikoutelis, K Hayashi, Y Hayato, C Hearty, RL Helmer, R Henderson, N Higashi, J Hignight, A Hillairet, T Hiraki, E Hirose, J Holeczek, S Horikawa, K Huang, A Hyndman, AK Ichikawa, K Ieki, M Ieva, M Iida, M Ikeda, J Ilic, J Imber, T Ishida, C Ishihara, T Ishii, SJ Ives, M Iwasaki, K Iyogi, A Izmaylov, B Jamieson, RA Johnson, KK Joo, GV Jover-Manas, CK Jung, H Kaji, T Kajita, H Kakuno, J Kameda, K Kaneyuki, D Karlen, K Kasami, I Kato, H Kawamuko, E Kearns, M Khabibullin, F Khanam, A Khotjantsev, D Kielczewska, T Kikawa, J Kim, JY Kim, SB Kim, N Kimura, B Kirby, J Kisiel, P Kitching, T Kobayashi, G Kogan, S Koike, A Konaka, LL Kormos, A Korzenev, K Koseki, Y Koshio, Y Kouzuma, K Kowalik, V Kravtsov, I Kreslo, W Kropp, H Kubo, J Kubota, Y Kudenko, N Kulkarni, Y Kurimoto, R Kurjata, T Kutter, J Lagoda, K Laihem, M Laveder, M Lawe, KP Lee, PT Le, JM Levy, C Licciardi, IT Lim, T Lindner, C Lister, RP Litchfield, M Litos, A Longhin, GD Lopez, PF Loverre, L Ludovici, T Lux, M Macaire, L Magaletti, K Mahn, Y Makida, M Malek, S Manly, A Marchionni, AD Marino, AJ Marone, J Marteau, JF Martin, T Maruyama, T Maryon, J Marzec, P Masliah, EL Mathie, C Matsumura, K Matsuoka, V Matveev, K Mavrokoridis, E Mazzucato, N McCauley, KS McFarland, C McGrew, T McLachlan, M Messina, W Metcalf, C Metelko, M Mezzetto, P Mijakowski, CA Miller, A Minamino, O Mineev, S Mine, AD Missert, G Mituka, M Miura, K Mizouchi, L Monfregola, F Moreau, B Morgan, S Moriyama, A Muir, A Murakami, JF Muratore, M Murdoch, S Murphy, J Myslik, N Nagai, T Nakadaira, M Nakahata, T Nakai, K Nakajima, T Nakamoto, K Nakamura, S Nakayama, T Nakaya, D Naples, ML Navin, TC Nicholls, B Nielsen, C Nielsen, K Nishikawa, H Nishino, K Nitta, T Nobuhara, JA Nowak, Y Obayashi, T Ogitsu, H Ohhata, T Okamura, K Okumura, T Okusawa, SM Oser, M Otani, RA Owen, Y Oyama, T Ozaki, MY Pac, V Palladino, V Paolone, P Paul, D Payne, GF Pearce, JD Perkin, V Pettinacci, F Pierre, E Poplawska, B Popov, M Posiadala, J-M Poutissou, R Poutissou, P Przewlocki, W Qian, JL Raaf, E Radicioni, PN Ratoff, TM Raufer, M Ravonel, M Raymond, M Reeves, F Retiere, A Robert, PA Rodrigues, E Rondio, JM Roney, B Rossi, S Roth, A Rubbia, D Ruterbories, S Sabouri, R Sacco, K Sakashita, F Sanchez, A Sarrat, K Sasaki, K Scholberg, J Schwehr, M Scott, DI Scully, Y Seiya, T Sekiguchi, H Sekiya, M Shibata, Y Shimizu, M Shiozawa, S Short, PD Sinclair, M Siyad, BM Smith, RJ Smith, M Smy, JT Sobczyk, H Sobel, M Sorel, A Stahl, P Stamoulis, J Steinmann, B Still, J Stone, C Strabel, R Sulej, A Suzuki, K Suzuki, S Suzuki, SY Suzuki, Y Suzuki, Y Suzuki, T Szeglowski, M Szeptycka, R Tacik, M Tada, M Taguchi, S Takahashi, A Takeda, Y Takenaga, Y Takeuchi, K Tanaka, HA Tanaka, M Tanaka, MM Tanaka, N Tanimoto, K Tashiro, I Taylor, A Terashima, D Terhorst, R Terri, LF Thompson, A Thorley, W Toki, S Tobayama, T Tomaru, Y Totsuka, C Touramanis, T Tsukamoto, M Tzanov, Y Uchida, K Ueno, A Vacheret, M Vagins, G Vasseur, O Veledar, T Wachala, JJ Walding, AV Waldron, CW Walter, PJ Wanderer, J Wang, MA Ward, GP Ward, D Wark, MO Wascko, A Weber, R Wendell, N West, LH Whitehead, G Wikstroem, RJ Wilkes, MJ Wilking, Z Williamson, JR Wilson, RJ Wilson, T Wongjirad, S Yamada, Y Yamada, A Yamamoto, K Yamamoto, Y Yamanoi, H Yamaoka, T Yamauchi, C Yanagisawa, T Yano, S Yen, N Yershov, M Yokoyama, T Yuan, A Zalewska, J Zalipska, L Zambelli, K Zaremba, M Ziembicki, ED Zimmerman, M Zito, J Zmuda, T Collaboration


