https://doi.org/10.1140/epjc/s10052-022-10029-1
Regular Article - Theoretical Physics
Radiative 
decay
1
Department of Physics, Jahrom University, P.O. Box 74137-66171, Jahrom, Iran
2
Department of Physics, University of Tehran, North Karegar Avenue, 14395-547, Tehran, Iran
3
Department of Physics, Doǧuş University, Dudullu-Ümraniye, 34775, Istanbul, Turkey
Received:
15
December
2021
Accepted:
13
January
2022
Published online:
24
January
2022
Recently, the LHCb Collaboration performed first search for the rare radiative decay and put an upper limit, 
, on its branching ratio. The measurement agrees well with existing theory prediction using SU(3) flavor symmetry method, but shows a slight tension with the previous prediction from light-cone sum rules. Inspired by this, we investigate this decay as well as other radiative decays of 
to 
and 
baryons using the form factors calculated from light-cone QCD sum rules in full theory. we obtain 
, which lies below the upper limit set by LHCb and is consistent with flavor-symmetry driven prediction. Our predictions on other channels may be checked in experiment and by other phenomenological approaches.
© The Author(s) 2022
Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
Funded by SCOAP3
