Joint Determination of Reactor Antineutrino Spectra from 235U and 239Pu Fission by Daya Bay and PROSPECT

被引：13

作者：

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

Andriamirado, M. ^{[2
]}

Balantekin, A. B. ^{[3
]}

Band, H. R. ^{[4
]}

Bass, C. D. ^{[5
]}

Bergeron, D. E. ^{[6
]}

Berish, D. ^{[7
]}

Bishai, M. ^{[8
]}

Blyth, S. ^{[9
]}

Bowden, N. S. ^{[10
]}

Bryan, C. D. ^{[11
]}

Cao, G. F. ^{[12
]}

Cao, J. ^{[12
]}

Chang, J. F. ^{[12
]}

Chang, Y. ^{[13
]}

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

Chen, S. M. ^{[14
]}

Chen, Y. ^{[15
,16
]}

Chen, Y. X. ^{[17
]}

Cheng, J. ^{[12
]}

Cheng, Z. K. ^{[16
]}

Cherwinka, J. J. ^{[3
]}

Chu, M. C. ^{[18
]}

Classen, T. ^{[10
]}

Conant, A. J. ^{[11
]}

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

Dalager, O. ^{[20
]}

Deichert, G. ^{[11
]}

Delgado, A. ^{[21
,22
]}

Deng, F. S. ^{[23
]}

Ding, Y. Y. ^{[12
]}

Diwan, M., V ^{[8
]}

Dohnal, T. ^{[24
]}

Dolinski, M. J. ^{[25
]}

Dolzhikov, D. ^{[26
]}

Dove, J. ^{[27
]}

Dwyer, D. A. ^{[28
]}

Erickson, A. ^{[29
]}

Foust, B. T. ^{[4
]}

Gaison, J. K. ^{[4
]}

Galindo-Uribarri, A. ^{[21
,22
]}

Gallo, J. P. ^{[2
]}

Gilbert, C. E. ^{[21
,22
]}

Gonchar, M. ^{[26
]}

Gong, G. H. ^{[14
]}

Gong, H. ^{[14
]}

Grassi, M. ^{[20
]}

Gu, W. Q. ^{[8
]}

Guo, J. Y. ^{[16
]}

Guo, L. ^{[14
]}

机构：

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

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

[3] Univ Wisconsin, Dept Phys, 1150 Univ Ave, Madison, WI 53706 USA

[4] Yale Univ, Dept Phys, Wright Lab, New Haven, CT USA

[5] Le Moyne Coll, Dept Phys, Syracuse, NY USA

[6] NIST, Gaithersburg, MD 20899 USA

[7] Temple Univ, Dept Phys, Philadelphia, PA 19122 USA

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

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

[10] Lawrence Livermore Natl Lab, Nucl & Chem Sci Div, Livermore, CA 94550 USA

[11] Oak Ridge Natl Lab, High Flux Isotope Reactor, Oak Ridge, TN USA

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

[13] Natl United Univ, Miaoli, Taiwan

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

[15] Shenzhen Univ, Shenzhen, Peoples R China

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

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

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

[19] Siena Coll, Loudonville, NY 12211 USA

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

[21] Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA

[22] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA

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

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

[25] Drexel Univ, Dept Phys, Philadelphia, PA 19104 USA

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

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

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

[29] Georgia Inst Technol, George W Woodruff Sch Mech Engn, Atlanta, GA 30332 USA

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

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

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

[33] Shandong Univ, Jinan, Peoples R China

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

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

[36] Univ Hawaii, Dept Phys & Astron, Honolulu, HI 96822 USA

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

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

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

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

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

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

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

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

[45] CALTECH, Pasadena, CA 91125 USA

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

[47] Univ Waterloo, Inst Quantum Comp, Waterloo, ON, Canada

[48] Univ Waterloo, Dept Phys & Astron, Waterloo, ON, Canada

[49] Nanjing Univ, Nanjing, Peoples R China

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

来源：

PHYSICAL REVIEW LETTERS | 2022年 / 128卷 / 08期

基金：

加拿大自然科学与工程研究理事会; 中国国家自然科学基金; 美国国家科学基金会;

关键词：

NEUTRINO; SCATTERING; PRODUCTS; SEARCH;

D O I：

10.1103/PhysRevLett.128.081801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A joint determination of the reactor antineutrino spectra resulting from the fission of U-235 and Pu-239 has been carried out by the Daya Bay and PROSPECT Collaborations. This Letter reports the level of consistency of U-235 spectrum measurements from the two experiments and presents new results from a joint analysis of both data sets. The measurements are found to be consistent. The combined analysis reduces the degeneracy between the dominant U-235 and Pu-239 isotopes and improves the uncertainty of the U-235 spectral shape to about 3%. The U-235 and Pu-239 antineutrino energy spectra are unfolded from the jointly deconvolved reactor spectra using the Wiener-SVD unfolding method, providing a data-based reference for other reactor antineutrino experiments and other applications. This is the first measurement of the U-235 and Pu-239 spectra based on the combination of experiments at low-and highly enriched uranium reactors.

引用

页数：8

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