Affordable Access

Publisher Website

Pionic coupling constants of heavy mesons in the quark model

Authors
Journal
Physics Letters B
0370-2693
Publisher
Elsevier
Publication Date
Volume
452
Identifiers
DOI: 10.1016/s0370-2693(99)00255-5
Disciplines
  • Physics

Abstract

Abstract We analyse pionic couplings of heavy mesons combining PCAC with the dispersion quark model to calculate the relevant transition form factors. Ground states and radial excitations are considered. For the ground state coupling constants the values g ̂ =0.5±0.02 in the heavy quark limit, and g B ∗Bπ =40±3 , g D ∗Dπ =16±2 are obtained. A sizable suppression of the coupling constants describing the pionic decays of the radial excitations is observed.

There are no comments yet on this publication. Be the first to share your thoughts.