An extension of two-Higgs-doublet model and the excesses of 750 GeV diphoton, muon g-2 and h → μτ

被引:35
|
作者
Han, Xiao-Fang [1 ]
Wang, Lei [1 ,2 ]
Yang, Jin Min [3 ,4 ]
机构
[1] Yantai Univ, Dept Phys, Yantai 264005, Peoples R China
[2] Univ Valencia, CSIC, IFIC, Apt Correus 22085, E-46071 Valencia, Spain
[3] Acad Sinica, Inst Theoret Phys, Beijing 100190, Peoples R China
[4] Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan
基金
中国国家自然科学基金;
关键词
HIGGS; RESONANCE; CONSTRAINTS;
D O I
10.1016/j.physletb.2016.04.036
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
In this paper we simultaneously explain the excesses of the 750 GeV diphoton, muon g-2 and h -> mu tau in an extension of the two-Higgs-doublet model (2HDM) with additional vector-like fermions and a CP-odd scalar singlet (P) which is identified as the 750 GeV resonance. This 750 GeV resonance has a mixing with the CP-odd scalar (A) from a second scalar doublet, which leads to a coupling between P and the SM particles as well as a coupling between A and the vector-like fermions. Such mixing and couplings are strongly constrained by tau -> mu gamma, muon g-2 and the 750 GeV diphoton data. We scan over the parameter space and find that such an extension can simultaneously account for the observed excesses of 750 GeV diphoton, muon g-2 and h -> mu tau. The 750 GeV resonance decays in exotic modes, such as P -> hA, P -> H Z, P -> H A and P -> W-+/- H--/+ and its width can be dozens of GeV and is sensitive to the mixing angle. (C) 2016 The Authors. Published by Elsevier B.V.
引用
收藏
页码:537 / 547
页数:11
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