Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1998-05-07
Phys.Lett.B433:346-354,1998
Physics
High Energy Physics
High Energy Physics - Phenomenology
LaTeX with equation.sty, 3 PS figures. Version to appear in PLB: Added one paragraph concerning charged Higgs searches at the
Scientific paper
10.1016/S0370-2693(98)00712-6
We point out that present experimental limits from searches for neutral Higgs bosons at LEP already imply stringent lower bounds on the mass of the charged Higgs boson in the Minimal Supersymmetric Standard Model (MSSM); these bounds are especially severe for low values of \tanb ($\tanb \leq 3$), where the $H^+ \bar{t} b$ coupling is large. However, these indirect constraints are much weaker in simple extensions of the MSSM Higgs sector involving the introduction of an extra U(1) gauge group or an extra $SU(2) \times U(1)_Y$ Higgs singlet field; in the latter case charged Higgs bosons can even be light enough to be pair produced at LEP.
Drees Manuel
Ma Ernest
Pandita Pran N.
Roy David P.
Vempati Sudhir K.
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