Probing the scalar-pseudoscalar mixing in the 125 GeV Higgs particle with current data

被引：62

作者：

Barroso, A. ^{[1
]}

Ferreira, P. M. ^{[1
,2
]}

Santos, Rui ^{[1
,2
]}

Silva, Joao P. ^{[2
,3
]}

机构：

[1] Univ Lisbon, Fac Ciencias, Ctr Fis Teor & Computac, P-1649003 Lisbon, Portugal

[2] Inst Super Engn Lisboa, P-1959007 Lisbon, Portugal

[3] Univ Tecn Lisboa, Inst Super Tecn, CFTP, P-1049001 Lisbon, Portugal

来源：

PHYSICAL REVIEW D | 2012年 / 86卷 / 01期

关键词：

ELECTROWEAK SYMMETRY-BREAKING; STANDARD MODEL; CP VIOLATION; BOSON; ANATOMY; LHC;

D O I：

10.1103/PhysRevD.86.015022

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

LHC has found hints for a Higgs particle of 125 GeV. We investigate the possibility that such a particle is a mixture of scalar and pseudoscalar states. For definiteness, we concentrate on a two-Higgs doublet model with explicit CP violation and soft Z(2) violation. Including all Higgs production mechanisms, we determine the current constraints obtained by comparing h -> yy with h -> VV*, and comment on the information which can be gained by measurements of h -> b (b) over bar. We find bounds vertical bar s(2)vertical bar less than or similar to 0.83 at one sigma, where vertical bar s(2)vertical bar = 0 (vertical bar s(2)vertical bar = 1) corresponds to a pure scalar (pure pseudoscalar) state.

引用

页数：10

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