Measurement of Atmospheric Neutrino Oscillations with IceCube

被引:50
作者
Aartsen, M. G. [2 ]
Abbasi, R. [29 ,30 ]
Abdou, Y. [24 ]
Ackermann, M. [47 ]
Adams, J. [16 ]
Aguilar, J. A. [23 ]
Ahlers, M. [29 ,30 ]
Altmann, D. [10 ]
Auffenberg, J. [29 ,30 ]
Bai, X. [34 ,35 ]
Baker, M. [29 ,30 ]
Barwick, S. W. [25 ]
Baum, V. [31 ]
Bay, R. [8 ]
Beatty, J. J. [18 ,19 ,20 ]
Bechet, S. [13 ]
Tjus, J. Becker [11 ]
Becker, K. -H. [46 ]
Bell, M. [44 ]
Benabderrahmane, M. L. [47 ]
BenZvi, S. [29 ,30 ]
Berdermann, J. [47 ]
Berghaus, P. [47 ]
Berley, D. [17 ]
Bernardini, E. [47 ]
Bernhard, A. [24 ,33 ]
Bertrand, D. [13 ]
Besson, D. Z. [27 ]
Binder, G. [8 ,9 ]
Bindig, D. [46 ]
Bissok, M. [1 ]
Blaufuss, E. [17 ]
Blumenthal, J. [1 ]
Boersma, D. J. [45 ]
Bohaichuk, S. [22 ]
Bohm, C. [38 ,39 ]
Bose, D. [14 ]
Boeser, S. [12 ]
Botner, O. [45 ]
Brayeur, L. [14 ]
Bretz, H. -P. [47 ]
Brown, A. M. [16 ]
Bruijn, R. [26 ]
Brunner, J. [47 ]
Carson, M. [24 ]
Casey, J. [5 ,6 ]
Casier, M. [14 ]
Chirkin, D. [29 ,30 ]
Christov, A. [23 ]
Christy, B. [17 ]
机构
[1] Rhein Westfal TH Aachen, Inst Phys 3, D-52056 Aachen, Germany
[2] Univ Adelaide, Sch Chem & Phys, Adelaide, SA 5005, Australia
[3] Univ Alaska Anchorage, Dept Phys & Astron, Anchorage, AK 99508 USA
[4] Clark Atlanta Univ, CTSPS, Atlanta, GA 30314 USA
[5] Georgia Inst Technol, Sch Phys, Atlanta, GA 30332 USA
[6] Georgia Inst Technol, Ctr Relativist Astrophys, Atlanta, GA 30332 USA
[7] Southern Univ, Dept Phys, Baton Rouge, LA 70813 USA
[8] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA
[9] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA
[10] Humboldt Univ, Inst Phys, D-12489 Berlin, Germany
[11] Ruhr Univ Bochum, Fak Phys & Astron, D-44780 Bochum, Germany
[12] Univ Bonn, Inst Phys, D-53115 Bonn, Germany
[13] Univ Libre Brussels, Sci Fac CP230, B-1050 Brussels, Belgium
[14] Vrije Univ Brussel, Dienst ELEM, B-1050 Brussels, Belgium
[15] Chiba Univ, Dept Phys, Chiba 2638522, Japan
[16] Univ Canterbury, Dept Phys & Astron, Christchurch 1, New Zealand
[17] Univ Maryland, Dept Phys, College Pk, MD 20742 USA
[18] Ohio State Univ, Dept Phys, Columbus, OH 43210 USA
[19] Ohio State Univ, Ctr Cosmol & Astroparticle Phys, Columbus, OH 43210 USA
[20] Ohio State Univ, Dept Astron, Columbus, OH 43210 USA
[21] TU Dortmund Univ, Dept Phys, D-44221 Dortmund, Germany
[22] Univ Alberta, Dept Phys, Edmonton, AB T6G 2E1, Canada
[23] Univ Geneva, Dept Phys Nucl & Corpusculaire, CH-1211 Geneva, Switzerland
[24] Univ Ghent, Dept Phys & Astron, B-9000 Ghent, Belgium
[25] Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA
[26] Ecole Polytech Fed Lausanne, High Energy Phys Lab, CH-1015 Lausanne, Switzerland
[27] Univ Kansas, Dept Phys & Astron, Lawrence, KS 66045 USA
[28] Univ Wisconsin, Dept Astron, Madison, WI 53706 USA
[29] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA
[30] Univ Wisconsin, Wisconsin IceCube Particle Astrophys Ctr, Madison, WI 53706 USA
[31] Johannes Gutenberg Univ Mainz, Inst Phys, D-55099 Mainz, Germany
[32] Univ Mons, B-7000 Mons, Belgium
[33] Tech Univ Munich, D-85748 Garching, Germany
[34] Univ Delaware, Bartol Res Inst, Newark, DE 19716 USA
[35] Univ Delaware, Dept Phys & Astron, Newark, DE 19716 USA
[36] Univ Oxford, Dept Phys, Oxford OX1 3NP, England
[37] Univ Wisconsin, Dept Phys, River Falls, WI 54022 USA
[38] Stockholm Univ, Oskar Klein Ctr, SE-10691 Stockholm, Sweden
[39] Stockholm Univ, Dept Phys, SE-10691 Stockholm, Sweden
[40] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA
[41] Sungkyunkwan Univ, Dept Phys, Suwon 440746, South Korea
[42] Univ Alabama, Dept Phys & Astron, Tuscaloosa, AL 35487 USA
[43] Penn State Univ, Dept Astron & Astrophys, University Pk, PA 16802 USA
[44] Penn State Univ, Dept Phys, University Pk, PA 16802 USA
[45] Uppsala Univ, Dept Phys & Astron, S-75120 Uppsala, Sweden
[46] Berg Univ Wuppertal, Dept Phys, D-42119 Wuppertal, Germany
[47] DESY, D-15735 Zeuthen, Germany
[48] Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany
[49] Ist Nazl Fis Nucl, Dipartimento Fis, I-70126 Bari, Italy
基金
瑞士国家科学基金会; 加拿大自然科学与工程研究理事会; 美国国家科学基金会; 澳大利亚研究理事会; 瑞典研究理事会;
关键词
PERFORMANCE; TELESCOPE; SYSTEM;
D O I
10.1103/PhysRevLett.111.081801
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We present the first statistically significant detection of neutrino oscillations in the high-energy regime (> 20 GeV) from an analysis of IceCube Neutrino Observatory data collected in 2010 and 2011. This measurement is made possible by the low-energy threshold of the DeepCore detector (similar to 20 GeV) and benefits from the use of the IceCube detector as a veto against cosmic-ray-induced muon background. The oscillation signal was detected within a low-energy muon neutrino sample (20-100 GeV) extracted from data collected by DeepCore. A high-energy muon neutrino sample (100 GeV-10 TeV) was extracted from IceCube data to constrain systematic uncertainties. The disappearance of low-energy upward-going muon neutrinos was observed, and the nonoscillation hypothesis is rejected with more than 5 sigma significance. In a two-neutrino flavor formalism, our data are best described by the atmospheric neutrino oscillation parameters vertical bar Delta m(32)(2)vertical bar = (2.3(-0.5)(+0.6)) x 10(-3) eV(2) and sin(2) (2 theta(23)) > 0.93, and maximum mixing is favored.
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页数:6
相关论文
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