KamLAND对前超新星恒星中微子的灵敏度
高能天体物理现象
2016-02-17 v4 高能物理 - 实验
仪器与探测器
摘要
在大质量恒星（）核燃烧的晚期，通过各种过程产生中微子-反中微子对成为主导的恒星冷却机制。随着恒星演化，这些中微子的能量增加，在超新星前数日，发射的电子反中微子中显著部分超过自由氢上逆β衰变的能量阈值。这是液体闪烁体探测器的黄金通道，因为符合特征允许显著减少背景信号。我们发现kiloton级液体闪烁体探测器KamLAND能够在超新星之前以3显著性探测来自质量、距离小于690~pc的恒星的这些前超新星中微子。该极限依赖于中微子质量顺序和背景水平。KamLAND连续获取数据，可向学界提供超新星警报。
引用
@article{arxiv.1506.01175,
title = {KamLAND Sensitivity to Neutrinos from Pre-Supernova Stars},
author = {K. Asakura and A. Gando and Y. Gando and T. Hachiya and S. Hayashida and H. Ikeda and K. Inoue and K. Ishidoshiro and T. Ishikawa and S. Ishio and M. Koga and S. Matsuda and T. Mitsui and D. Motoki and K. Nakamura and S. Obara and T. Oura and I. Shimizu and Y. Shirahata and J. Shirai and A. Suzuki and H. Tachibana and K. Tamae and K. Ueshima and H. Watanabe and B. D. Xu and A. Kozlov and Y. Takemoto and S. Yoshida and K. Fushimi and A. Piepke and T. I. Banks and B. E. Berger and B. K. Fujikawa and T. O'Donnell and J. G. Learned and J. Maricic and S. Matsuno and M. Sakai and L. A. Winslow and Y. Efremenko and H. J. Karwowski and D. M. Markoff and W. Tornow and J. A. Detwiler and S. Enomoto and M. P. Decowski},
journal= {arXiv preprint arXiv:1506.01175},
year = {2016}
}
备注
19 pages, 6 figures, 1 table