Abstract
Inspired by the recent discovery of the by the LHCb Collaboration, we study the magnetic moments of the spin- doubly charmed baryons up to the next-to-leading order in covariant baryon chiral perturbation theory with the extended-on-mass-shell renormalization scheme. There are three low energy constants at this order: , , and . The latest lattice QCD simulations allow us to fix a combination of and , while the axial-vector coupling can be determined in three different ways: by fitting to the lattice QCD data, by the quark model, or by the heavy antiquark diquark symmetry. The magnetic moments of the spin- doubly charmed baryons, and , can then be predicted. We compare our results with those obtained in the heavy baryon chiral perturbation theory and other approaches, and point out some inconsistencies between the lattice QCD simulations and the quark model.
- Received 3 July 2018
DOI:https://doi.org/10.1103/PhysRevD.98.014040
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.
Published by the American Physical Society