Affleck-Dine baryogenesis with R-parity violation
Affleck-Dine baryogenesis with R-parity violation
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Affleck-Dine 重子发生与 R 宇称违规
DOI：
10.1103/physrevd.90.045001
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发表时间：
2014
影响因子：
5
通讯作者：
山口昌英
中科院分区：
文献类型：
--
作者：
檜垣徹太郎;中山和則;齋川賢一;高橋智;山口昌英
我们研究了宇宙的重子不对称性是否可以在宇称破坏相互作用的标准模型的超对称扩展的框架下得到解释。结果表明，Affleck-Dine机制自然地通过三线性相互作用，或，如果对应于操作者的耦合的大小，oris足够小。本文还讨论了Q球的形成及其演化。目前的重子不对称性可以在-宇称被轻度破坏和引力子质量相对较重的参数区域内得到解释。另一方面，这是很难解释目前的重子不对称性较大的宇称违反耦合的值，因为Q球很可能被破坏的热环境中的原始重子数被冲走。
We investigate whether the baryon asymmetry of the Universe is explained in the framework of the supersymmetric extension of the Standard Model with-parity violating interactions. It is shown that the Affleck-Dine mechanism naturally works via a trilinear interaction,, or, if the magnitude of the coupling corresponding to the operator,, oris sufficiently small. The formation of Q-balls and their subsequent evolution are also discussed. The present baryon asymmetry can be explained in the parameter region where-parity is mildly violatedand the mass of the gravitino is relatively heavy. On the other hand, it is difficult to explain the present baryon asymmetry for larger values of-parity violating couplings, since Q-balls are likely to be destructed in the thermal environment and the primordial baryon number is washed away.