Solar Neutrino Measurements in Super-Kamiokande-IV
Solar Neutrino Measurements in Super-Kamiokande-IV
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DOI：
10.1103/physrevd.94.052010
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发表时间：
2016-06
期刊：
影响因子：
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通讯作者：
S. Abe;Y. Haga;Y. Hayato;M. Ikeda;K. Iyogi;J. Kameda;Y. Kishimoto;L. Marti;M. Miura;S. Moriyama;M. Nakahata;T. Nakajima;S. Nakayama;A. Orii;H. Sekiya;M. Shiozawa;Y. Sonoda;A. Takeda;H. Tanaka;Y. Takenaga;S. Tasaka;T. Tomura;K. Ueno;T. Yokozawa;R. Akutsu;T. Irvine;H. Kaji;T. Kajita;I. Kametani;K. Kaneyuki;K. P. Lee;Y. Nishimura;T. McLachlan;K. Okumura;E. Richard;L. Labarga;P. Fernandez;F. Blaszczyk;J. Gustafson;C. Kachulis;E. Kearns;32 J. L. Raaf;J. Stone;32 L. R. Sulak;S. Berkman;S. Tobayama;M. Goldhaber;K. Bays;G. Carminati;N. J. Griskevich;W. Kropp;S. Mine;A. Renshaw;M. Smy;H. Sobel;V. Takhistov;P. Weatherly;K. Ganezer;B. Hartfiel;J. Hill;W. Keig;N. Hong;J. Kim;I. Lim;R. Park;T. Akiri;J. Albert;A. Himmel;Z. Li;E. O’Sullivan;K. Scholberg;C. Walter;T. Wongjirad;T. Ishizuka;T. Nakamura;J. Jang;K. Choi;J. Learned;S. Matsuno;S. Smith;M. Friend;T. Hasegawa;T. Ishida;T. Ishii;T. Kobayashi;T. Nakadaira;K. Nakamura;K. Nishikawa;Y. Oyama;K. Sakashita;T. Sekiguchi;T. Tsukamoto;Y. Nakano;A. Suzuki;Y. Takeuchi;T. Yano;S. Cao;T. Hayashino;T. Hiraki;S. Hirota;K. Huang;K. Ieki;M. Jiang;T. Kikawa;A. Minamino;A. Murakami;T. Nakaya;N. Patel;K. Suzuki;S. Takahashi;R. Wendell;Y. Fukuda;Y. Itow;G. Mitsuka;F. Muto;T. Suzuki;P. Mijakowski;K. Frankiewicz;J. Hignight;J. Imber;C. Jung;X. Li;J. Palomino;G. Santucci;I. Taylor;C. Vilela;M. Wilking;C. Yanagisawa;D. Fukuda;H. Ishino;T. Kayano;A. Kibayashi;Y. Koshio;T. Mori;M. Sakuda;J. Takeuchi;R. Yamaguchi;Y. Kuno;R. Tacik;S. Kim;H. Okazawa;Y. Choi;K. Itô;K. Nishijima;M. Koshiba;Y. Totsuka;Y. Suda;M. Yokoyama;C. Bronner;R. Calland;M. Hartz;K. Martens;Y. Obayashi;Y. Suzuki;M. Vagins;C. Nantais;J. Martin;P. Perio;H. Tanaka;A. Konaka;S. Chen;H. Sui;L. Wan;Z. Yang;H. Zhang;Y. Zhang;K. Connolly;M. Dziomba;R. Observatory;Inst. for Nucl. Research;U. Tokyo;Research Center for Cosmic Neutrinos;Department of Applied Physics;U. A. Madrid;Department of Applied Physics;Boston University;Astronomy;U. Columbia;P. Department;Brookhaven National Laboratory;U. California;Irvine;California State Polytechnic University;Chonnam National University;D. University;Junior College;Fukuoka Institute of Technology;G. University;Gist College;Gwangju Institute of Science;Technology;U. Hawaii;High Energy Accelerator Research Organization;K. University;Kyoto University;Miyagi University of Education;Inst. for Nucl. Research;Nagoya University;Kobayashi-Maskawa Institute for the Origin of Particles-Kobayashi-Maskawa-Institute-for-the-Origin-of-102831616;the Universe;N. C. F. N. Research-N.