Abstract
observed by the LHCb collaboration is confirmed as a pentaquark and its structure, production, and decay behaviors attract great attention from theorists and experimentalists. Since its mass is very close to sum of and masses, it is naturally tempted to be considered as a molecular state composed of and . Moreover, is observed in the channel with final state, requiring that isospin conservation is an isospin- eigenstate. In the literature, several groups used various models to estimate its spectrum. We systematically study the pentaquarks within the framework of the Bethe-Salpeter equation; thus is an excellent target because of the available data. We calculate the spectrum of in terms of the Bethe-Salpter equations and further study its decay modes. Some predictions on other possible pentaquark states that can be tested in future experiments are made.
- Received 5 November 2019
DOI:https://doi.org/10.1103/PhysRevD.101.014024
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