Novel scalar boson decays in SUSY with broken Rparity
Abstract
Rparity violation can induce mixing of the supersymmetric Higgs bosons with the sneutrinos at the tree level. We study the effect of this mixing on the decays of Higgs scalars as well as speutrinos in an effective model where the violation of Rparity is included in the minimal supersymmetric model through bilinear lepton number violating superpotential terms. We show that a small violation of Rparity can lead to a sizeable branching ratio for the supersymmetric Higgs boson decay mode H → _{χ}ℓ (where ξ denotes an electroweak gaugino and ℓ is either a tau neutrino or a tau lepton). Relevant constraints on Rparity violation as well as those coming from SUSY particle searches still allow the decay H → _{χ}ℓ to compete with the conventional decay H → b b, at least for some ranges of parameters of the model. Moreover, the tau sneutrino will have dominant Rparity violating decays to standard model fermions b b, τ ^{+}τ ^{} or to the invisible mode v v whenever the phase space for Rparity conserving channels is closed.
 Publication:

Nuclear Physics B
 Pub Date:
 February 1995
 DOI:
 10.1016/05503213(95)00362V
 arXiv:
 arXiv:hepph/9502237
 Bibcode:
 1995NuPhB.451....3D
 Keywords:

 High Energy Physics  Phenomenology
 EPrint:
 Latex file 14 pages, accepted for publication in Nucl. Phys. B