Vector and axial-vector couplings of D and D* mesons in 2+1 flavor lattice QCD


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Can K. U. , ERKOL G., Oka M., ÖZPİNECİ A., Takahashi T. T.

PHYSICS LETTERS B, vol.719, pp.103-109, 2013 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 719
  • Publication Date: 2013
  • Doi Number: 10.1016/j.physletb.2012.12.050
  • Journal Name: PHYSICS LETTERS B
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.103-109
  • Keywords: Charm mesons, Coupling constants, Lattice QCD, HEAVY MESONS, CHARM PRODUCTION, FORM-FACTORS, B-PI, LIGHT, PIONS
  • Middle East Technical University Affiliated: Yes

Abstract

Using the axial-vector coupling and the electromagnetic form factors of the D and D* mesons in 2 + 1 flavor lattice QCD, we compute the D*D pi, DD rho and D*D*rho coupling constants, which play an important role in describing the charm hadron interactions in terms of meson-exchange models. We also extract the charge radii of D and D* mesons and determine the contributions of the light and charm quarks separately. (c) 2012 Elsevier B.V. All rights reserved.