1999/07/03 by E. Torrente-Lujan, E. Torrente-Luján, Torrente-Lujan, E.
Computer Science · Physics and Astronomy · #Computational Physics and Python Applications #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.48550/arxiv.hep-ph/9907220
Based on work made in collaboration with M. A. D\'ıaz and J. W. F. Valle and presented at: ``TMR Network on Physics beyond the SM''. Trieste, February 1999.}
arxiv created 1999/07/03 · openalex publication_date 1999/07/03 · arxiv updated 2009/11/30 · openalex created_date 2024/04/11 · openalex updated_date 2026/07/28
The experimental measurement of B(b → sγ) imposes important constraints on the charged Higgs boson mass in the MSSM. We show that by adding bilinear R--Parity violation (BRpV) in the tau sector, these bounds are relaxed. The bound on mH± in the MSSM--BRpV model is \gsim 200-250 GeV for the the heavy squark limit. For lighter squarks, light charged Higgs bosons can be reconciled with B(b → sγ) only if there is also a light chargino. In the BRpV model if we impose mχ±1>90 GeV mH± \gsim 75 GeV, around 30 GeV down from the MSSM. In this case the charged Higgs bosons would be observable at LEP II. The relaxation of the bounds is due mainly to the fact that charged Higgs bosons mix with staus and they contribute importantly to B(b → sγ).