Measurement of electron antineutrino oscillation based on 1230 days of operation of the Daya Bay experiment
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AbstractA measurement of electron antineutrino oscillation by the Daya Bay Reactor Neutrino Experiment is described in detail. Six 2.9-GWth nuclear power reactors of the Daya Bay and Ling Ao nuclear power facilities served as intense sources of nu((e) over bar)'s. Comparison of the (v) over bare rate and energy spectrum measured by antineutrino detectors far from the nuclear reactors (similar to 1500-1950 m) relative to detectors near the reactors (similar to 350-600 m) allowed a precise measurement of (v) over bar (e) disappearance. More than 2.5 million (v) over bar (e) inverse beta-decay interactions were observed, based on the combination of 217 days of operation of six antineutrino detectors (December, 2011-July, 2012) with a subsequent 1013 days using the complete configuration of eight detectors (October, 2012-July, 2015). The (v) over bar (e) rate observed at the far detectors relative to the near detectors showed a significant deficit, R = 0.949 +/- 0.002(stat) +/- 0.002(syst). The energy dependence of (v) over bar (e) disappearance showed the distinct variation predicted by neutrino oscillation. Analysis using an approximation for the three-flavor oscillation probability yielded the flavor-mixing angle sin(2)2 theta(13) = 0.0841 +/- 0.0027(stat) +/- 0.0019(syst) and the effective neutrino mass-squared difference of broken vertical bar Delta m(ee)(2)vertical bar = (2.50 +/- 0.06(stat) +/- 0.06(syst)) x 10(-3) eV(2). Analysis using the exact three-flavor probability found Delta m(32)(2) = (2.45 +/- 0.06(stat) +/- 0.06d(syst)) x 10(-3) eV(2) assuming the normal neutrino mass hierarchy and Delta m(32)(2) = (-2.56 +/- 0.06(stat) +/- 0.06(syst)) x 10(-3) eV(2) for the inverted hierarchy.
All Author(s) ListAn FP, Balantekin AB, Band HR, Bishai M, Blyth S, Cao D, Cao GF, Cao J, Cen WR, Chan YL, Chang JF, Chang LC, Chang Y, Chen HS, Chen QY, Chen SM, Chen YX, Chen Y, Cheng JH, Cheng J, Cheng YP, Cheng ZK, Cherwinka JJ, Chu MC, Chukanov A, Cummings JP, de Arcos J, Deng ZY, Ding XF, Ding YY, Diwan MV, Dolgareva M, Dove J, Dwyer DA, Edwards WR, Gill R, Gonchar M, Gong GH, Gong H, Grassi M, Gu WQ, Guan MY, Guo L, Guo XH, Guo YH, Guo Z, Hackenburg RW, Han R, Hans S, He M, Heeger KM, Heng YK, Higuera A, Hor YK, Hsiung YB, Hu BZ, Hu T, Hu W, Huang EC, Huang HX, Huang XT, Huber P, Huo W, Hussain G, Jaffe DE, Jaffke P, Jen KL, Jetter S, Ji XP, Ji XL, Jiao JB, Johnson RA, Jones D, Joshi J, Kang L, Kettell SH, Kohn S, Kramer M, Kwan KK, Kwok MW, Kwok T, Langford TJ, Lau K, Lebanowski L, Lee J, Lee JHC, Lei RT, Leitner R, Leung JKC, Li C, Li DJ, Li F, Li GS, Li QJ, Li S, Li SC, Li WD, Li XN, Li YF, Li ZB, Liang H, Lin CJ, Lin GL, Lin S, Lin SK, Lin YC, Ling JJ, Link JM, Littenberg L, Littlejohn BR, Liu DW, Liu JL, Liu JC, Loh CW, Lu C, Lu HQ, Lu JS, Luk KB, Lv Z, Ma QM, Ma XY, Ma XB, Ma YQ, Malyshkin Y, Caicedo DAM, McDonald KT, McKeown RD, Mitchell I, Mooney M, Nakajima Y, Napolitano J, Naumov D, Naumova E, Ngai HY, Ning Z, Ochoa-Ricoux JP, Olshevskiy A, Pan HR, Park J, Patton S, Pec V, Peng JC, Pinsky L, Pun CSJ, Qi FZ, Qi M, Qian X, Raper N, Ren J, Rosero R, Roskovec B, Ruan XC, Steiner H, Sun GX, Sun JL, Tang W, Taychenachev D, Treskov K, Tsang KV, Tull CE, Viaux N, Viren B, Vorobel V, Wang CH, Wang M, Wang NY, Wang RG, Wang W, Wang X, Wang YF, Wang Z, Wang Z, Wang ZM, Wei HY, Wen LJ, Whisnant K, White CG, Whitehead L, Wise T, Wong HLH, Wong SCF, Worcester E, Wu CH, Wu Q, Wu WJ, Xia DM, Xia JK, Xing ZZ, Xu JY, Xu JL, Xu Y, Xue T, Yang CG, Yang H, Yang L, Yang MS, Yang MT, Ye M, Ye Z, Yeh M, Young BL, Yu ZY, Zeng S, Zhan L, Zhang C, Zhang HH, Zhang JW, Zhang QM, Zhang XT, Zhang YM, Zhang YX, Zhang YM, Zhang ZJ, Zhang ZY, Zhang ZP, Zhao J, Zhao QW, Zhao YB, Zhong WL, Zhou L, Zhou N, Zhuang HL, Zou JH
Journal namePhysical Review D
Detailed descriptionArticle Number: 072006
Year2017
Month4
Day6
Volume Number95
Issue Number7
PublisherAMER PHYSICAL SOC
Pages072006
ISSN2470-0010
eISSN2470-0029
LanguagesEnglish-United Kingdom
Web of Science Subject CategoriesAstronomy & Astrophysics;Physics, Particles & Fields;Astronomy & Astrophysics;Physics

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