Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2004-07-09
Physics
High Energy Physics
High Energy Physics - Phenomenology
9 pages, 6 figures, Proceedings, IFAE Conference, Torino, April 14-16,2004
Scientific paper
We discuss the associated production of a light Higgs boson and a light chargino pair in the process e+e- -> h chi+ chi- in the Minimal Supersymmetric Standard Model (MSSM) at linear colliders (LC) with \sqrt s=500 GeV. This process gives direct informations about the Higgs-boson coupling to light charginos, that cannot be analyzed in decay processes due to phase-space restrictions. We compute total cross sections in the regions of the MSSM parameter space where the process cannot proceed via on-shell production and subsequent decay of either heavier charginos or pseudoscalar Higgs bosons A. Cross sections up to a few 0.1 fb are allowed, making this process potentially detectable at high-luminosity linear colliders. We also compute analytically the final h momentum distributions in the limit of very heavy electron-sneutrino masses.
Ferrera Giancarlo
Mele Barbara
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