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arXiv 2104.00140hep-ph
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在$β$和$0νββ$衰变实验中具有非标准相互作用的不育中微子

Sterile neutrinos with non-standard interactions in $β$- and $0νββ$-decay experiments

Wouter Dekens, Jordy de Vries, Tom Tong

摘要:

在低能精密$β$衰变实验和高能对撞机中探测带电电流,这两个实验的目的都是测量或限制超越标准模型物理的信号。鉴于未来的$β$衰变和LHC测量将进一步探索这些非标准相互作用,我们研究了无中微子双$β$衰变($0νββ$)实验可以告诉我们是否会发现非零信号。使用最近开发的有效场理论框架,我们考虑了与右-手中微子对$0νββ$的影响,并讨论了中微子质量的范围,目前和未来的$0νββ$测量可以探测,假设中微子是马约拉纳粒子。对于最近观察到的$β$衰变的暗示所建议的水平上的非标准相互作用,我们表明,下一代$0νββ$实验可以确定中微子的狄拉克或马约拉纳性质,对于大于$\mathcal O(10)$ eV的无菌中微子质量。

英文摘要:

Charged currents are probed in low-energy precision $β$-decay experiments and at high-energy colliders, both of which aim to measure or constrain signals of beyond-the-Standard-Model physics. In light of future $β$-decay and LHC measurements that will further explore these non-standard interactions, we investigate what neutrinoless double-$β$ decay ($0νββ$) experiments can tell us if a nonzero signal were to be found. Using a recently developed effective-field-theory framework, we consider the effects that interactions with right-handed neutrinos have on $0νββ$ and discuss the range of neutrino masses that current and future $0νββ$ measurements can probe, assuming neutrinos are Majorana particles. For non-standard interactions at the level suggested by recently observed hints in $β$ decays, we show that next-generation $0νββ$ experiments can determine the Dirac or Majorana nature of neutrinos, for sterile neutrino masses larger than $\mathcal O(10)$ eV.

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