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B-meson anomalies and Higgs physics in flavored U(1) ′ model

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Title
B-meson anomalies and Higgs physics in flavored U(1) ′ model
Author(s)
Ligong Bian; Hyun Min Lee; Chan Beom Park
Publication Date
2018-04
Journal
European Physical Journal C, v.78, no.4, pp.306 -
Abstract
We consider a simple extension of the Standard Model with flavor-dependent U(1) ′, that has been proposed to explain some of B-meson anomalies recently reported at LHCb. The U(1) ′ charge is chosen as a linear combination of anomaly-free B3- L3 and Lμ- Lτ. In this model, the flavor structure in the SM is restricted due to flavor-dependent U(1) ′ 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. © 2018, The Author(s)
URI
http://pr.ibs.re.kr/handle/8788114/4578
ISSN
1434-6044
Appears in Collections:
Center for Fundamental Theory(순수물리이론 연구단) > Journal Papers (저널논문)
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