Two-Higgs-doublet model with a color-triplet scalar: a joint explanation for top-quark forward-backward asymmetry and Higgs decay to diphoton

被引：18

作者：

Han, Chengcheng ^{[1
,2
]}

Liu, Ning ^{[1
]}

Wu, Lei ^{[2
]}

Yang, Jin Min ^{[2
]}

Zhang, Yang ^{[1
]}

机构：

[1] Henan Normal Univ, Dept Phys, Xinxiang 453007, Peoples R China

[2] Acad Sinica, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China

来源：

EUROPEAN PHYSICAL JOURNAL C | 2013年 / 73卷 / 12期

基金：

中国国家自然科学基金;

关键词：

PAIR PRODUCTION; BOSON; TEVATRON; CONSTRAINTS; SIGNAL; MASS; LHC;

D O I：

10.1140/epjc/s10052-013-2664-7

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

The excess of top-quark forward-backward asymmetry (A(FB)(t)) reported by the Tevatron and the enhancement of the Higgs decay to diphoton observed at the LHC may point to a same origin of new physics. In this note we examined such anomalies in the two-Higgs-doublet model with a color-triplet scalar. We found that under current experimental constraints this model can simultaneously explain both anomalies at 1 sigma level. Also, we examined the Higgs decay h -> Z gamma and displayed its correlation with h -> gamma gamma. We found that unlike other models, this model predicts a special correlation between h -> Z gamma and h -> gamma gamma, i.e., the Z gamma rate is highly suppressed while the gamma gamma rate is enhanced. This behavior may help to distinguish this model in the future high luminosity run of the LHC.

引用

页码：1 / 10

页数：10

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