arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2201.12595hep-ph
收藏

用扩展的331规范理论解释B反常

Interpreting B-anomalies within an extended 331 gauge theory

Andrea Addazi, Giulia Ricciardi, Simone Scarlatella, Rahul Srivastava, José W. F. Valle

摘要:

鉴于最近的$R_{K^{(*)}}$数据中性电流味异常$B \to K^{(*)} \ell^+ \ell^-$衰变,我们重新审视其定量解释的扩展331规范理论框架。我们通过增加两个额外的轻子种类来实现这一点,同时确保模型保持无异常。与经典的331模型相比,第一和第二轻子族的规范荷彼此不同,允许轻子味普适性破坏。我们进一步扩大模型,通过增加中性费米子需要提供一个足够的描述小中微子质量。

英文摘要:

In light of the recent $R_{K^{(*)}}$ data on neutral current flavour anomalies in $B \to K^{(*)} \ell^+ \ell^-$ decays, we re-examine their quantitative interpretation in terms of an extended 331 gauge theory framework. We achieve this by adding two extra lepton species with novel 331 charges, while ensuring that the model remains anomaly free. In contrast to the canonical 331 models, the gauge charges of the first and second lepton families differ from each other, allowing lepton flavour universality violation. We further expand the model by adding the neutral fermions required to provide an adequate description for small neutrino masses.

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。

↑