Violation of lepton flavour universality in composite Higgs models

被引：86

作者：

Niehoff, Christoph ^{[1
]}

Stangl, Peter ^{[1
]}

Straub, David M. ^{[1
]}

机构：

[1] Tech Univ Munich, Excellence Cluster Univ, D-85748 Garching, Germany

来源：

PHYSICS LETTERS B | 2015年 / 747卷

关键词：

D O I：

10.1016/j.physletb.2015.05.063

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We investigate whether the 2.6 sigma deviation from lepton flavour universality in B+ -> K(+)l(+)l(-) decays recently observed at the LHCb experiment can be explained in minimal composite Higgs models. We show that a visible departure from universality is indeed possible if left-handed muons have a sizable degree of compositeness. Constraints from Z-pole observables are avoided by a custodial protection of the muon coupling. (C) 2015 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license.

引用

页码：182 / 186

页数：5

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