Precision Measurement of Reactor Antineutrino Oscillation at Kilometer-Scale Baselines by Daya Bay

被引：34

作者：

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

Bai, W. D. ^{[1
]}

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

Bishai, M. ^{[3
]}

Blyth, S. ^{[4
]}

Cao, G. F. ^{[5
]}

Cao, J. ^{[5
]}

Chang, J. F. ^{[5
]}

Chang, Y.

Chen, H. S. ^{[5
]}

Chen, H. Y. ^{[6
,7
]}

Chen, S. M. ^{[6
,7
]}

Chen, Y. ^{[1
,8
]}

Chen, Y. X. ^{[9
]}

Chen, Z. Y. ^{[5
]}

Cheng, J. ^{[9
]}

Cheng, Z. K. ^{[1
]}

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

Chu, M. C. ^{[10
]}

Cummings, J. P. ^{[11
]}

Dalager, O. ^{[12
]}

Deng, F. S. ^{[13
]}

Ding, Y. Y. ^{[5
]}

Ding, X. Y. ^{[14
]}

V. Diwan, M. ^{[3
]}

Dohnal, T. ^{[15
]}

Dolzhikov, D. ^{[5
,16
]}

Dove, J. ^{[17
]}

Duyang, H. Y. ^{[14
]}

Dwyer, D. A. ^{[18
]}

Gallo, J. P. ^{[19
]}

Gonchar, M. ^{[16
]}

Gong, G. H. ^{[6
,7
]}

Gong, H. ^{[6
,7
]}

Gu, W. Q. ^{[3
]}

Guo, J. Y. ^{[1
]}

Guo, L. ^{[6
,7
]}

Guo, X. H. ^{[20
]}

Guo, Y. H. ^{[21
]}

Guo, Z. ^{[6
,7
]}

Hackenburg, R. W. ^{[3
]}

Han, Y. ^{[1
]}

Hans, S. ^{[3
]}

He, M. ^{[5
]}

Heeger, K. M. ^{[22
,23
]}

Heng, Y. K. ^{[5
]}

Hor, Y. K. ^{[1
]}

Hsiung, Y. B. ^{[4
]}

Hu, B. Z. ^{[4
]}

Hu, J. R. ^{[5
]}

机构：

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

[2] Univ Wisconsin, Madison, WI 53706 USA

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

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

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

[6] Natl United Univ, Miaoli, Taiwan

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

[8] Shenzhen Univ, Shenzhen, Peoples R China

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

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

[11] Siena Coll, Loudonville, NY 12211 USA

[12] Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA

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

[14] Shandong Univ, Jinan, Peoples R China

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

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

[17] Univ Illinois, Dept Phys, Urbana, IL 61801 USA

[18] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA

[19] IIT, Dept Phys, Chicago, IL 60616 USA

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

[21] Xi An Jiao Tong Univ, Sch Energy & Power Engn, Dept Nucl Sci & Technol, Xian, Peoples R China

[22] Yale Univ, Wright Lab, New Haven, CT 06520 USA

[23] Yale Univ, Dept Phys, New Haven, CT 06520 USA

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

[25] Guangxi Univ, 100 Daxue East Rd, Nanning, Peoples R China

[26] Virginia Tech, Ctr Neutrino Phys, Blacksburg, VA 24061 USA

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

[28] Univ Cincinnati, Dept Phys, Cincinnati, OH 45221 USA

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

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

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

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

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

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

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

[36] Hong Kong Univ Sci & Technol, Clear Water Bay, Hong Kong, Peoples R China

[37] CALTECH, Pasadena, CA 91125 USA

[38] Coll William & Mary, Williamsburg, VA 23187 USA

[39] Nanjing Univ, Nanjing, Peoples R China

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

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

[42] Iowa State Univ, Ames, IA 50011 USA

[43] Chongqing Univ, Chongqing, Peoples R China

来源：

PHYSICAL REVIEW LETTERS | 2023年 / 130卷 / 16期

基金：

美国国家科学基金会; 中国国家自然科学基金;

关键词：

LOADED LIQUID SCINTILLATOR; MIXING ANGLE; SYSTEM; CALIBRATION;

D O I：

10.1103/PhysRevLett.130.161802

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present a new determination of the smallest neutrino mixing angle 013 and the mass-squared difference Delta m232 using a final sample of 5.55 x 106 inverse beta-decay (IBD) candidates with the final-state neutron captured on gadolinium. This sample is selected from the complete dataset obtained by the Daya Bay reactor neutrino experiment in 3158 days of operation. Compared to the previous Daya Bay results, selection of IBD candidates has been optimized, energy calibration refined, and treatment of back-grounds further improved. The resulting oscillation parameters are sin22013 = 0.0851 +/- 0.0024, Delta m232 = (2.466 +/- 0.060) x 10-3 eV2 for the normal mass ordering or Delta m232 = -(2.571 +/- 0.060) x 10-3 eV2 for the inverted mass ordering.

引用

页数：7

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