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Radiative decays of the $Σ_{c}$ , $Ξ_{c}^{'}$ , and $Ω_{c}$ charmed baryons

Unidad Académica de Física, Universidad Autónoma de Zacatecas, Solidaridad, esquina la Bufa S/N, Zacatecas, 98060, Mexico

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

Unidad Académica de Física, Universidad Autónoma de Zacatecas, Solidaridad, esquina la Bufa S/N, Zacatecas, 98060, Mexico

Departamento de Física, DCI, Campus León, Universidad de Guanajuato, Loma del Bosque 103, Lomas del Campestre, 37150, León, Guanajuato, Mexico; Dipartimento di Fisica, Università di Genova, Via Dodecaneso 33, 16146 Genova, Italy INFN, Sezione di Genova, Via Dodecaneso 33, 16146 Genova, Italy and 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: hugo.garcia.t@tec.mx
^†Contact author: ailierrivero@gmail.com

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Phys. Rev. D 113, 093001 – Published 6 May, 2026

DOI: https://doi.org/10.1103/srjs-mrs3

Abstract

In this work, we study the radiative decays of the $Σ_{c}$ , $Ξ_{c}^{'}$ , and $Ω_{c}$ charmed baryons, which belong to the flavor sextet ( $6_{F}$ ), within the constituent quark model formalism. The electromagnetic transitions are calculated from the ground and $P$ -wave states to ground states, as well as from the second shell states to both the ground and $P$ -wave final states. These decays play a crucial role in confirming the existence of certain resonances when strong decays are not allowed. Moreover, electromagnetic decay widths are particularly useful for identifying resonances when states have the same mass and total decay width. A relevant case is the $Ω_{c} (3327)$ state, whose branching ratios between the strong decay channels are comparable; thus, the radiative decay widths may help assign this state. We also make the assignment of the recently discovered $Ξ_{c}^{'} (2923)^{+}$ baryon, which is consistent with being the isospin partner of the $Ξ_{c}^{'} (2923)^{0}$ . 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 in the charm sector. Throughout our calculations, we account for uncertainties arising from both experimental and model-dependent errors.

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Phys. Rev. D 113, 093001– Published 6 May, 2026

Vol. 113, Iss. 9 — 1 May 2026

Received 16 December 2025
Accepted 26 March 2026

DOI: https://doi.org/10.1103/srjs-mrs3

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 $Σ_{c}$ , $Ξ_{c}^{'}$ , and $Ω_{c}$ charmed baryons

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Radiative decays of the Σc, Ξc′, and Ωc charmed baryons

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Radiative decays of the $Σ_{c}$ , $Ξ_{c}^{'}$ , and $Ω_{c}$ charmed baryons