Neutrino oscillation physics potential of the T2K experiment

被引:63
作者
Abe, K. [1 ]
Adam, J. [2 ]
Aihara, H. [3 ,4 ]
Akiri, T. [5 ]
Andreopoulos, C. [6 ,7 ]
Aoki, S. [8 ]
Ariga, A. [9 ]
Assylbekov, S. [10 ]
Autiero, D. [11 ]
Barbi, M. [12 ]
Barker, G. J. [13 ]
Barr, G. [14 ]
Bartet-Friburg, P. [15 ]
Bass, M. [10 ]
Batkiewicz, M. [16 ]
Bay, F. [17 ]
Berardi, V. [18 ,19 ,20 ]
Berger, B. E. [4 ,10 ]
Berkman, S. [21 ]
Bhadra, S. [22 ]
Blaszczyk, F. D. M. [23 ]
Blondel, A. [24 ]
Bojechko, C. [25 ]
Bordoni, S. [26 ]
Boyd, S. B. [13 ]
Brailsford, D. [27 ]
Bravar, A. [24 ,50 ,67 ]
Bronner, C. [4 ]
Buchanan, N. [10 ]
Calland, R. G. [28 ]
Rodriguez, J. Caravaca [26 ]
Cartwright, S. L. [29 ]
Castillo, R. [26 ]
Catanesi, M. G. [18 ,19 ,20 ]
Cervera, A. [30 ,31 ,50 ]
Cherdack, D. [10 ]
Christodoulou, G. [28 ]
Clifton, A. [10 ]
Coleman, J. [28 ]
Coleman, S. J. [32 ]
Collazuol, G. [33 ,34 ]
Connolly, K. [35 ]
Cremonesi, L. [36 ]
Dabrowska, A. [16 ]
Danko, I. [37 ]
Das, R. [10 ]
Davis, S. [35 ]
de Perio, P. [38 ]
De Rosa, G. [39 ,40 ]
Dealtry, T. [6 ,7 ,14 ]
机构
[1] Univ Tokyo, Inst Cosm Ray Res, Kamioka Observ, Kamioka, Akita, Japan
[2] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA
[3] Univ Tokyo, Dept Phys, Tokyo 113, Japan
[4] Univ Tokyo, Kavli Inst Phys & Math Universe WPI, Todai Inst Adv Study, Kashiwa, Chiba, Japan
[5] Duke Univ, Dept Phys, Durham, NC 27706 USA
[6] Rutherford Appleton Lab, STFC, Harwell Oxford, England
[7] SERC, Daresbury Lab, Warrington WA4 4AD, Cheshire, England
[8] Kobe Univ, Kobe, Hyogo 657, Japan
[9] Univ Bern, Albert Einstein Ctr Fundamental Phys, Lab High Energy Phys LHEP, Bern, Switzerland
[10] Colorado State Univ, Dept Phys, Ft Collins, CO 80523 USA
[11] Univ Lyon 1, IPN Lyon, IN2P3, F-69622 Villeurbanne, France
[12] Univ Regina, Dept Phys, Regina, SK S4S 0A2, Canada
[13] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England
[14] Univ Oxford, Dept Phys, Oxford, England
[15] Univ Paris Diderot, CNRS IN2P3, UPMC, Lab Phys Nucl & Hautes Energies LPNHE, Paris, France
[16] H Niewodniczanski Inst Nucl Phys PAN, Krakow, Poland
[17] ETH, Inst Particle Phys, Zurich, Switzerland
[18] INFN Sez Bari, Bari, Italy
[19] Univ Bari, Bari, Italy
[20] Politecn Bari, Dipartimento Interuniv Fis, Bari, Italy
[21] Univ British Columbia, Dept Phys & Astron, Vancouver, BC V5Z 1M9, Canada
[22] York Univ, Dept Phys & Astron, Toronto, ON M3J 2R7, Canada
[23] Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70803 USA
[24] Univ Geneva, DPNC, Sect Phys, CH-1211 Geneva, Switzerland
[25] Univ Victoria, Dept Phys & Astron, Victoria, BC, Canada
[26] Inst Fis Altes Energies IFAE, Bellaterra, Barcelona, Spain
[27] Univ London Imperial Coll Sci Technol & Med, Dept Phys, London, England
[28] Univ Liverpool, Dept Phys, Liverpool L69 3BX, Merseyside, England
