R(K(⁎)) from dark matter exchange

Hints of lepton flavor violation have been observed by LHCb in the rate of the decay B→Kμ+μ− relative to that of B→Ke+e−. This can be explained by new scalars and fermions which couple to standard model particles and contribute to these processes at loop level. We explore a simple model of this kind...

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Bibliographic Details
Main Authors: James M. Cline, Jonathan M. Cornell
Format: Article
Language:English
Published: Elsevier 2018-07-01
Series:Physics Letters B
Online Access:http://www.sciencedirect.com/science/article/pii/S0370269318303988
Description
Summary:Hints of lepton flavor violation have been observed by LHCb in the rate of the decay B→Kμ+μ− relative to that of B→Ke+e−. This can be explained by new scalars and fermions which couple to standard model particles and contribute to these processes at loop level. We explore a simple model of this kind, in which one of the new fermions is a dark matter candidate, while the other is a heavy vector-like quark and the scalar is an inert Higgs doublet. We explore the constraints on this model from flavor observables, dark matter direct detection, and LHC run II searches, and find that, while currently viable, this scenario will be directly tested by future experiments.
ISSN:0370-2693