Study of $s\to d\nu \bar{\nu }$ rare hyperon decays within the Standard Model and new physics

Abstract

FCNC processes offer important tools to test the Standard Model (SM), and to search for possible new physics. In this work, we investigate the $s\to d\nu \bar{\nu }$ rare hyperon decays in SM and beyond. We find that in SM the branching ratios for these rare hyperon decays range from $10^{-14}$ to $10^{-11}$. When all the errors in the form factors are included, we find that the final branching fractions for most decay modes have an uncertainty of about $5\%$ to $10\%$. After taking into account the contribution from new physics, the generalized SUSY extension of SM and the minimal 331 model, the decay widths for these channels can be enhanced by a factor of $2\sim 7$.

9 pages, 5 tables

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Cited by in corpus (6)

• New physics in $s\to d$ semileptonic transitions: rare hyperon vs. kaon decays
• Exploring leptoquark effects in hyperon and kaon decays with missing energy
• Flavor-changing hyperon decays with light invisible bosons
• Baryonic heavy-to-light form factors induced by tensor current in light-front approach
• $\Delta S=2$ nonleptonic hyperon decays as probes of new physics
• Study of Nonstandard Interactions in Rare Decays of Hyprons with Missing Energy