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题名: Flavour-changing top decays in the aligned two-Higgs-doublet model
作者: Abbas, G;  Celis, A;  Li, XQ;  Lu, J;  Pich, A
刊名: JOURNAL OF HIGH ENERGY PHYSICS
出版日期: 2015
期号: 6, 页码:5
关键词: Rare Decays ;  Beyond Standard Model ;  Heavy Quark Physics
学科分类: Physics
DOI: http://dx.doi.org/10.1007/JHEP06(2015)005
通讯作者: Li, XQ (reprint author), Cent China Normal Univ, Inst Particle Phys, Wuhan 430079, Hubei, Peoples R China.
文章类型: Article
英文摘要: We perform a complete one-loop computation of the two-body flavour-changing top decays t --> ch and t --> cV (V = gamma, Z), within the aligned two-Higgs-doublet model. We evaluate the impact of the model parameters on the associated branching ratios, taking into account constraints from flavour data and measurements of the Higgs properties. Assuming that the 125 GeV Higgs corresponds to the lightest CP-even scalar of the CP-conserving aligned two-Higgs-doublet model, we find that the rates for such flavour-changing top decays lie below the expected sensitivity of the future high-luminosity phase of the LHC. Measurements of the Higgs signal strength in the di-photon channel are found to play an important role in limiting the size of the t --> ch decay rate when the charged scalar of the model is light.
类目[WOS]: Physics, Particles & Fields
关键词[WOS]: HIGGS-DOUBLET MODELS ;  NEUTRAL CURRENTS ;  YUKAWA ALIGNMENT ;  STANDARD MODEL ;  QUARK ;  BOSON ;  LHC ;  VIOLATION ;  SYMMETRY ;  PARTICLE
收录类别: SCI
项目资助者: Spanish Government ;  European Commission (Consolider Project CPAN) [FPA2011-23778, CSD2007-00042] ;  Generalitat Valenciana [PrometeoII/2013/007] ;  Alexander von Humboldt Foundation ;  National Natural Science Foundation of China (NSFC) [11005032, 11435003] ;  Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry ;  Open Project Program of State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, China [Y4KF081CJ1] ;  CCNU from the colleges' basic research and operation of MOE [CCNU15A02037]
语种: 英语
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/20974
Appears in Collections:理论物理所2015年知识产出_期刊论文

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Recommended Citation:
Abbas, G,Celis, A,Li, XQ,et al. Flavour-changing top decays in the aligned two-Higgs-doublet model[J]. JOURNAL OF HIGH ENERGY PHYSICS,2015(6):5.
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