Autores
John Ellis, G Gelmini, C Jarlskog, Graham G Ross, José WF Valle
Fecha de publicación
1985/1/3
Revista
Physics Letters B
Volumen
150
Número
1
Páginas
142-148
Editor
North-Holland
Descripción
In some phenomenological supersymmetric models R-parity (+1 for particles, −1 for sparticles) is spontaneously broken along with tau-lepton number Lτ by a vacuum expectation value υτ of the tau sneutrino ντ. To avoid excess stellar energy loss through majorons, there should also be explicit Lτ violation through right-handed neutrinos. To have a sufficiently light ντ, either υτ is very small which is unnatural and boring, and/or the Higgs mixing parameter ϵ is very small. We find that in the limit ϵ → 0:
-both the forward-backward asymmetry in e+e− → τ+τ− and the τ lifetime are unchanged,
-Z0 → g̃gν⊥ decays are possible where ντ is an extra neutrino,
-squarks and gluinos may decay into τ or ντ,
-the photino γ̃g can decay into ν⊥ff̄ with a detectable secondary vertex,
-single production of (R-odd) sparticles may occur.
Citas totales
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Artículos de Google Académico
J Ellis, G Gelmini, C Jarlskog, GG Ross, JWF Valle - Physics Letters B, 1985