ΣcD¯ and ΛcD¯ states in a chiral quark model

W. L. Wang, F. Huang, Z. Y. Zhang, and B. S. Zou
Phys. Rev. C 84, 015203 – Published 8 July 2011

Abstract

The S-wave ΣcD¯ and ΛcD¯ states with isospin I=1/2 and spin S=1/2 are dynamically investigated within the framework of a chiral constituent quark model by solving a resonating group method equation. The results show that the interaction between Σc and D¯ is attractive, which consequently results in a ΣcD¯ bound state with a binding energy of about 542 MeV, unlike the case of the ΛcD¯ state, which has a repulsive interaction and thus is unbound. The channel-coupling effect of ΣcD¯ and ΛcD¯ is found to be negligible owing to the fact that the gap between the ΣcD¯ and ΛcD¯ thresholds is relatively large and the ΣcD¯ and ΛcD¯ transition interaction is weak.

  • Figure
  • Figure
  • Received 2 January 2011

DOI:https://doi.org/10.1103/PhysRevC.84.015203

©2011 American Physical Society

Authors & Affiliations

W. L. Wang1,2, F. Huang3, Z. Y. Zhang1,2, and B. S. Zou1,2

  • 1Institute of High Energy Physics, CAS, P. O. Box 918-4, Beijing 100049, China
  • 2Theoretical Physics Center for Science Facilities (TPCSF), CAS, Beijing 100049, China
  • 3Department of Physics and Astronomy, The University of Georgia, Athens, Georgia 30602, USA

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Vol. 84, Iss. 1 — July 2011

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