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Rare top-quark decays t -> cg( g) in the aligned two-Higgs-doublet model

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成果类型:
期刊论文
作者:
Cai, Fang-Min;Funatsu, Shuichiro;Li, Xin-Qiang;Yang, Ya-Dong
通讯作者:
Xin-Qiang Li
作者机构:
[Cai, Fang-Min; Funatsu, Shuichiro; Li, Xin-Qiang] Cent China Normal Univ, Inst Particle Phys, Wuhan 430079, Hubei, Peoples R China.
[Cai, Fang-Min; Funatsu, Shuichiro; Li, Xin-Qiang] Cent China Normal Univ, Key Lab Quark & Lepton Phys MOE, Wuhan 430079, Hubei, Peoples R China.
[Yang, Ya-Dong] Zhengzhou Univ, Sch Phys & Microelect, Zhengzhou 450001, Henan, Peoples R China.
通讯机构:
[Xin-Qiang Li] I
Institute of Particle Physics and Key Laboratory of Quark and Lepton Physics(MOE), Central China Normal University, Wuhan, China
语种:
英文
期刊:
EUROPEAN PHYSICAL JOURNAL C
ISSN:
1434-6044
年:
2022
卷:
82
期:
10
页码:
1-31
基金类别:
National Natural Science Foundation of China [12135006, 12075097, 11947213, 11675061, 11775092]; Fundamental Research Funds for the Central Universities [CCNU20TS007, CCNU19TD012, CCNU22LJ004]; International Postdoctoral Exchange Fellowship Program
机构署名:
本校为第一机构
院系归属:
物理科学与技术学院
摘要:
AbstractWe update the Standard Model (SM) predictions for the branching ratios of the rare top-quark decays $$t \rightarrow cg(g)$$ t → c g ( g ) , and evaluate the maximum rates that can be reached in the aligned as well as in the four conventional two-Higgs-doublet models (2HDMs) with $$\mathcal {Z}_2$$ Z 2 symmetries. Taking into account the relevant constraints on the model parameters resulting from a global fit obtained at the $$95.5\%$$ 95.5 % confidence level, we find that the branching ratios of $$t \rightarro...

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