Falsifying high-scale baryogenesis with neutrinoless double beta decay and lepton flavor violation
Falsifying high-scale baryogenesis with neutrinoless double beta decay and lepton flavor violation
复制标题
用无中微子双β衰变和轻子味破坏来伪造高尺度重子发生
DOI：
10.1103/physrevd.92.036005
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发表时间：
2015
影响因子：
5
通讯作者：
H. Pas
中科院分区：
文献类型：
--
作者：
F. Deppisch;J. Harz;M. Hirsch;Wei;H. Pas
在低能量下表现为轻子数违反过程的相互作用与sphaleron跃迁相结合，通常会消除宇宙中任何预先存在的重子不对称性。在这篇文章中，我们讨论了在这种情况下，从无中微子双β衰变的观察得到的约束。如果除了标准的轻中微子交换之外，还能观察到一种新的无中微子双β衰变的物理机制，那么除非通过某种新的机制稳定重子不对称性，否则高尺度重子生成的典型场景将被排除。我们还勾画了如何将这一结论可以扩展到第一轻子代以外的轻子味违反过程。
Interactions that manifest themselves as lepton number violating processes at low energies in combination with sphaleron transitions typically erase any preexisting baryon asymmetry of the Universe. In this article, we discuss the constraints obtained from an observation of neutrinoless double beta decay in this context. If a new physics mechanism of neutrinoless double beta decay other than the standard light neutrino exchange is observed, typical scenarios of high-scale baryogenesis will be excluded unless the baryon asymmetry is stabilized via some new mechanism. We also sketch how this conclusion can be extended beyond the first lepton generation by incorporating lepton flavor violating processes.