[29] Univ Sheffield, Dept Phys & Astron, Sheffield, S Yorkshire, England
[30] CSIC, IFIC, Valencia, Spain
[31] Univ Valencia, Valencia, Spain
[32] Univ Colorado, Dept Phys, Boulder, CO 80309 USA
[33] INFN Sez Padova, Padua, Italy
[34] Univ Padua, Dipartimento Fis, Padua, Italy
[35] Univ Washington, Dept Phys, Seattle, WA 98195 USA
[36] Queen Mary Univ London, Sch Phys & Astron, London, England
[37] Univ Pittsburgh, Dept Phys & Astron, Pittsburgh, PA 15260 USA
[38] Univ Toronto, Dept Phys, Toronto, ON, Canada
[39] INFN Sez Napoli, Naples, Italy
[40] Univ Naples Federico II, Dipartimento Fis, Naples, Italy
[41] Ecole Polytech, IN2P3 CNRS, Lab Leprince Ringuet, Palaiseau, France
[42] Warsaw Univ Technol, Inst Radioelect, Warsaw, Poland
[43] CEA Saclay, IRFU, F-91191 Gif Sur Yvette, France
[44] Univ Lancaster, Dept Phys, Lancaster, England
[45] High Energy Accelerator Res Org KEK, Tsukuba, Ibaraki, Japan
[46] Miyagi Univ Educ, Dept Phys, Sendai, Miyagi, Japan
[47] Univ Wroclaw, Fac Phys & Astron, PL-50138 Wroclaw, Poland
[48] Russian Acad Sci, Inst Nucl Res, Moscow 117312, Russia
[49] TRIUMF, Vancouver, BC V6T 2A3, Canada
[50] Kyoto Univ, Dept Phys, Kyoto 606, Japan
基金
加拿大自然科学与工程研究理事会;
关键词
SIMULATION; AXIS;
D O I
10.1093/ptep/ptv031
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The observation of the recent electron neutrino appearance in a muon neutrino beam and the high-precision measurement of the mixing angle theta(13) have led to a re-evaluation of the physics potential of the T2K long-baseline neutrino oscillation experiment. Sensitivities are explored for CP violation in neutrinos, non-maximal sin(2) 2 theta(23), the octant of theta(23), and the mass hierarchy, in addition to the measurements of delta CP, sin(2) theta(23), and Delta m(32)(2), for various combinations of nu-mode and (nu) over bar -mode data-taking. With an exposure of 7.8 x 10(21) protons-on-target, T2K can achieve 1 sigma resolution of 0.050 (0.054) on sin(2) theta(23) and 0.040 (0.045) x 10(-3) eV(2) on Delta m(32)(2) for 100% (50%) neutrino beam mode running assuming sin(2) theta(23) = 0.5 and Delta m(32)(2) = 2.4 x 10(-3) eV(2). T2K will have sensitivity to the CP-violating phase delta(CP) at 90% C.L. or better over a significant range. For example, if sin(2) 2 theta(23) is maximal (i.e.theta(23) = 45 degrees) the range is -115 degrees < delta(CP) < -60 degrees for normal hierarchy and +50 degrees < delta(CP) < + 130 degrees for inverted hierarchy. When T2K data is combined with data from the NO nu A experiment, the region of oscillation parameter space where there is sensitivity to observe a non-zero delta CP is substantially increased compared to if each experiment is analyzed alone.
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页数:36
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