Terrestrial matter effects on reactor antineutrino oscillations at JUNO or RENO-50: how small is small?

• 作者： Yu-Feng Li ¹ Yifang Wang ¹ Zhi-zhong Xing ¹
• 作者单位：
  1.  Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China and School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
• 提交时间：2016-09-02

摘要: We have carefully examined, in both analytical and numerical ways, how small the terrestrial matter effects can be in a given medium-baseline reactor antineutrino oscillation experiment like JUNO or RENO-50. Taking the ongoing JUNO experiment for example, we show that the inclusion of terrestrial matter effects may reduce the sensitivity of the neutrino mass ordering measurement by \Delta \chi^2_{\rm MO} \simeq 0.6, and a neglect of such effects may shift the best-fit values of the flavor mixing angle \theta_{12} and the neutrino mass-squared difference \Delta_{21} by about 1\sigma to 2\sigma in the future data analysis. In addition, a preliminary estimate indicates that a 2\sigma sensitivity of establishing the terrestrial matter effects can be achieved for about 10 years of data taking at JUNO with the help of a proper near detector implementation.

• 分类： 物理学 >> 核物理学
• 引用： ChinaXiv:201609.00030 (或此版本 ChinaXiv:201609.00030V1)
  doi:10.12074/201609.00030
  CSTR:32003.36.ChinaXiv.201609.00030.V1
• 推荐引用方式： Yu-Feng Li,Yifang Wang,Zhi-zhong Xing.(2016).Terrestrial matter effects on reactor antineutrino oscillations at JUNO or RENO-50: how small is small?.中国科学院科技论文预发布平台.[ChinaXiv:201609.00030] (点此复制)