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arXiv · 1911.05102

Baryon-Number-Violating Nucleon and Dinucleon Decays in a Model with Large Extra Dimensions

Sudhakantha Girmohanta·Robert Shrock
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Abstract

It is known that limits on baryon-violating nucleon decays do not, in general, imply corresponding suppression of $n - \bar n$ transitions. In the context of a model with fermions propagating in higher dimensions, we investigate a related question, namely the implications of limits on $\Delta L=-1$ proton and bound neutron decays mediated by four-fermion operators for rates of nucleon decays mediated by $k$-fermion operators with $k =6$ and $k=8$. These include a variety of nucleon and dinucleon decays to dilepton and trilepton final states with $\Delta L=-3, \ -2, \ 1$, and $2$. We carry out a low-energy effective field theory analysis of relevant operators for these decays and show that, in this extra-dimensional model, the rates for these decays are strongly suppressed and hence are in accord with experimental limits.

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Sudhakantha Girmohanta, Robert Shrock. 2019-11-12. Baryon-Number-Violating Nucleon and Dinucleon Decays in a Model with Large Extra Dimensions. https://doi.org/10.1103/physrevd.101.015017

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