Measurements of atmospheric neutrinos and antineutrinos in the MINOS far detector

Physical Review D - Particles, Fields, Gravitation and Cosmology 86 (2012)

P Adamson, C Backhouse, G Barr, M Bishai, AST Blake, GJ Bock, DJ Boehnlein, D Bogert, SV Cao, JD Chapman, S Childress, JAB Coelho, L Corwin, D Cronin-Hennessy, IZ Danko, JK De Jong, NE Devenish, MV Diwan, CO Escobar, JJ Evans, E Falk, GJ Feldman, MV Frohne, HR Gallagher, RA Gomes, MC Goodman, P Gouffon, N Graf, R Gran, K Grzelak, A Habig, J Hartnell, R Hatcher, A Himmel, A Holin, J Hylen, GM Irwin, Z Isvan, DE Jaffe, C James, D Jensen, T Kafka, SMS Kasahara, G Koizumi, S Kopp, M Kordosky, A Kreymer, K Lang, J Ling, PJ Litchfield, L Loiacono, P Lucas, WA Mann, ML Marshak, M Mathis, N Mayer, MM Medeiros, R Mehdiyev, JR Meier, MD Messier, WH Miller, SR Mishra, J Mitchell, CD Moore, L Mualem, S Mufson, J Musser, D Naples, JK Nelson, HB Newman, RJ Nichol, JA Nowak, WP Oliver, M Orchanian, RB Pahlka, J Paley, RB Patterson, G Pawloski, S Phan-Budd, RK Plunkett, X Qiu, A Radovic, J Ratchford, B Rebel, C Rosenfeld, HA Rubin, MC Sanchez, J Schneps, A Schreckenberger, P Schreiner, R Sharma, A Sousa, B Speakman, M Strait, N Tagg, RL Talaga

This paper reports measurements of atmospheric neutrino and antineutrino interactions in the MINOS Far Detector, based on 2553 live-days (37.9kton-years) of data. A total of 2072 candidate events are observed. These are separated into 905 contained-vertex muons and 466 neutrino-induced rock-muons, both produced by charged-current ν μ and ν ̄μ interactions, and 701 contained-vertex showers, composed mainly of charged-current ν e and ν ̄e interactions and neutral-current interactions. The curvature of muon tracks in the magnetic field of the MINOS Far Detector is used to select separate samples of ν μ and ν ̄μ events. The observed ratio of ν ̄μ to ν μ events is compared with the MonteCarlo (MC) simulation, giving a double ratio of Rν̄/νdata/ Rν̄/νMC=1.03±0.08(stat)±0.08(syst). The ν μ and ν ̄μ data are separated into bins of L/E resolution, based on the reconstructed energy and direction of each event, and a maximum likelihood fit to the observed L/E distributions is used to determine the atmospheric neutrino oscillation parameters. This fit returns 90% confidence limits of |Δm2|=(1.9±0.4)×10 -3eV2 and sin22θ>0.86. The fit is extended to incorporate separate ν μ and ν ̄μ oscillation parameters, returning 90% confidence limits of |Δm2|-|Δm ̄2|=0.6- 0.8+2.4×10 -3eV2 on the difference between the squared-mass splittings for neutrinos and antineutrinos. © 2012 American Physical Society.