Lepton-specific two-Higgs-doublet model: Experimental constraints and implication on Higgs phenomenology
- College of Physics and Information Engineering, Henan Normal University, Xinxiang 453007 (China)
- Key Laboratory of Frontiers in Theoretical Physics, Institute of Theoretical Physics, Academia Sinica, Beijing 100190 (China)
We examine various direct and indirect constraints on the lepton-specific two-Higgs-doublet model and scrutinize the property of the Higgs bosons in the allowed parameter space. We find that in the allowed parameter space the CP-odd Higgs boson A is rather light (m{sub A}<30 GeV with 95% possibility), which is composed dominantly by the leptonic Higgs and decays dominantly into {tau}{sup +}{tau}{sup -}; while the standard-model-like Higgs boson h (responsible largely for electroweak symmetry breaking) decays dominantly in the mode h{yields}AA{yields}4{tau} with a large decay width, which will make the Higgs discovery more difficult at the LHC, whereas this scenario predicts a branching ratio Br(Z{yields}{tau}{sup +}{tau}{sup -}A) ranging from 10{sup -5} to 10{sup -4}, which may be accessible at the GigaZ option of the International Linear Collider.
- OSTI ID:
- 21325192
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 80, Issue 7; Other Information: DOI: 10.1103/PhysRevD.80.071701; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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