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Cao, Junjie; Heng, Zhaoxia; Yang, Jin Min; Cao, JJ , Henan Normal Univ, Dept Phys, Xinxiang 453007, Peoples R China
Rare Z-decay into light CP-odd Higgs bosons: a comparative study in different new physics models
Source PublicationJOURNAL OF HIGH ENERGY PHYSICS
KeywordSupersymmetric Standard Model e(+)e(-) Collisions Opal Detector Search Lep Colliders Mssm Phenomenology Parameters Neutralino
AbstractVarious new physics models predict a light CP-odd Higgs boson (labeled as a) and open up new decay modes for Z-boson, such as Z -> (f) over bar fa, Z -> a gamma and Z -> aaa, which could be explored at the GigaZ option of the ILC. In this work we investigate these rare decays in several new physics models, namely the type-II two Higgs doublet model (type-II 2HDM), the lepton-specific two Higgs doublet model (L2HDM), the nearly minimal supersymetric standard model (nMSSM) and the next-to-minimal supersymmetric standard model (NMSSM). We find that in the parameter space allowed by current experiments, the branching ratios can reach 10(-4) for Z -> (f) over bar fa (f = b,tau), 10(-9) for Z -> a gamma and 10(-3) for Z -> aaa, which implies that the decays Z -> (f) over bar fa and Z -> aaa may be accessible at the GigaZ option. Moreover, since different models predict different patterns of the branching ratios, the measurement of these rare decays at the GigaZ may be utilized to distinguish the models.
2010
ISSN1126-6708
Issue11Pages:-
Subject AreaPhysics
Indexed BySCI
Funding OrganizationHASTIT[2009HASTIT004]; National Natural Science Foundation of China (NNSFC)[10821504, 10725526, 10635030, 10775039, 11075045]; Chinese Academy of Sciences[KJCX2.YW.W10] ; HASTIT[2009HASTIT004]; National Natural Science Foundation of China (NNSFC)[10821504, 10725526, 10635030, 10775039, 11075045]; Chinese Academy of Sciences[KJCX2.YW.W10] ; HASTIT[2009HASTIT004]; National Natural Science Foundation of China (NNSFC)[10821504, 10725526, 10635030, 10775039, 11075045]; Chinese Academy of Sciences[KJCX2.YW.W10] ; HASTIT[2009HASTIT004]; National Natural Science Foundation of China (NNSFC)[10821504, 10725526, 10635030, 10775039, 11075045]; Chinese Academy of Sciences[KJCX2.YW.W10]
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Cited Times:11[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/5024
Collection理论物理所科研产出_SCI论文
Corresponding AuthorCao, JJ , Henan Normal Univ, Dept Phys, Xinxiang 453007, Peoples R China
Recommended Citation
GB/T 7714
Cao, Junjie,Heng, Zhaoxia,Yang, Jin Min,et al. Rare Z-decay into light CP-odd Higgs bosons: a comparative study in different new physics models[J]. JOURNAL OF HIGH ENERGY PHYSICS,2010(11):-.
APA Cao, Junjie,Heng, Zhaoxia,Yang, Jin Min,&Cao, JJ , Henan Normal Univ, Dept Phys, Xinxiang 453007, Peoples R China.(2010).Rare Z-decay into light CP-odd Higgs bosons: a comparative study in different new physics models.JOURNAL OF HIGH ENERGY PHYSICS(11),-.
MLA Cao, Junjie,et al."Rare Z-decay into light CP-odd Higgs bosons: a comparative study in different new physics models".JOURNAL OF HIGH ENERGY PHYSICS .11(2010):-.
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