Nucleon and dinucleon decays to leptonic final states in a left-right symmetric model with large extra dimensions

Sudhakantha Girmohanta

doi:10.1140/epjc/s10052-021-08936-w

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2024 Impact factor 4.8

Particles and Fields

Open Access

Eur. Phys. J. C (2021) 81: 143
https://doi.org/10.1140/epjc/s10052-021-08936-w

Regular Article – Theoretical Physics

Nucleon and dinucleon decays to leptonic final states in a left-right symmetric model with large extra dimensions

Sudhakantha Girmohanta^a

Department of Physics and Astronomy, C. N. Yang Institute for Theoretical Physics, Stony Brook University, 11794, Stony Brook, NY, USA

^a sudhakantha.girmohanta@stonybrook.edu

Received: 22 July 2020
Accepted: 2 February 2021
Published online: 10 February 2021

Abstract

We consider baryon-number-violating nucleon and dinucleon decays to leptonic final states in the context of a left-right symmetric (LRS) model with large extra dimensions. Specifically, we study (a) nucleon to trilepton decays with $Δ B = - 1$ $\varDelta B=-1$ and $Δ L = - 3$ $\varDelta L=-3$ , and (b) dinucleon to dilepton decays with $Δ B = - 2$ $\varDelta B=-2$ and $Δ L = - 2$ $\varDelta L=-2$ . In the LRS model, $B - L$ $$B-L$$ is gauged and is spontaneously broken by a Higgs vacuum expectation value $v_{R}$ $$v_R$$ , which characterizes the scale at which processes violating $B - L$ $$B-L$$ occur. We show that together with the lower bound on $v_{R}$ $$v_R$$ from experimental limits on n- $\bar{n}$ ${\bar{n}}$ oscillations, constraints from searches for other nucleon decay modes imply sufficient suppression of these nucleon to trilepton and dinucleon to dilepton decay modes in this model to agree with experimental bounds.

© The Author(s) 2021

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