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arXiv · 1811.01478

Study of $s\to dν\barν$ rare hyperon decays within the Standard Model and new physics

Xiao-Hui Hu·Zhen-Xing Zhao
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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 $s\to dν\barν$ 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 $2 \sim 7$.

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Xiao-Hui Hu, Zhen-Xing Zhao. 2019-08-30. Study of $s\to dν\barν$ rare hyperon decays within the Standard Model and new physics. https://doi.org/10.1088/1674-1137%2F43%2F9%2F093104

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