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arXiv 1812.04067hep-phhep-ex
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非标准中微子相互作用与中性规范玻色子

Non-Standard Neutrino Interactions and Neutral Gauge Bosons

Julian Heeck, Manfred Lindner, Werner Rodejohann, Stefan Vogl

摘要:

本文研究了一种新的$U(1)'$对称性的味敏$Z'$玻色子引起的非标准中微子相互作用。我们比较的限制从中微子振荡,相干弹性中微子核散射,$Z'$搜索在不同的光束和对撞机实验的各种简单的反常的$U(1)'$模型产生的线性组合的$B-L$和轻子族数的差异$L_α-L_β$。根据这些模型的特征结构,在长基线中微子振荡实验中很容易避免NSI信号,或者改变各种实验搜索的相对重要性。我们还指出,动力$Z$混合给出消失的NSI在长基线实验中,如果直接耦合之间的$U(1)'$规范玻色子和物质是缺席的。相比之下,$Z$ - $Z'$质量混合产生了这样的NSI,这反过来意味着在标准模型和新的$U(1)'$对称性下都有一个希格斯多重态带电。

英文摘要:

We investigate Non-Standard Neutrino Interactions (NSI) arising from a flavor-sensitive $Z'$ boson of a new $U(1)'$ symmetry. We compare the limits from neutrino oscillations, coherent elastic neutrino-nucleus scattering, and $Z'$ searches at different beam and collider experiments for a variety of straightforward anomaly-free $U(1)'$ models generated by linear combinations of $B-L$ and lepton-family-number differences $L_α-L_β$. Depending on the flavor structure of those models it is easily possible to avoid NSI signals in long-baseline neutrino oscillation experiments or change the relative importance of the various experimental searches. We also point out that kinetic $Z$-$Z'$ mixing gives vanishing NSI in long-baseline experiments if a direct coupling between the $U(1)'$ gauge boson and matter is absent. In contrast, $Z$-$Z'$ mass mixing generates such NSI, which in turn means that there is a Higgs multiplet charged under both the Standard Model and the new $U(1)'$ symmetry.

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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