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Cao, JJ; Han, CC; Wu, L; Yang, JM; Zhang, MC; Cao, JJ (reprint author), Henan Normal Univ, Dept Phys, Xinxiang 453007, Peoples R China.
SUSY induced top quark FCNC decay t -> ch after Run I of LHC
Source PublicationEUROPEAN PHYSICAL JOURNAL C
Language英语
KeywordEven Higgs Bosons Standard Model Mssm Supersymmetry Search Colliders Breaking Physics Masses
AbstractIn light of the Higgs discovery and the nonobservation of sparticles at the LHC, we revisit the supersymmetric theory (SUSY) induced top quark flavor-changing decay into the Higgs boson. We perform a scan over the relevant SUSY parameter space by considering the constraints from the Higgs mass measurement, the LHC search for SUSY, the vacuum stability, the precision electroweak observables as well as B -> X-s gamma. We make the following observations: (1) In the Minimal Supersymmetric Standard Model (MSSM), the branching ratio of t -> ch can only reach 3.0 x 10(-6), which is about one order smaller than previous results obtained before the advent of the LHC. Among the considered constraints, the Higgs mass and the LHC search for sparticles are found to play an important role in limiting the prediction. (2) In the singlet extension of the MSSM, since the squark sector is less constrained by the Higgs mass, the branching ratio of t -> ch can reach the order of 10(-5) in the allowed parameter space. (3) The chiral-conserving mixings delta(LL) and delta(RR) may have remanent effects on t -> ch in the heavy SUSY limit. In the MSSM with squarks above 3 TeV and gluino above 4 TeV and meanwhile the CP-odd Higgs boson mass around 1 TeV, the branching ratio of t -> ch can still reach the order of 10(-8) under the constraints.
2014
ISSN1434-6044
Volume74Issue:9Pages:3058
Subject AreaPhysics
DOI10.1140/epjc/s10052-014-3058-1
Indexed BySCI
Funding OrganizationNational Natural Science Foundation of China (NNSFC) [10821504, 11222548, 11305049, 11135003]; Program for New Century Excellent Talents in University; ARC Center of Excellence ; National Natural Science Foundation of China (NNSFC) [10821504, 11222548, 11305049, 11135003]; Program for New Century Excellent Talents in University; ARC Center of Excellence ; National Natural Science Foundation of China (NNSFC) [10821504, 11222548, 11305049, 11135003]; Program for New Century Excellent Talents in University; ARC Center of Excellence ; National Natural Science Foundation of China (NNSFC) [10821504, 11222548, 11305049, 11135003]; Program for New Century Excellent Talents in University; ARC Center of Excellence
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Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/15650
Collection理论物理所科研产出_SCI论文
Corresponding AuthorCao, JJ (reprint author), Henan Normal Univ, Dept Phys, Xinxiang 453007, Peoples R China.
Recommended Citation
GB/T 7714
Cao, JJ,Han, CC,Wu, L,et al. SUSY induced top quark FCNC decay t -> ch after Run I of LHC[J]. EUROPEAN PHYSICAL JOURNAL C,2014,74(9):3058.
APA Cao, JJ,Han, CC,Wu, L,Yang, JM,Zhang, MC,&Cao, JJ .(2014).SUSY induced top quark FCNC decay t -> ch after Run I of LHC.EUROPEAN PHYSICAL JOURNAL C,74(9),3058.
MLA Cao, JJ,et al."SUSY induced top quark FCNC decay t -> ch after Run I of LHC".EUROPEAN PHYSICAL JOURNAL C 74.9(2014):3058.
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