COHERENT 锗阵列探测到相干弹性中微子-原子核散射的证据
高能物理 - 实验
2025-12-25 v2
摘要
我们报告了在天然锗上首次探测到相干弹性中微子-原子核散射（CEvNS），该测量在橡树岭国家实验室的散裂中子源进行。COHERENT合作的Ge-Mini探测器采用大质量、低噪声、高纯锗谱仪，具有出色的能量分辨率，分析阈值为1.5 keV电子等效电离能。我们在总曝光量为10.22 GWhkg的条件下，观测到20.6 +7.1 -6.3个计数的事束超出，并以3.9倍标准差的显著性拒绝了无CEvNS假设。该结果与粒子物理标准模型的预测信号率在2倍标准差内一致。
引用
@article{arxiv.2406.13806,
title = {Evidence of Coherent Elastic Neutrino-Nucleus Scattering with COHERENT's Germanium Array},
author = {S. Adamski and M. Ahn and P. S. Barbeau and V. Belov and I. Bernardi and C. Bock and A. Bolozdynya and R. Bouabid and J. Browning and B. Cabrera-Palmer and N. Cedarblade-Jones and A. I. Colón Rivera and E. Conley and V. da Silva and J. Daughhetee and J. Detwiler and K. Ding and M. R. Durand and Y. Efremenko and S. R. Elliott and A. Erlandson and L. Fabris and A. Galindo-Uribarri and M. P. Green and J. Hakenmüller and M. R. Heath and S. Hedges and H. Jeong and B. A. Johnson and T. Johnson and H. Jones and A. Khromov and D. Kim and A. Konovalov and E. Kozlova and A. Kumpan and O. Kyzylova and Y. Lee and G. Li and L. Li and J. M. Link and J. Liu and M. Luxnat and A. Major and K. Mann and D. M. Markoff and J. Mattingly and J. Moye and P. E. Mueller and J. Newby and N. Ogoi and J. O'Reilly and D. S. Parno and D. Pérez-Loureiro and D. Pershey and C. G. Prior and J. Queen and R. Rapp and H. Ray and O. Razuvaeva and D. Reyna and G. C. Rich and D. Rudik and J. Runge and D. J. Salvat and J. Sander and K. Scholberg and A. Shakirov and G. Simakov and W. M. Snow and V. Sosnovtsev and M. Stringer and T. Subedi and B. Suh and B. Sur and R. Tayloe and K. Tellez-Giron-Flores and Y. -T. Tsai and E. E. van Nieuwenhuizen and C. J. Virtue and G. Visser and K. Walkup and E. M. Ward and T. Wongjirad and Y. Yang and J. Yoo and C. -H. Yu and A. Zaalishvili},
journal= {arXiv preprint arXiv:2406.13806},
year = {2025}
}
备注
7 pages, 6 figures