利用 KamLAND 测量 7Be 太阳中微子
高能物理 - 实验
2015-12-09 v2 太阳与恒星天体物理
核实验
摘要
我们报告了基于 KamLAND 165.4 kton-day 曝光量对 862 keV 7Be 太阳中微子的中微子 - 电子弹性散射率的测量结果。观测到的速率为 582 +/- 90 (kton-day)^-1，对应于 862 keV 7Be 太阳中微子通量为 (3.26 +/- 0.50) x 10^9 cm^-2s^-1（假设为纯电子味通量）。将该通量与标准太阳模型预测进行比较，并进一步假设三味混合，由 KamLAND 数据确定的 nu_e 存活概率为 0.66 +/- 0.14。利用全局三味振荡分析，我们获得的总 7Be 太阳中微子通量为 (5.82 +/- 0.98) x 10^9 cm^-2s^-1，这与标准太阳模型的预测一致。
引用
@article{arxiv.1405.6190,
title = {7Be Solar Neutrino Measurement with KamLAND},
author = {A. Gando and Y. Gando and H. Hanakago and H. Ikeda and K. Inoue and K. Ishidoshiro and H. Ishikawa and Y. Kishimoto and M. Koga and R. Matsuda and S. Matsuda and T. Mitsui and D. Motoki and K. Nakajima and K. Nakamura and A. Obata and A. Oki and Y. Oki and M. Otani and I. Shimizu and J. Shirai and A. Suzuki and K. Tamae and K. Ueshima and H. Watanabe and B. D. Xu and S. Yamada and Y. Yamauchi and H. Yoshida and A. Kozlov and Y. Takemoto and S. Yoshida and C. Grant and G. Keefer and D. W. McKee and A. Piepke and T. I. Banks and T. Bloxham and S. J. Freedman and B. K. Fujikawa and K. Han and L. Hsu and K. Ichimura and H. Murayama and T. O'Donnell and H. M. Steiner and L. A. Winslow and D. Dwyer and C. Mauger and R. D. McKeown and C. Zhang and B. E. Berger and C. E. Lane and J. Maricic and T. Miletic and J. G. Learned and M. Sakai and G. A. Horton-Smith and A. Tang and K. E. Downum and K. Tolich and Y. Efremenko and Y. Kamyshkov and O. Perevozchikov and H. J. Karwowski and D. M. Markoff and W. Tornow and J. A. Detwiler and S. Enomoto and K. Heeger and M. P. Decowski},
journal= {arXiv preprint arXiv:1405.6190},
year = {2015}
}
备注
8 pages, 6 figures, submitted to Phys. Rev. C