SNO盐数据后三味中微子振荡的现状
高能物理 - 唯象学
2009-09-17 v2
摘要
我们在三味中微子框架下对中微子振荡数据进行了全局分析，包括最近改进的SNO中性流事件测量。除了所有当前的太阳中微子数据外，我们还考虑了来自KamLAND和CHOOZ的反应堆中微子数据、来自Super-Kamiokande和MACRO的大气中微子数据，以及来自K2K长基线加速器实验的首批谱数据。根据这些数据确定了最新的三味振荡参数最佳拟合值和允许范围。此外，我们详细讨论了小参数alpha = Delta_m^2_Sol / Delta_m^2_Atm和sin^2(theta_13)的现状，这些参数决定了中微子振荡中CP破坏效应的可能强度。
引用
@article{arxiv.hep-ph/0309130,
title = {Status of three-neutrino oscillations after the SNO-salt data},
author = {M. Maltoni and T. Schwetz and M. A. Tortola and J. W. F. Valle},
journal= {arXiv preprint arXiv:hep-ph/0309130},
year = {2009}
}
备注
16 pages, LaTeX file using RevTEX4, 10 figures and 1 table included. The conclusions reached in version 1 regarding the restriction on sin^2(theta_13) are now corrected, the solar bound is weaker than that from reactors even after the inclusion of the SNO salt data. In addition the full data set has now been reanalized using the pull method instead of the standard chi-square approach. A few references have also been added