# Rare Z-decay into light CP-odd Higgs bosons: a comparative study in different new physics models

@article{Cao2010RareZI,
title={Rare Z-decay into light CP-odd Higgs bosons: a comparative study in different new physics models},
author={Junjie Cao and Zhaoxia Heng and Jin Min Yang},
journal={Journal of High Energy Physics},
year={2010},
volume={2010},
pages={1-22}
}
• Published 12 July 2010
• Physics
• Journal of High Energy Physics
Various new physics models predict a light CP-odd Higgs boson (labeled as a) and open up new decay modes for Z-boson, such as $Z \to \bar{f}fa$, Z → aγ 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… Expand
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#### References

SHOWING 1-10 OF 131 REFERENCES
The NMSSM Close to the R-symmetry Limit and Naturalness in h ---> aa Decays for m(a) < 2m(b)
• Physics
• 2007
Dominant decay of a SM-like Higgs boson into particles beyond those contained in the minimal supersymmetric standard model has been identified as a natural scenario to avoid fine tuning inExpand
B meson dileptonic decays in the next-to-minimal supersymmetric model with a light CP-odd Higgs boson
• Physics
• 2008
In the next-to-minimal supersymmetric model (NMSSM) a light CP-odd Higgs boson is so far allowed by current experiments, which, together with a large tan beta, may greatly enhance the rare dileptonicExpand
Can the Higgs bosons of the minimal supersymmetric model be detected at a hadron collider via two-photon decays?
• Physics, Medicine
• Physical review. D, Particles and fields
• 1988
The branching ratio for decays as a function of Higgs-boson mass for a selection of neutralino and chargino mass-matrix parameters is investigated and it is concluded that this mode of detection is probably not viable given the known two-photon continuum backgrounds. Expand
A light CP-odd Higgs boson and the muon anomalous magnetic moment
We amalgamate the many experimental limits on the ab coupling of a light CP-odd Higgs boson, a, including model-dependence coming from the ratio of the at to the ab coupling. We then employ theseExpand
Search For A Non-minimal Higgs boson Produced In the Reaction e+e- -> hZ*
• Physics
• 1993
A data sample corresponding to 1.23 million hadronic Z decays collected by the ALEPH detector at LEP has been searched for signals of the production of a non-minimal CP-even Higgs boson h in theExpand
LHC discovery potential of a leptophilic Higgs boson
• Physics
• 2009
In this work, we examine a two-Higgs-doublet extension of the standard model in which one Higgs doublet is responsible for giving mass to both up- and down-type quarks, while a separate doublet isExpand
Flavor changing Z decays from scalar interactions at a giga Z linear collider
• Physics
• 2002
The flavor changing decay Z -> d_I \bar{d}_J is investigated with special emphasis on the b \bar{s} final state. Various models for flavor violation are considered: two Higgs doublet models (2HDM's),Expand
Rare decays with a light CP-odd Higgs Boson in the NMSSM
• Physics
• 2008
We have previously proposed a light pseudoscalar Higgs boson in the next-to-minimal supersymmetric standard model (NMSSM), the A10, as a candidate to explain the HyperCP observations in Σ+ → pμ+μ−.Expand
Two Higgs doublet model of type II facing flavor physics data
• Physics
• 2010
We discuss tests of the charged Higgs sector of the two Higgs doublet model (2HDM) of type II in the light of recent flavor physics data. Particular attention is paid to recent measurement of purelyExpand
Models of Yukawa interaction in the two Higgs doublet model, and their collider phenomenology
• Physics
• 2009
Possible models of Yukawa interaction are discussed in the two Higgs doublet model (THDM) under the discrete symmetry imposed to avoid the flavor changing neutral current at the leading order. It isExpand