Eur. Phys. J. C 16, 367-369
Higgs induced light leptoquark-diquark mixing and proton decay
Mehta Research Institute, Chhatnag Road, Jhusi, Allahabad-211019, India
Received: 8 December 1999 / Revised version: 9 March 2000 /
Published online: 8 June 2000 - © Springer-Verlag 2000
In low energy phenomenology, to avoid the strong constraints of proton decay it is usually assumed that light ( GeV) leptoquarks couple only to quark-lepton pairs, and light diquarks couple only to quark pairs. In this paper we present two specific examples where the Higgs induced mixing between leptoquarks and diquarks through trilinear interaction terms reintroduces the troublesome couplings and gives rise to proton decay. The bound on the unknown parameters of this scenario that arise from the proton lifetime has also been derived.
Copyright Società Italiana di Fisica, Springer-Verlag 2000