arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2005.03734hep-phhep-ex
收藏

$b\to sμμ$异常对未来$B \to K^{(*)} ν\bar ν$和$K\to πν\bar ν$测量的意义

Implications of $b\to sμμ$ Anomalies for Future Measurements of $B \to K^{(*)} ν\bar ν$ and $K\to πν\bar ν$

Sébastien Descotes-Genon, Svjetlana Fajfer, Jernej F. Kamenik, Martín Novoa-Brunet

摘要:

我们研究了在$b\to sμμ$跃迁中观察到的涉及下型夸克和中微子的味道变化中性流过程偏离标准模型的后果。我们推导出相关的威尔逊系数内的有效场论的方法尊重SM规范对称性,包括右手电流,味道结构的基础上近似$U(2)$对称性,并假设只有SM样轻中微子。我们讨论之间的相关性$B \to K^{(*)} ν\bar ν$和$K\to πν\bar ν$分支比的情况下,线性最小味违反和更一般的框架,突出在每种情况下所发挥的作用,提出了各种新的物理方案来解释$b\to sμμ$偏差。

英文摘要:

We investigate the consequences of deviations from the Standard Model observed in $b\to sμμ$ transitions for flavour-changing neutral-current processes involving down-type quarks and neutrinos. We derive the relevant Wilson coefficients within an effective field theory approach respecting the SM gauge symmetry, including right-handed currents, a flavour structure based on approximate $U(2)$ symmetry, and assuming only SM-like light neutrinos. We discuss correlations among $B \to K^{(*)} ν\bar ν$ and $K\to πν\bar ν$ branching ratios in the case of linear Minimal Flavour Violation and in a more general framework, highlighting in each case the role played by various New Physics scenarios proposed to explain $b\to sμμ$ deviations.

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。

↑