Speaker
Takayuki Matsuki
(Tokyo Kasei University)
Summary
Only explanation for the mass gap between two spin multiplets has been given
by an effective Lagrangian approach, i.e., Goldberger-Treiman relation
proposed by Bardeen et. al. Bardeen and Hill related their expression with a
constituent quark mass and claimed linear dependence on its mass. Studying
our semirelativistic potential model, we find a simple relation between the mass
gap and a light quark mass. Our relation seems to hold very well for D and Ds
heavy mesons. This may give some insight into the DsJ problem intrinsic to
heavy mesons. We need to find Bs(0+) and Bs(1+) mesons to confirm our
prediction. We also try to give some intuitive explanation for our relation.
Primary author
Takayuki Matsuki
(Tokyo Kasei University)
Co-authors
Dr
Kazutaka Sudoh
(KEK)
Dr
Toshiyuki Morii
(Kobe University)
