• Corpus ID: 249953538

Weak radiative hyperon decays in covariant baryon chiral perturbation theory

@inproceedings{Shi2022WeakRH,
  title={Weak radiative hyperon decays in covariant baryon chiral perturbation theory},
  author={Rui-Xiang Shi and Shuang-Yi Li and Jun-Xu Lu and Li-Sheng Geng},
  year={2022}
}
Weak radiative hyperon decays, important to test the strong interaction and relevant in searches for beyond the standard model physics, have remained puzzling both experimentally and theoretically for a long time. The recently updated branching fraction and first measurement of the asymmetry parameter of Λ → n γ by the BESIII Collaboration further exacerbate the issue, as none of the existing predictions can describe the data. We show in this letter that the covariant baryon chiral perturbation… 

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      National Natural Science Foundation of China under Grant No.12105006 and China Postdoctoral Science Foundation under Grant No. 2021M690008. * Corresponding author: lisheng