Two-Higgs-doublet model with a color-triplet scalar: a joint explanation for top-quark forward–backward asymmetry and Higgs decay to diphoton
Two-Higgs-doublet model with a color-triplet scalar: a joint explanation for top-quark forward–backward asymmetry and Higgs decay to diphoton
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DOI：
10.1140/epjc/s10052-013-2664-7
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发表时间：
2012-12
期刊：
影响因子：
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通讯作者：
C. Han;Ning Liu;Lei Wu;Jin Min Yang;Yang Zhang
中科院分区：
文献类型：
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作者：
C. Han;Ning Liu;Lei Wu;Jin Min Yang;Yang Zhang
The excess of top-quark forward–backward asymmetry () 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 1σlevel. Also, we examined the Higgs decayh→Zγand displayed its correlation withh→γγ. We found that unlike other models, this model predicts a special correlation betweenh→Zγandh→γγ, i.e., theZγrate is highly suppressed while theγγrate is enhanced. This behavior may help to distinguish this model in the future high luminosity run of the LHC.