-C.-F.-N.-Research-102713602;State University of New York at Stony Brook;O. University;Okayama;Okayama 700-8530;J. D. O. Physics;O. University;U. O. Regina;Seoul National University;Department of Informatics in Social Welfare;Shizuoka University of Welfare;S. University;T. University;T. U. O. Tokyo;K. I. F. T. Physics;Mathematics of the Universe;The University of Tokyo Institutes for Advanced Study-The-University-of-Tokyo-Institutes-for-Advanced-102424100;U. Toronto;Triumf;4004 Wesbrook Mall;Department of Applied Physics;Tsinghua University;U. Washington
中科院分区：
文献类型：
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作者：
S. Abe;Y. Haga;Y. Hayato;M. Ikeda;K. Iyogi;J. Kameda;Y. Kishimoto;L. Marti;M. Miura;S. Moriyama;M. Nakahata;T. Nakajima;S. Nakayama;A. Orii;H. Sekiya;M. Shiozawa;Y. Sonoda;A. Takeda;H. Tanaka;Y. Takenaga;S. Tasaka;T. Tomura;K. Ueno;T. Yokozawa;R. Akutsu;T. Irvine;H. Kaji;T. Kajita;I. Kametani;K. Kaneyuki;K. P. Lee;Y. Nishimura;T. McLachlan;K. Okumura;E. Richard;L. Labarga;P. Fernandez;F. Blaszczyk;J. Gustafson;C. Kachulis;E. Kearns;32 J. L. Raaf;J. Stone;32 L. R. Sulak;S. Berkman;S. Tobayama;M. Goldhaber;K. Bays;G. Carminati;N. J. Griskevich;W. Kropp;S. Mine;A. Renshaw;M. Smy;H. Sobel;V. Takhistov;P. Weatherly;K. Ganezer;B. Hartfiel;J. Hill;W. Keig;N. Hong;J. Kim;I. Lim;R. Park;T. Akiri;J. Albert;A. Himmel;Z. Li;E. O’Sullivan;K. Scholberg;C. Walter;T. Wongjirad;T. Ishizuka;T. Nakamura;J. Jang;K. Choi;J. Learned;S. Matsuno;S. Smith;M. Friend;T. Hasegawa;T. Ishida;T. Ishii;T. Kobayashi;T. Nakadaira;K. Nakamura;K. Nishikawa;Y. Oyama;K. Sakashita;T. Sekiguchi;T. Tsukamoto;Y. Nakano;A. Suzuki;Y. Takeuchi;T. Yano;S. Cao;T. Hayashino;T. Hiraki;S. Hirota;K. Huang;K. Ieki;M. Jiang;T. Kikawa;A. Minamino;A. Murakami;T. Nakaya;N. Patel;K. Suzuki;S. Takahashi;R. Wendell;Y. Fukuda;Y. Itow;G. Mitsuka;F. Muto;T. Suzuki;P. Mijakowski;K. Frankiewicz;J. Hignight;J. Imber;C. Jung;X. Li;J. Palomino;G. Santucci;I. Taylor;C. Vilela;M. Wilking;C. Yanagisawa;D. Fukuda;H. Ishino;T. Kayano;A. Kibayashi;Y. Koshio;T. Mori;M. Sakuda;J. Takeuchi;R. Yamaguchi;Y. Kuno;R. Tacik;S. Kim;H. Okazawa;Y. Choi;K. Itô;K. Nishijima;M. Koshiba;Y. Totsuka;Y. Suda;M. Yokoyama;C. Bronner;R. Calland;M. Hartz;K. Martens;Y. Obayashi;Y. Suzuki;M. Vagins;C. Nantais;J. Martin;P. Perio;H. Tanaka;A. Konaka;S. Chen;H. Sui;L. Wan;Z. Yang;H. Zhang;Y. Zhang;K. Connolly;M. Dziomba;R. Observatory;Inst. for Nucl. Research;U. Tokyo;Research Center for Cosmic Neutrinos;Department of Applied Physics;U. A. Madrid;Department of Applied Physics;Boston University;Astronomy;U. Columbia;P. Department;Brookhaven