Article

Zeitschrift für Physik C Particles and Fields

, Volume 17, Issue 3, pp 229-242

Proton decay in terms of an effective baryon-lepton transition

  • W. LuchaAffiliated withInstitut für Theoretische Physik, Universität Wien
  • , H. StremnitzerAffiliated withInstitut für Theoretische Physik, Universität Wien

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Abstract

We calculate the two-body decay rates for the hadronic and electromagnetic decays of proton and neutron in terms of the effective baryon-lepton transition matrix element. Further ingredients like PCAC and vector meson dominance are used. We compute these transition amplitudes within the framework of a relativistic quark model involving Bethe-Salpeter amplitudes and present the nucleon lifetimes and branching ratios of various decay modes for three different grand unification models.