Vector-boson decay modes of the nucleon in N=1 supergravity model

Details Vector-boson decay modes of the nucleon in N=1 supergravity model Vector-boson decay modes of the nucleon in N=1 supergravity model

Apr 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986phrvd..33.1894y&link_type=abstract

Physical Review D (Particles and Fields), Volume 33, Issue 7, 1 April 1986, pp.1894-1899

Physics

7

Leptonic, Semileptonic, And Radiative Decays, Supergravity, Supersymmetry

Scientific paper

A general analysis of the vector-boson decay modes of the nucleon in N=1 supergravity unified models is carried out using the full set of W-gaugino, gluino, and Z-gaugino dressing diagrams of LLLL and RRRR dimension-five operators. It is shown that the third-generation effect with a heavy top quark (mt>~40 GeV) leads to an enhancement of the vector-boson decay modes ν¯ρ and ν¯ω and a relative suppression of ν¯K* modes in domains discussed recently where ν¯π modes dominate the ν¯K modes of the nucleon decay. The parameter space where these enhancements occur is numerically investigated and is found to be non-negligible. Branching ratios and partial lifetimes for the decay modes for a class of models are given.

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