Precise Measurement of the Neutrino Mixing Parameter θ23 from Muon Neutrino Disappearance in an Off-Axis Beam

被引：161

作者：

Abe, K. ^{[52
]}

Adam, J. ^{[37
]}

Aihara, H. ^{[28
,51
]}

Akiri, T. ^{[9
]}

Andreopoulos, C. ^{[49
,50
]}

Aoki, S. ^{[29
]}

Ariga, A. ^{[2
]}

Ariga, T. ^{[2
]}

Assylbekov, S. ^{[8
]}

Autiero, D. ^{[34
]}

Barbi, M. ^{[44
]}

Barker, G. J. ^{[60
]}

Barr, G. ^{[40
]}

Bass, M. ^{[8
]}

Batkiewicz, M. ^{[13
]}

Bay, F. ^{[11
]}

Bentham, S. W. ^{[31
]}

Berardi, V. ^{[19
,20
]}

Berger, B. E. ^{[8
]}

Berkman, S. ^{[4
]}

Bertram, I. ^{[31
]}

Bhadra, S. ^{[64
]}

Blaszczyk, F. d. M. ^{[33
]}

Blondel, A. ^{[12
]}

Bojechko, C. ^{[57
]}

Bordoni, S. ^{[15
]}

Boyd, S. B. ^{[60
]}

Brailsford, D. ^{[18
]}

Bravar, A. ^{[12
]}

Bronner, C. ^{[30
]}

Buchanan, N. ^{[8
]}

Calland, R. G. ^{[32
]}

Caravaca Rodriguez, J. ^{[15
]}

Cartwright, S. L. ^{[47
]}

Castillo, R. ^{[15
]}

Catanesi, M. G. ^{[19
,20
]}

Cervera, A. ^{[16
,17
]}

Cherdack, D. ^{[8
]}

Christodoulou, G. ^{[32
]}

Clifton, A. ^{[8
]}

Coleman, J. ^{[32
]}

Coleman, S. J. ^{[7
]}

Collazuol, G. ^{[23
,24
]}

Connolly, K. ^{[61
]}

Cremonesi, L. ^{[43
]}

Dabrowska, A. ^{[13
]}

Danko, I. ^{[42
]}

Das, R. ^{[8
]}

Davis, S. ^{[61
]}

De Perio, P. ^{[55
]}

机构：

[1] Univ Alberta, Dept Phys, Ctr Particle Phys, Edmonton, AB, Canada

[2] Univ Bern, Albert Einstein Ctr Fundamental Phys, High Energy Phys Lab, Bern, Switzerland

[3] Boston Univ, Dept Phys, Boston, MA 02215 USA

[4] Univ British Columbia, Dept Phys & Astron, Vancouver, BC V5Z 1M9, Canada

[5] Univ Calif Irvine, Dept Phys & Astron, Irvine, CA USA

[6] CEA Saclay, IRFU, F-91191 Gif Sur Yvette, France

[7] Univ Colorado, Dept Phys, Boulder, CO 80309 USA

[8] Colorado State Univ, Dept Phys, Ft Collins, CO 80523 USA

[9] Duke Univ, Dept Phys, Durham, NC 27706 USA

[10] Ecole Polytech, CNRS, IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France

