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Interpreting Hints for Lepton Flavor Universality Violation

Apr 18, 2017

6 pages

Published in:

Phys.Rev.D 96 (2017) 5, 055008

Published: Sep 8, 2017

e-Print:

1704.05435 [hep-ph]

DOI:

10.1103/PhysRevD.96.055008

View in:

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Abstract: (APS)

We interpret the recent hints for lepton flavor universality violation in rare B meson decays. Based on a model-independent effective Hamiltonian approach, we determine regions of new physics parameter space that give a good description of the experimental data on RK and RK*, which is in tension with Standard Model predictions. We suggest further measurements that can help narrowing down viable new physics explanations. We stress that the measured values of RK and RK* are fully compatible with new physics explanations of other anomalies in rare B meson decays based on the b→sμμ transition. If the hints for lepton flavor universality violation are the first signs of new physics, perturbative unitarity implies new phenomena below a scale of ∼100 TeV.

Note:

5 pages, 3 figures. v2: (belated) update to published version

lepton: flavor: universality
universality: violation
lepton: flavor: violation
B: branching ratio
branching ratio: ratio
effective Hamiltonian
Wilson
meson: decay
unitarity
LHC-B

References(57)

Figures(3)

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