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Radiative decays of the second shell $Λ_{b}$ and $Ξ_{b}$ bottom baryons

Departamento de Física, DCI, Campus León, Universidad de Guanajuato, Loma del Bosque 103, Lomas del Campestre, C.P. 37150, León, Guanajuato, Mexico, Dipartimento di Fisica, Università di Genova, Via Dodecaneso 33, 16146 Genova, Italy, and INFN, Sezione di Genova, Via Dodecaneso 33, 16146 Genova, Italy

Tecnologico de Monterrey, Escuela de Ingenieria y Ciencias, General Ramon Corona 2514, Zapopan 45138, Mexico

INFN, Sezione di Genova, Via Dodecaneso 33, 16146 Genova, Italy

Secretaría de Ciencia, Humanidades, Tecnología e Innovación, Insurgentes Sur 1582. Colonia Crédito Constructor, Benito Juárez, 03940, Ciudad de México, Mexico, Departamento de Física, DCI, Campus León, Universidad de Guanajuato, Loma del Bosque 103, Lomas del Campestre 37150, León, Guanajuato, Mexico, and Dual CP Institute of High Energy Physics, 28045, Colima, Mexico

^*Contact author: andres.ramirez@tec.mx

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Phys. Rev. D 112, 072014 – Published 29 October, 2025

DOI: https://doi.org/10.1103/ng36-kn1p

Abstract

In this work, we investigate the radiative decays of the $Λ_{b}$ and $Ξ_{b}$ bottom baryons, which belong to the flavor antitriplet ( ${\bar{3}}_{F}$ ), within the constituent quark model formalism. The electromagnetic transitions are calculated from the second shell states to both the ground and $P$ -wave final states. These decays may help confirm the existence of certain resonances. Moreover, electromagnetic decay widths provide additional information that can be particularly useful for distinguishing resonances with the same mass and total decay width. This study presents, for the first time, the calculation of electromagnetic decays for $D_{ρ}$ -wave states, $ρ - λ$ mixed states, and $ρ$ -mode radially excited states. Throughout our calculations, we account for uncertainties arising from both experimental and model-dependent errors.

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Phys. Rev. D 112, 072014– Published 29 October, 2025

Vol. 112, Iss. 7 — 1 October 2025

Received 26 May 2025
Accepted 10 September 2025

DOI: https://doi.org/10.1103/ng36-kn1p

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP³.

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Radiative decays of the second shell $Λ_{b}$ and $Ξ_{b}$ bottom baryons

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Radiative decays of the second shell Λb and Ξb bottom baryons

Abstract

Physics Subject Headings (PhySH)

Article Text

References (42)

Radiative decays of the second shell $Λ_{b}$ and $Ξ_{b}$ bottom baryons