Charged Higgs Boson and Stau Phenomenology in the Simplest R-Parity Breaking Model

Details Charged Higgs Boson and Stau Phenomenology in the Simplest R-Parity Breaking Model Charged Higgs Boson and Stau Phenomenology in the Simplest R-Parity Breaking Model

1997-07-18

arxiv.org/abs/hep-ph/9707395v2

Nucl.Phys.B529:3-22,1998

Physics

High Energy Physics

High Energy Physics - Phenomenology

23 pages, including 8 figures, Latex. One figure and some paragraphs added, refering to neutrino mass and cosmology

Scientific paper

10.1016/S0550-3213(98)00357-5

We consider the charged scalar boson phenomenology in the simplest effective low-energy R-parity breaking model characterized by a bilinear violation of R-parity in the superpotential. This induces a mixing between staus and the charged Higgs boson. We show that the charged Higgs boson mass can be lower than expected in the MSSM, even before including radiative corrections. We also study the charged scalar boson decay branching ratios and show that the R-parity violating decay rates can be comparable or even bigger than the R-parity conserving ones. Moreover, if the stau is the LSP it will have only decays into standard model fermions. These features could have important implications for charged supersymmetric scalar boson searches at future accelerators.

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