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arXiv 1608.02671hep-phhep-ex
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低能中微子测量的弱混合角:全球更新

The weak mixing angle from low energy neutrino measurements: a global update

B. C. Canas, E. A. Garces, O. G. Miranda, M. Tortola, J. W. F. Valle

摘要:

考虑到最近的理论和实验输入的反应堆通量,我们重新考虑弱混合角的测定从低能实验。我们对反应堆反中微子实验中所有可用的中微子-电子散射数据进行了全局分析,得到sin^2(θ_W)= 0.252 \pm 0.030。我们讨论了中微子谱的新理论预测的影响,大亚湾合作的反应堆反中微子谱的新测量,以及辐射修正的影响。我们也重新分析了加速器实验中nu_e-e截面的测量结果,包括辐射修正。通过结合反应堆和加速器的数据,我们得到了一个改进的弱混合角的测定方法,sin^2(θ_W)= 0.254 \pm 0.024。

英文摘要:

Taking into account recent theoretical and experimental inputs on reactor fluxes we reconsider the determination of the weak mixing angle from low energy experiments. We perform a global analysis to all available neutrino-electron scattering data from reactor antineutrino experiments, obtaining sin^2(theta_W) = 0.252 \pm 0.030. We discuss the impact of the new theoretical prediction for the neutrino spectrum, the new measurement of the reactor antineutrino spectrum by the Daya Bay collaboration, as well as the effect of radiative corrections. We also reanalyze the measurements of the nu_e-e cross section at accelerator experiments including radiative corrections. By combining reactor and accelerator data we obtain an improved determination for the weak mixing angle, sin^2(theta_W) = 0.254 \pm 0.024.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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