Improved Search for a Light Sterile Neutrino with the Full Configuration of the Daya Bay Experiment

被引：61

作者：

An, F. P. ^{[1
]}

Balantekin, A. B. ^{[2
]}

Band, H. R. ^{[3
]}

Bishai, M. ^{[4
]}

Blyth, S. ^{[5
,6
]}

Cao, D. ^{[7
]}

Cao, G. F. ^{[8
]}

Cao, J. ^{[8
]}

Cen, W. R. ^{[8
]}

Chan, Y. L. ^{[9
]}

Chang, J. F. ^{[8
]}

Chang, L. C. ^{[10
]}

Chang, Y. ^{[6
]}

Chen, H. S. ^{[8
]}

Chen, Q. Y. ^{[11
]}

Chen, S. M. ^{[12
]}

Chen, Y. X. ^{[13
]}

Chen, Y. ^{[14
]}

Cheng, J. -H. ^{[10
]}

Cheng, J. ^{[11
]}

Cheng, Y. P. ^{[8
]}

Cheng, Z. K. ^{[15
]}

Cherwinka, J. J. ^{[2
]}

Chu, M. C. ^{[9
]}

Chukanov, A. ^{[16
]}

Cummings, J. P. ^{[17
]}

de Arcos, J. ^{[18
]}

Deng, Z. Y. ^{[8
]}

Ding, X. F. ^{[8
]}

Ding, Y. Y. ^{[8
]}

Diwan, M. V. ^{[4
]}

Dolgareva, M. ^{[16
]}

Dove, J. ^{[19
]}

Dwyer, D. A. ^{[20
]}

Edwards, W. R. ^{[20
]}

Gill, R. ^{[4
]}

Gonchar, M. ^{[16
]}

Gong, G. H. ^{[12
]}

Gong, H. ^{[12
]}

Grassi, M. ^{[8
]}

Gu, W. Q. ^{[21
]}

Guan, M. Y. ^{[8
]}

Guo, L. ^{[12
]}

Guo, R. P. ^{[8
]}

Guo, X. H. ^{[22
]}

Guo, Z. ^{[12
]}

Hackenburg, R. W. ^{[4
]}

Han, R. ^{[13
]}

Hans, S. ^{[4
]}

He, M. ^{[8
]}

机构：

[1] East China Univ Sci & Technol, Inst Modern Phys, Shanghai, Peoples R China

[2] Univ Wisconsin, Madison, WI USA

[3] Yale Univ, Dept Phys, New Haven, CT USA

[4] Brookhaven Natl Lab, Upton, NY 11973 USA

[5] Natl Taiwan Univ, Dept Phys, Taipei, Taiwan

[6] Natl United Univ, Miaoli, Taiwan

[7] Nanjing Univ, Nanjing, Jiangsu, Peoples R China

[8] Inst High Energy Phys, Beijing, Peoples R China

[9] Chinese Univ Hong Kong, Hong Kong, Hong Kong, Peoples R China

[10] Natl Chiao Tung Univ, Inst Phys, Hsinchu, Taiwan

[11] Shandong Univ, Jinan, Peoples R China

[12] Tsinghua Univ, Dept Engn Phys, Beijing, Peoples R China

[13] North China Elect Power Univ, Beijing, Peoples R China

[14] Shenzhen Univ, Shenzhen, Peoples R China

[15] Sun Yat Sen Zhongshan Univ, Guangzhou, Guangdong, Peoples R China

[16] Joint Inst Nucl Res, Dubna, Moscow Region, Russia

[17] Siena Coll, Loudonville, NY USA

[18] IIT, Dept Phys, Chicago, IL USA

[19] Univ Illinois, Dept Phys, Urbana, IL USA

[20] Lawrence Berkeley Natl Lab, Berkeley, CA USA

[21] Shanghai Jiao Tong Univ, Dept Phys & Astron, Shanghai Lab Particle Phys & Cosmol, Shanghai, Peoples R China

[22] Beijing Normal Univ, Beijing, Peoples R China

[23] Univ Houston, Dept Phys, Houston, TX USA

[24] Virginia Tech, Ctr Neutrino Phys, Blacksburg, VA USA

[25] China Inst Atom Energy, Beijing, Peoples R China

[26] Univ Sci & Technol China, Hefei, Peoples R China

[27] Nankai Univ, Sch Phys, Tianjin, Peoples R China

[28] Univ Cincinnati, Dept Phys, Cincinnati, OH USA

[29] Dongguan Univ Technol, Dongguan, Peoples R China

[30] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA

[31] Univ Hong Kong, Dept Phys, Pokfulam, Hong Kong, Peoples R China

[32] Charles Univ Prague, Fac Math & Phys, Prague, Czech Republic

[33] Princeton Univ, Joseph Henry Labs, Princeton, NJ 08544 USA

[34] Xi An Jiao Tong Univ, Xian, Peoples R China

[35] Pontificia Univ Catolica Chile, Inst Fis, Santiago, Chile

[36] CALTECH, Pasadena, CA 91125 USA

[37] Coll William & Mary, Williamsburg, VA USA

[38] Temple Univ, Coll Sci & Technol, Dept Phys, Philadelphia, PA 19122 USA

[39] Rensselaer Polytech Inst, Dept Phys Appl Phys & Astron, Troy, NY USA

[40] China Gen Nucl Power Grp, Shenzhen, Peoples R China

[41] Natl Univ Def Technol, Coll Elect Sci & Engn, Changsha, Hunan, Peoples R China

[42] Iowa State Univ, Ames, IA USA

[43] Chongqing Univ, Chongqing, Peoples R China

来源：

PHYSICAL REVIEW LETTERS | 2016年 / 117卷 / 15期

基金：

中国国家自然科学基金; 美国国家科学基金会;

关键词：

SYSTEM;

D O I：

10.1103/PhysRevLett.117.151802

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

This Letter reports an improved search for light sterile neutrino mixing in the electron antineutrino disappearance channel with the full configuration of the Daya Bay Reactor Neutrino Experiment. With an additional 404 days of data collected in eight antineutrino detectors, this search benefits from 3.6 times the statistics available to the previous publication, as well as from improvements in energy calibration and background reduction. A relative comparison of the rate and energy spectrum of reactor antineutrinos in the three experimental halls yields no evidence of sterile neutrino mixing in the 2 x 10(-4) less than or similar to vertical bar Delta m(41)(2)vertical bar less than or similar to 0.3 eV(2) mass range. The resulting limits on sin(2) 2 theta(14) are improved by approx imately a factor of 2 over previous results and constitute the most stringent constraints to date in the vertical bar Delta m(41)(2)vertical bar less than or similar to 0.2 eV(2) region.

引用

页数：7