[11] Swiss Fed Inst Technol, Inst Particle Phys, Zurich, Switzerland

[12] Univ Geneva, DPNC, Sect Phys, CH-1211 Geneva, Switzerland

[13] H Niewodniczanski Inst Nucl Phys PAN, Krakow, Poland

[14] High Energy Accelerator Res Org KEK, Tsukuba, Ibaraki, Japan

[15] IFAE, Bellaterra, Barcelona, Spain

[16] CSIC, IFIC, Valencia, Spain

[17] Univ Valencia, Valencia, Spain

[18] Univ London Imperial Coll Sci Technol & Med, Dept Phys, London, England

[19] Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy

[20] Univ Politecn Bari, Dipartimento Interuniv Fis, Bari, Italy

[21] Ist Nazl Fis Nucl, Sez Napoli, I-80125 Naples, Italy

[22] Univ Naples Federico II, Dipartimento Fis, Naples, Italy

[23] Ist Nazl Fis Nucl, Sez Padova, Padua, Italy

[24] Univ Padua, Dipartimento Fis, Padua, Italy

[25] Ist Nazl Fis Nucl, Sez Roma, Rome, Italy

[26] Univ Roma La Sapienza, I-00185 Rome, Italy

[27] Russian Acad Sci, Inst Nucl Res, Moscow 117312, Russia

[28] Univ Tokyo, Todai Inst Adv Study, Kavli Inst Phys & Math Universe WPI, Kashiwa, Chiba, Japan

[29] Kobe Univ, Kobe, Hyogo 657, Japan

[30] Kyoto Univ, Dept Phys, Kyoto 606, Japan

[31] Univ Lancaster, Dept Phys, Lancaster, England

[32] Univ Liverpool, Dept Phys, Liverpool L69 3BX, Merseyside, England

[33] Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70803 USA

[34] Univ Lyon 1, IN2P3, IPN Lyon, F-69622 Villeurbanne, France

[35] Miyagi Univ Educ, Dept Phys, Sendai, Miyagi, Japan

[36] Natl Ctr Nucl Res, Warsaw, Poland

[37] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA

[38] Okayama Univ, Dept Phys, Okayama 700, Japan

[39] Osaka City Univ, Dept Phys, Osaka 558, Japan

[40] Univ Oxford, Dept Phys, Oxford, England

[41] Univ Paris Diderot, UPMC, LPNHE, CNRS,IN2P3, Paris, France

[42] Univ Pittsburgh, Dept Phys & Astron, Pittsburgh, PA 15260 USA

[43] Queen Mary Univ London, Sch Phys & Astron, London, England

[44] Univ Regina, Dept Phys, Regina, SK S4S 0A2, Canada

[45] Univ Rochester, Dept Phys & Astron, Rochester, NY 14627 USA

[46] Rhein Westfal TH Aachen, Inst Phys 3, Aachen, Germany

[47] Univ Sheffield, Dept Phys & Astron, Sheffield, S Yorkshire, England

[48] Silesian Univ, Inst Phys, PL-40007 Katowice, Poland

[49] Rutherford Appleton Lab, STFC, Warrington, Cheshire, England

[50] SERC, Daresbury Lab, Warrington WA4 4AD, Cheshire, England

来源：

PHYSICAL REVIEW LETTERS | 2014年 / 112卷 / 18期

基金：

加拿大自然科学与工程研究理事会;

关键词：

SCATTERING; DETECTOR; SYMMETRIES; PHYSICS; MODELS; MASS;

D O I：

10.1103/PhysRevLett.112.181801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

New data from the T2K neutrino oscillation experiment produce the most precise measurement of the neutrino mixing parameter theta(23). Using an off-axis neutrino beam with a peak energy of 0.6 GeV and a data set corresponding to 6.57 x 10(20) protons on target, T2K has fit the energy-dependent nu(mu) oscillation probability to determine oscillation parameters. The 68% confidence limit on sin(2)(theta(23)) is 0.514(-0.056)(+0.055) (0.511 +/- 0.055), assuming normal (inverted) mass hierarchy. The best-fit mass-squared splitting for normal hierarchy is Delta m(32)(2) = (2.51 +/- 0.10) x 10(-3) eV(2)/c(4) (inverted hierarchy: Delta m(13)(2) = (2.48 +/- 0.10) x 10(-3) eV(2)/c(4)). Adding a model of multinucleon interactions that affect neutrino energy reconstruction is found to produce only small biases in neutrino oscillation parameter extraction at current levels of statistical uncertainty.

引用

页数：8

共 10 条

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