Giles Barr: Publications

Measurements of atmospheric neutrinos and antineutrinos in the MINOS far detector

Physical Review D - Particles, Fields, Gravitation and Cosmology 86:5 (2012)

Authors:

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, J Thomas, MA Thomson, R Toner, D Torretta

Abstract:

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.

More details from the publisher

More details

The T2K ND280 off-axis pi-zero detector

Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 686 (2012) 48-63

Authors:

S Assylbekov, G Barr, BE Berger, H Berns, D Beznosko, A Bodek, R Bradford, N Buchanan, H Budd, Y Caffari, K Connolly, I Danko, R Das, S Davis, M Day, S Dytman, M Dziomba, R Flight, D Forbush, K Gilje, D Hansen, J Hignight, J Imber, RA Johnson, CK Jung, V Kravtsov, PT Le, GD Lopez, CJ Malafis, S Manly, AD Marino, KS McFarland, C McGrew, C Metelko, G Nagashima, D Naples, TC Nicholls, B Nielsen, V Paolone, P Paul, GF Pearce, W Qian, K Ramos, E Reinherz-Aronis, PA Rodrigues, D Ruterbories, J Schmidt, J Schwehr, M Siyad, J Steffens, AS Tadepalli, IJ Taylor, M Thorpe, W Toki, C Vanek, D Warner, A Weber, RJ Wilkes, RJ Wilson, C Yanagisawa, T Yuan

Abstract:

The pi-zero detector (POD) is one of the subdetectors that makes up the off-axis near detector for the Tokai-to-Kamioka (T2K) long baseline neutrino experiment. The primary goal for the POD is to measure the relevant cross-sections for neutrino interactions that generate π0s, especially the cross-section for neutral current π0 interactions, which are one of the dominant sources of background to the νμ→ νe appearance signal in T2K. The POD is composed of layers of plastic scintillator alternating with water bags and brass sheets or lead sheets and is one of the first detectors to use Multi-Pixel Photon Counters (MPPCs) on a large scale. © 2012 Elsevier B.V. All rights reserved.

More details from the publisher

More details

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

(2012)

Authors:

The NA49 Collaboration, 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

More details from the publisher

Improved measurement of muon antineutrino disappearance in MINOS

Physical Review Letters 108:19 (2012)

Authors:

P Adamson, DS Ayres, C Backhouse, G Barr, M Bishai, A Blake, GJ Bock, DJ Boehnlein, D Bogert, SV Cao, 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, X Huang, 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, R Mehdiyev, JR Meier, MD Messier, DG Michael, 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

Abstract:

We report an improved measurement of ν ̄μ disappearance over a distance of 735 km using the MINOS detectors and the Fermilab Main Injector neutrino beam in a ν ̄μ-enhanced configuration. From a total exposure of 2.95×1020 protons on target, of which 42% have not been previously analyzed, we make the most precise measurement of Δm ̄2=[2.62-0.28+0.31(stat)±0. 09(syst)]×10 -3eV2 and constrain the ν ̄μ mixing angle sin2(2θ̄)>0.75 (90% C.L.). These values are in agreement with Δm2 and sin2(2θ) measured for ν μ, removing the tension reported in. © 2012 American Physical Society.

More details from the publisher

More details

First Muon-Neutrino Disappearance Study with an Off-Axis Beam

(2012)

Authors:

T2K Collaboration, 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, R 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 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, 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, A Laing, 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, K Nakayoshi, 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, 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 Sánchez, 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, M Stodulski, C Strabel, R Sulej, A Suzuki, K Suzuki, S Suzuki, SY Suzuki, Y Suzuki, Y Suzuki, J Swierblewski, 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 Wikström, 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

More details from the publisher

Giles Barr

Sub department

Measurements of atmospheric neutrinos and antineutrinos in the MINOS far detector

Authors:

Abstract:

The T2K ND280 off-axis pi-zero detector

Authors:

Abstract:

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

Authors:

Improved measurement of muon antineutrino disappearance in MINOS

Authors:

Abstract:

First Muon-Neutrino Disappearance Study with an Off-Axis Beam

Authors:

FIND US

CONTACT US

Giles Barr

Sub department

Research groups

Measurements of atmospheric neutrinos and antineutrinos in the MINOS far detector

Authors:

Abstract:

The T2K ND280 off-axis pi-zero detector

Authors:

Abstract:

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

Authors:

Improved measurement of muon antineutrino disappearance in MINOS

Authors:

Abstract:

First Muon-Neutrino Disappearance Study with an Off-Axis Beam

Authors: