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arXiv 1908.09713hep-ph
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$B$介子对新物理的约束

Constraints on New Physics from $B$ mesons

Monika Blanke

摘要:

这些会议记录回顾了新物理学对味道违反$B$衰变的贡献。带电和中性电流$B$衰变与轻子味普适性破坏的异常在过去几年中得到了大量的关注,我们讨论了目前的状态,根据今年早些时候提出的新数据。我们还回顾了中性$B$介子混合观测量$ΔM_d$和$ΔM_s$,特别是它们的比率,当与它们的SM预测相比,使用树水平的确定CKM矩阵和最近的格点量子色动力学结果的相关强子矩阵元素。最后,我们提倡K介子物理作为一种独特的探测甚高能标度的方法,并简要讨论了$\varepsilon'/\varepsilon$和$K\toπν\barν$的研究现状。

英文摘要:

These proceedings review the status of New Physics contributions to flavour violating $B$ decays. The anomalies in charged and neutral current $B$ decays related to lepton flavour universality violation have received a substantial amount of attention over the past years, and we discuss the current status in light of the new data presented earlier this year. We also recall a tension in the neutral $B$ meson mixing observables $ΔM_d$ and $ΔM_s$ and in particular their ratio, when compared with their SM predictions obtained using tree-level determinations of the CKM matrix and the recent lattice QCD results for the relevant hadronic matrix elements. Last but not least, we advocate kaon physics as a unique probe of very high energy scales and briefly discuss the current status of $\varepsilon'/\varepsilon$ and $K\toπν\barν$.

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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