PROSPECT 在 HFIR 上的首次短基线中微子振荡搜寻
高能物理 - 实验
2018-12-26 v4
摘要
本快报报道了在高通量同位素反应堆观测 U 裂变产物所发射反中微子的首批科学结果。PROSPECT（精密反应堆振荡与能谱实验）由一个分段的 4 吨 Li 掺杂液体闪烁体探测器组成，覆盖距反应堆 7-9 m 的基线范围，并在小于 1 米水当量覆岩下运行。在标称功率 85 MW 的反应堆运行 33 个存活日收集的数据 yielding 25461 283（统计）例逆 beta 衰变探测。在地面反应堆开机数据采集两小时内，PROSPECT 可以 5 统计显著性实现反应堆反中微子观测。对逆 beta 衰变 prompt 能谱随基线的反应堆模型无关分析，在 95% 置信水平约束了先前允许的无菌中微子振荡参数空间的显著部分，并以 2.2 置信水平排斥反应堆反中微子异常的最佳拟合。
引用
@article{arxiv.1806.02784,
title = {First search for short-baseline neutrino oscillations at HFIR with PROSPECT},
author = {J. Ashenfelter and A. B. Balantekin and C. Baldenegro and H. R. Band and C. D. Bass and D. E. Bergeron and D. Berish and L. J. Bignell and N. S. Bowden and J. Bricco and J. P. Brodsky and C. D. Bryan and A. Bykadorova Telles and J. J. Cherwinka and T. Classen and K. Commeford and A. J. Conant and A. A. Cox and D. Davee and D. Dean and G. Deichert and M. V. Diwan and M. J. Dolinski and A. Erickson and M. Febbraro and B. T. Foust and J. K. Gaison and A. Galindo-Uribarri and C. E. Gilbert and K. E. Gilje and A. Glenn and B. W. Goddard and B. T. Hackett and K. Han and S. Hans and A. B. Hansell and K. M. Heeger and B. Heffron and J. Insler and D. E. Jaffe and X. Ji and D. Jones and K. Koehler and O. Kyzylova and C. E. Lane and T. J. Langford and J. LaRosa and B. R. Littlejohn and F. Lopez and X. Lu and D. A. Martinez Caicedo and J. Matta and R. D. McKeown and M. P. Mendenhall and H. J. Miller and J. M. Minock and P. E. Mueller and H. P. Mumm and J. Napolitano and R. Neilson and J. A. Nikkel and D. Norcini and S. Nour and D. A. Pushin and X. Qian and E. Romero-Romero and R. Rosero and D. Sarenac and B. S. Seilhan and R. Sharma and P. T. Surukuchi and C. Trinh and M. A. Tyra and R. L. Varner and B. Viren and J. M. Wagner and W. Wang and B. White and C. White and J. Wilhelmi and T. Wise and H. Yao and M. Yeh and Y. R. Yen and A. Zhang and C. Zhang and X. Zhang and M. Zhao},
journal= {arXiv preprint arXiv:1806.02784},
year = {2018}
}
备注
7 pages, 5 figures; v3: Added additional supplemental files