New production mechanism of neutral Higgs bosons with right scalar tau neutrino as the LSP

C.-L. Chou, H.-L. Lai, C.-P. Yuan
2000 Physics Letters B  
Motived by the neutrino oscillation data, we consider the lightest tau sneutrino ν̃_τ_1 (which is mostly the right tau sneutrino) to be the lightest supersymmetric particle (LSP) in the framework of the minimal supersymmetric Standard Model. Both the standard and the non-standard trilinear scalar coupling terms are included for the right tau sneutrino interactions. The decay branching ratio of ν̃_τ_2→ν̃_τ_1+ h^0 can become so large that the production rate of the lightest neutral Higgs boson
more » ... tral Higgs boson (h^0) can be largely enhanced at electron or hadron colliders, either from the direct production of ν̃_τ_2 or from the decay of charginos, neutralinos, sleptons, and the cascade decay of squarks and gluinos, etc. Furthermore, because of the small LSP annihilation rate, ν̃_τ_1 can be a good candidate for cold dark matter.
doi:10.1016/s0370-2693(00)00933-3 fatcat:mpcj6uaqx5d73khrvpjhm74v2e