Phenomenology of supersymmetry with broken R-parity
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Phenomenology of supersymmetry with broken R-parity

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Phenomenology of supersymmetry with broken R-parity

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Ellis, John; Gelmini, Graciela; Jarlskog, Cecilia; Ross, Graham G.; Furtado Valle, José Wagner Perfil
Aquest document és un/a article, creat/da en: 1985
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 ɛ is very small. We find that in the limit ɛ --> 0: -both the forward-backward asymmetry in e+e- --> τ+τ- and the τ lifetime are unchanged, -Z0 --> g~gν⊥ decays are possible where ντ is an extra neutrino, -squarks and gluinos may decay into τ or ντ, -the photino γ~g can decay into ν⊥ff¯ with a detectable secondary vertex, -single production of (R-odd) sparticles may occur.

    Ellis, John Gelmini, Graciela Jarlskog, Cecilia Ross, Graham G. Furtado Valle, José Wagner 1985 Phenomenology of supersymmetry with broken R-parity Physics Letters B 150 1-3 142 148
http://dx.doi.org/10.1016/0370-2693(85)90157-1
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