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Theory Status - Puzzles in B Meson Decays and LFU?
by Svjetlana Fajfer
This Submission thread is now published as
|Authors (as registered SciPost users):||Svjetlana Fajfer|
|Preprint Link:||scipost_201811_00018v1 (pdf)|
|Date submitted:||2018-11-14 01:00|
|Submitted by:||Fajfer, Svjetlana|
|Submitted to:||SciPost Physics Proceedings|
|Proceedings issue:||The 15th International Workshop on Tau Lepton Physics (TAU2018)|
Currently B meson puzzles motivate many studies of New Physics due to the observed deviations from the Standard Model predictions. There are two B meson puzzles, RD(∗) and RK(∗). The first one denotes the deviations in the decays driven by the charged current in the ratio of the decay widths for B → D(∗)τν and B → D(∗)μν, while the second one is related to the ratio of the decay widths for B → K (∗) μ+ μ− and B → K (∗) e+ e− transition. Also, the measured muon anomalous magnetic moment differs from the SM predictions. Usually, the effective Lagrangian approach containing New Physics effects is used to analyse RD(∗) and RK(∗). Among many models of New Physics, various leptoquark models are suggested to resolve both B meson anomalies. If New Physics is confirmed in B decays a number of processes at low and high energies should confirm its presence.
Published as SciPost Phys. Proc. 1, 010 (2019)
Submission & Refereeing History
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