Bounds on $ΔB=1$ Couplings in the Supersymmetric Standard Model

J. L. Goity; Marc Sher

doi:10.1016/0370-2693(96)01076-3

paper

Bounds on $Δ B = 1$ Couplings in the Supersymmetric Standard Model

arXiv:hep-ph/9503472 · doi:10.1016/0370-2693(96)01076-3

Abstract

The most general supersymmetric model contains baryon number violating terms of the form $\lm_{ijk}\ \ov{D}_i\ \ov{D}_j\ \ov{U}_k$ in the superpotential. We reconsider the bounds on these couplings, assuming that lepton number conservation ensures proton stability. These operators can mediate $n-\ov{n}$ oscillations and double nucleon decay. We show that neutron oscillations do not, as previously claimed, constrain the $\lm_{dsu}$ coupling; they do provide a bound on the $\lm_{dbu}$ coupling, which we calculate. We find that the best bound on $\lm_{dsu}$ arises from double nucleon decay into two kaons. There are no published limits on this process; experimenters are urged to examine this nuclear decay mode. Finally, the other couplings can be bounded by the requirement of perturbative unification.

arXiv commentLatex, 3 pages, no figures. Talk given by MS at the Beyond the Standard Model IV Conference, 13-18 December, 1994, Lake Tahoe, California.

Bounds on ΔB=1 Couplings in the Supersymmetric Standard Model

Abstract

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Bounds on $Δ B = 1$ Couplings in the Supersymmetric Standard Model