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Title: Heavy baryons in the large Nc limit

It is shown that in the large Nc limit heavy baryon masses can be estimated quantitatively in a 1/Nc expansion using the Hartree approximation. The results are compared with available lattice calculations for different values of the ratio between the square root of the string tension and the heavy quark mass tension independent of Nc. Using a potential adjusted to agree with the one obtained in lattice QCD, a variational analysis of the ground state spin averaged baryon mass is performed using Gaussian Hartree wave functions. Relativistic corrections through the quark kinetic energy are included. Lastly, the results provide good estimates for the first sub-leading in 1/Nc corrections.
Authors:
 [1] ;  [1] ;  [2] ;  [2]
  1. Univ. de Granada, Granada (Spain)
  2. Hampton Univ., Hampton, VA (United States); Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
Publication Date:
Report Number(s):
JLAB-THY-15-2102; DOE/OR/23177-3466; arXiv:1507.04667
Journal ID: ISSN 0370-2693; PII: S0370269315007054; NSF Grant PHY-1307413
Grant/Contract Number:
AC05-06OR23177
Type:
Published Article
Journal Name:
Physics Letters. Section B
Additional Journal Information:
Journal Name: Physics Letters. Section B; Journal ID: ISSN 0370-2693
Publisher:
Elsevier
Research Org:
Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
Sponsoring Org:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
Country of Publication:
United States
Language:
English
OSTI Identifier:
1222236
Alternate Identifier(s):
OSTI ID: 1217532