Magnetic transitions and radiative decays of singly heavy baryons

A pion mean-field approach allows one to investigate light and singly heavy baryons on an equal footing. In the large Nc limit, the light and singly heavy baryons are viewed respectively as Nc and Nc−1 valence quarks bound by the pion mean fields created self-consistently, since a heavy quark can be...

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Bibliographic Details
Main Authors: Ghil-Seok Yang, Hyun-Chul Kim
Format: Article
Language:English
Published: Elsevier 2020-02-01
Series:Physics Letters B
Online Access:http://www.sciencedirect.com/science/article/pii/S0370269319308640
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Summary:A pion mean-field approach allows one to investigate light and singly heavy baryons on an equal footing. In the large Nc limit, the light and singly heavy baryons are viewed respectively as Nc and Nc−1 valence quarks bound by the pion mean fields created self-consistently, since a heavy quark can be regarded as a static color source in the limit of the infinitely heavy quark mass. The transition magnetic moments of the baryon sextet are determined entirely by using the parameters fixed in the light-baryon sector without any additional parameters introduced. Assuming that the transition E2 moments are small, we are able to compute the radiative decay rates of the baryon sextet. The numerical results are discussed, being compared with those from other approaches. Keywords: Heavy baryons, Radiative decays, Pion mean fields, The chiral quark-soliton model
ISSN:0370-2693