The mass of the charged Higgs boson in the minimal supersymmetric standard model with explicit CP violation at 1-loop level

Authors: Ham S.W.¹; Oh S.K.¹; Yoo E.J.¹; Lee H.K.²

Source: Journal of Physics G: Nuclear and Particle Physics, Volume 27, Number 1, 2001 , pp. 1-19(19)

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Abstract:

The mass of the charged Higgs boson at the 1-loop level is investigated, assuming the CP symmetry to be violated explicitly in the Higgs sector of the minimal supersymmetric standard model (MSSM). It is found that there is a parameter region of the MSSM where the presence of explicit CP violation in the Higgs sector yields negative radiative corrections to the charged Higgs boson mass. Thus, the charged Higgs boson in the MSSM may have as low a mass as 60?GeV at the 1-loop level, if the CP symmetry is violated. This lower bound may be improved by the Higgs search at LEP2, which imposes experimental constraints on the charged Higgs mass, as well as on the masses of the neutral Higgs bosons. Hence, LEP2 can constrain experimentally the charged Higgs mass to be not smaller than 109?GeV under our assumption. In addition, it sets 75?GeV as the lower bound on the mass of the lightest neutral Higgs boson, and 84?GeV for that of the next-to-lightest neutral Higgs boson.

Language: English

Document Type: Miscellaneous

Affiliations: 1: Department of Physics, Konkuk University, Seoul 143-701, Korea 2: Department of Physics, Hanyang University, Seoul 133-791, Korea

Publication date: 2001-01-01