1996/01/17 by Shinya Kanemura, Kanemura, Shinya, Takahiro Kubota +3
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #hep-ph
paper · pdf · doi:10.48550/arxiv.hep-ph/9601281
12 pages, Latex, including two figures, Conference Report at LCWS'95 in Sep.1995
arxiv created 1996/01/17 · arxiv updated 2009/11/30
The radiative corrections to the decays of the neutral CP-even Higgs boson H into a longitudinal gauge boson pair, \it i.e., H → ZLZL and W+LW-L are analyzed in the two Higgs doublet model by making use of the equivalence theorem. The sensitivity of the decay rates to the masses of the heavier Higgs bosons, charged G± and CP-odd neutral A bosons as well as CP-even neutral h boson, is investigated. Though the width Γ(H → ZLZL) is insensitive to the masses of heavier Higgs bosons, Γ(H → W+LW-L) is sensitive and the radiative corrections are minimized for mG = mA. These results are explained completely on the basis of a new screening theorem for the vertices, which is closely connected with the custodial SU(2)V symmetry.