Employing nucleon decay as a fingerprint of SUSY GUT models using \texttt{SusyTCProton}
arXiv:2011.15026 · doi:10.1007/JHEP06(2021)022
Abstract
While the observation of nucleon decay would be a smoking gun of Grand Unified Theories (GUTs) in general, the ratios between the decay rates of the various channels carry rich information about the specific GUT model realization. To investigate this fingerprint of GUT models in the context of supersymmetric (SUSY) GUTs, we present the software tool \texttt{SusyTCProton}, which is an extension of the module \texttt{SusyTC} to be used with the \texttt{REAP} package. It allows to calculate nucleon decay rates from the relevant dimension five GUT operators specified at the GUT scale, including the full loop-dressing at the SUSY scale. As an application, we investigate the fingerprints of two example GUT toy models with different flavor structures, performing an MCMC analysis to include the experimental uncertainties for the charged fermion masses and CKM mixing parameters. While both toy models provide equally good fits to the low energy data, we show how they could be distinguished via their predictions of ratios for nucleon decay rates. Together with \texttt{SusyTCProton} we also make the additional module \texttt{ProtonDecay} public. It can be used independently from \texttt{REAP} and allows to calculate nucleon decay rates from given and operator coefficients (accepting the required SUSY input for the case in SLHA format). The functionality can also be used to calculate nucleon decay in non-SUSY GUTs.
arXiv commentNote: 34 pages, 6 figures, 5 tables. The packages ProtonDecay and SusyTCProton can be downloaded from http://particlesandcosmology.unibas.ch/downloads/protondecay.html
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