SciPost logo

The complete scientific publication portal
Managed by professional scientists
For open, global and perpetual access to science

SciPost Submission Page

Theory Status - Puzzles in B Meson Decays and LFU?

by Svjetlana Fajfer

- Published as , 010 (2019)

Submission summary

As Contributors: Svjetlana Fajfer
Preprint link: scipost_201811_00018v1
Date accepted: 2019-01-15
Date submitted: 2018-11-14
Submitted by: Fajfer, Svjetlana
Submitted to: SciPost Physics Proceedings
Domain(s): Theoretical
Subject area: Quantum Physics


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.

Current status:
Published as , 010 (2019)

Submission & Refereeing History

Submission scipost_201811_00018v1 (14 November 2018)

Contributed Reports on this Submission

Show/hide contributed reports

Anonymous Report 1 on 2018-11-26


The writeup is a useful summary of the status of theoretical studies of possible signs of violations of Lepton Flavour Universality in B-meson decays and a valuable contribution to the proceedings.

  • validity: -
  • significance: -
  • originality: -
  • clarity: -
  • formatting: -
  • grammar: -

Login to report or comment