arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1902.09561hep-ph
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$ τ$衰变中趋于张力的张量

Tensors for tending to tensions in $ τ$ decays

Amol Dighe, Subhajit Ghosh, Girish Kumar, Tuhin S. Roy

摘要:

我们提出了一个明显规范不变的有效张量算符,它可以解释$ τ$衰变中的$ CP $不对称异常,这与文献中的说法相反。此外,该运算符还可以帮助解决从包含性$ τ$衰变中提取的$ V_{us} $值中的长期差异。通过构造,该算子避开了中子电偶极矩的限制,同时保持了从独占$ τ$衰变中提取$ V_{us} $的过程不受影响.我们明确地提供了一个重正化模型的味道对称性,产生所需的有效张量算子。

英文摘要:

We propose a manifestly gauge invariant effective tensor operator that can account for the $ CP $ asymmetry anomaly in $ τ$ decays, contrary to the claim made in literature. Additionally, this operator can also help in resolving the long-standing discrepancy in the value of $ V_{us} $ extracted from inclusive $ τ$ decays. By construction, the operator evades bounds from neutron electric dipole moment, while keeping the extraction of $ V_{us} $ from exclusive $ τ$ decays unaffected. We explicitly provide a renormalizable model of flavor symmetries that yields the desired effective tensor operator.

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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