The latest measurements of rare bβs decays in the LHCb experiment have
led to results in tension with the predictions of the standard model (SM),
including a tentative indication of the violation of lepton flavor
universality. Assuming that this situation will persist because of new physics,
we explore some of the potential consequences in the context of the SM extended
with the seesaw mechanism involving right-handed neutrinos plus effective
dimension-six lepton-quark operators under the framework of minimal flavor
violation. We focus on a couple of such operators which can accommodate the
LHCb anomalies and conform to the minimal flavor violation hypothesis in both
their lepton and quark parts. We examine specifically the
lepton-flavor-violating decays BβK(β)βββ², BsββΟβββ²,
Bβ(Ο,Ο)βββ², and Bd,sβββββ², as well as KLββeΞΌ
and KβΟeΞΌ, induced by such operators. The estimated branching
fractions of some of these decay modes with ΞΌΟ in the final states are
allowed by the pertinent experimental constraints to reach a few times
10β7 if other operators do not yield competitive effects. We also look at
the implications for BβK(β)Ξ½Ξ½ and KβΟΞ½Ξ½, finding that
their rates can be a few times larger than their SM values. These results are
testable in future experiments.Comment: 16 pages, no figures, clarifying comments added, references updated,
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