Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2006-11-17
Phys.Lett.B652:325-330,2007
Physics
High Energy Physics
High Energy Physics - Phenomenology
12 pages, title and text modified, version to appear in Phys. Lett. B
Scientific paper
10.1016/j.physletb.2007.07.024
In some class of supersymmetric models, small neutrino mass is given as a consequence of the supersymmetry (SUSY) breaking. Phenomenologically interesting features of this scenario are as follows: (i) the right-handed sneutrino mass could be as low as TeV scale due to the Giudice-Masiero mechanism, and (ii) a scalar trilinear interaction of Higgs-slepton-(right-handed) sneutrino could be sizable without suppression by the small neutrino Yukawa coupling. We study some phenomenological aspects of this scenario focusing on the scalar trilinear interaction. We show that the 1-loop correction by sneutrino exchange to the lightest Higgs boson mass destructively interferes with top-stop contributions in the minimal SUSY Standard Model. We find that a decay of charged Higgs boson into sneutrino and charged slepton is sizably enhanced and hence it gives rise to a distinctive signal at future collider experiments in some parameter space.
Cho Gi-Chol
Kaneko Satoru
Omote Aya
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