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arXiv 1203.2632hep-ph
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KATRIN对锂中微子质量阴影下的无菌中微子质量的灵敏度

KATRIN Sensitivity to Sterile Neutrino Mass in the Shadow of Lightest Neutrino Mass

Arman Esmaili, Orlando L. G. Peres

摘要:

轻无菌中微子的存在会强烈改变氚β电子的能谱。我们通过扫描几乎所有的中微子质量平方差和混合角的3+1方案的允许区域来分析KATRIN实验的灵敏度。本文考虑了未知的活动中微子绝对质量标度对KATRIN对惰性中微子质量灵敏度的影响。我们发现,经过3年的数据采集,KATRIN实验可以对小到sin ^2(2θ_s)~ 10^-2的混合角敏感。特别地,我们证明了对于小混合角sin ^2(2θ_s)< 0.1,KATRIN实验可以给出活性-无活性质量平方差的最强极限。

英文摘要:

The presence of light sterile neutrinos would strongly modify the energy spectrum of the Tritium β-electrons. We perform an analysis of the KATRIN experiment's sensitivity by scanning almost all the allowed region of neutrino mass-squared difference and mixing angles of the 3+1 scenario. We consider the effect of the unknown absolute mass scale of active neutrinos on the sensitivity of KATRIN to the sterile neutrino mass. We show that after 3 years of data-taking, the KATRIN experiment can be sensitive to mixing angles as small as sin^2 (2θ_s) ~ 10^-2. Particularly we show that for small mixing angles, sin^2 (2θ_s) < 0.1, the KATRIN experiment can gives the strongest limit on active-sterile mass-squared difference.

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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