Eur. Phys. J. C (2018) 78: 306
https://doi.org/10.1140/epjc/s10052-018-5777-1

Regular Article - Theoretical Physics

B-meson anomalies and Higgs physics in flavored model

¹ Department of Physics, Chongqing University, Chongqing, 401331, China
² Department of Physics, Chung-Ang University, Seoul, 06974, Korea
³ Center for Theoretical Physics of the Universe, Institute for Basic Science (IBS), Daejeon, 34051, Korea
⁴ School of Physics, Korea Institute for Advanced Study, Seoul, 02455, Korea

^* e-mail: cbpark@ibs.re.kr

Received: 29 January 2018
Accepted: 3 April 2018
Published online: 18 April 2018

Abstract

We consider a simple extension of the Standard Model with flavor-dependent , that has been proposed to explain some of B-meson anomalies recently reported at LHCb. The charge is chosen as a linear combination of anomaly-free and . In this model, the flavor structure in the SM is restricted due to flavor-dependent charges, in particular, quark mixings are induced by a small vacuum expectation value of the extra Higgs doublet. As a result, it is natural to get sizable flavor-violating Yukawa couplings of heavy Higgs bosons involving the bottom quark. In this article, we focus on the phenomenology of the Higgs sector of the model including extra Higgs doublet and singlet scalars. We impose various bounds on the extended Higgs sector from Higgs and electroweak precision data, B-meson mixings and decays as well as unitarity and stability bounds, then discuss the productions and decays of heavy Higgs bosons at the LHC.