https://doi.org/10.1140/epjp/s13360-025-06328-7
Regular Article
Spectroscopic analysis of singly heavy pentaquarks in the symmetric 15-plet representation using phenomenological models
Department of Physics and Material Science, Thapar Institute of Engineering and Technology, 147004, Patiala, India
a
ankushsharma2540.as@gmail.com
Received:
18
February
2025
Accepted:
12
April
2025
Published online:
13
May
2025
We analyze the ground-state pentaquark structures with a single heavy quark (
) using various phenomenological models. The recent observations of singly heavy tetraquark structures at LHCb serve as a significant motivation for this investigation. We studied the symmetric 15-plet configuration of SU(3) flavor representation with the spin-parity assignment of 
, representing the symmetric spin state for the pentaquark systems. We employed an extended Gursey–Radicati mass formula and an effective mass scheme to compute the mass spectra of pentaquark states. Additionally, the methodology of the screened charge scheme is introduced to calculate the magnetic moment assignments, specifically for configurations involving both charm and bottom quarks. We also proposed the potential production modes originating from the weak decay of heavy baryons. We identified the strong decay channels where pentaquark transitions into a light baryon and a heavy meson. Our analysis of mass spectra, magnetic moments, and possible strong decay channels helps us to explore the inner structure of pentaquarks and their underlying quark dynamics. This work not only augments the theoretical frameworks used to describe such systems but is also helpful for future experimental pursuits at facilities like LHCb, fostering further experimental validations and discoveries in heavy quark spectroscopy.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2025
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