National Laboratory;U. California;Irvine;California State Polytechnic University;Chonnam National University;D. University;Junior College;Fukuoka Institute of Technology;G. University;Gist College;Gwangju Institute of Science;Technology;U. Hawaii;High Energy Accelerator Research Organization;K. University;Kyoto University;Miyagi University of Education;Inst. for Nucl. Research;Nagoya University;Kobayashi-Maskawa Institute for the Origin of Particles-Kobayashi-Maskawa-Institute-for-the-Origin-of-102831616;the Universe;N. C. F. N. Research-N.-C.-F.-N.-Research-102713602;State University of New York at Stony Brook;O. University;Okayama;Okayama 700-8530;J. D. O. Physics;O. University;U. O. Regina;Seoul National University;Department of Informatics in Social Welfare;Shizuoka University of Welfare;S. University;T. University;T. U. O. Tokyo;K. I. F. T. Physics;Mathematics of the Universe;The University of Tokyo Institutes for Advanced Study-The-University-of-Tokyo-Institutes-for-Advanced-102424100;U. Toronto;Triumf;4004 Wesbrook Mall;Department of Applied Physics;Tsinghua University;U. Washington
升级的电子设备、改进的水系统动力学、更好的校准和分析技术使超级神冈-IV能够清楚地观察到非常低能量的8B太阳中微子相互作用，反冲电子动能低至3.49 MeV。Super-Kamiokande-IV的数据采集始于2008年9月;本文包括截至2014年2月的数据，总寿命为1664天。测得的太阳中微子通量为（2.308 ± 0.020（stat.）+ 0.039-0.040（系统））× 106/（cm 2sec），假设没有振荡。所观察到的反冲电子能谱是一致的，没有由于中微子振荡的扭曲。对SK-IV中中微子-电子弹性散射率的预期太阳天顶角变化幅度的扩展最大似然拟合导致昼夜不对称性为（-3.6+-1.6（stat.）+- 0.6（系统））%。SK-IV太阳中微子数据确定太阳混合角为sin 2 θ_12 = 0.327+0.026-0.031，所有SK太阳数据（SK-I、SK-II、SK III和SKIV）测量该角度为sin 2 θ_12 = 0.334+0.027-0.023，所确定的质量平方分裂为Δ m2_21 = 4.8+1.5-0.8 × 10 - 5eV 2。
Upgraded electronics, improved water system dynamics, better calibration and analysis techniques allowed Super-Kamiokande-IV to clearly observe very low-energy 8B solar neutrino interactions, with recoil electron kinetic energies as low as 3.49 MeV. Super-Kamiokande-IV data-taking began in September of 2008; this paper includes data until February 2014, a total livetime of 1664 days. The measured solar neutrino flux is (2.308+-0.020(stat.) + 0.039-0.040(syst.)) x 106/(cm2sec) assuming no oscillations. The observed recoil electron energy spectrum is consistent with no distortions due to neutrino oscillations. An extended maximum likelihood fit to the amplitude of the expected solar zenith angle variation of the neutrino-electron elastic scattering rate in SK-IV results in a day/night asymmetry of (-3.6+-1.6(stat.)+-0.6(syst.))%. The SK-IV solar neutrino data determine the solar mixing angle as sin2 theta_12 = 0.327+0.026-0.031, all SK solar data (SK-I, SK-II, SK III and SKIV) measures this angle to be sin2 theta_12 = 0.334+0.027-0.023, the determined mass-squared splitting is Delta m2_21 = 4.8+1.5-0.8 x10-5 eV2.