Speaker
Helena Kolesova
(Czech Technical University in Prague)
Description
Grand Unified Theories predict baryon instability and, for most of the models, the proton decay widths are the only quantities potentially measurable in experiments. However, the calculations of proton lifetime usually involve severe theoretical uncertainties due to, e.g., perturbative techniques employed or difficulties in estimating the large-scale threshold effects. Similarly, the proximity of the Planck scale may bring in considerable errors. We are evaluating the sizes of these errors focusing on the effects of the Planck suppressed effective operators on the flavour structure of the theory which is another important input for the proton lifetime computations. We shall discuss several schemes in which specific decay channels are found to exhibit particular robustness with respect to these issues.
Primary author
Helena Kolesova
(Czech Technical University in Prague)
Co-author
Michal Malinsky
(Charles University Prague)
