article.page.titleprefix Reanalysis of rare radiative Ξ− 𝑏→Ξ−𝛾 decay in QCD
Date
2024-04-30
Journal Title
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Volume Title
Publisher
PHYSICAL REVIEW D
Abstract
The upper limit of the branching ratio of the rare $\Xi_b^-\rightarrow \Xi^- \gamma$ decay is obtained as $BR(\Xi_b^-\rightarrow \Xi^- \gamma)<1.3\times10^{-4}$ by the LHCb. In the present work we study this decay within the light cone QCD sum rules employing the $\Xi_b$ distribution amplitudes. At first stage, the form factors entering the $\Xi_b^-\rightarrow \Xi^- \gamma$ decay are obtained. Next, using the results for the form factors the corresponding branching ratio for this decay is estimated to be $BR(\Xi_b^-\rightarrow \Xi^- \gamma)=(4.8\pm 1.3)\times 10^{-5}$. This value lies below the upper limit established by the LHCb collaboration. Our finding for the branching ratio is also compared with the results of the other theoretical approaches existing in the literature.
Description
Open Access; Published by PHYSICAL REVIEW D; https://doi.org/10.1103/PhysRevD.109.054020; T. M. Aliev, A. Ozpineci, Physics Department, Middle East Technical University, 06531, Ankara, Turkey; Y. Sarac, Electrical and Electronics Engineering Department, Atilim University, 06836 Ankara, Turkey, https://orcid.org/0000-0002-0448-9929.
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Citation
https://hdl.handle.net/20.500.14411/2038