Singular binding dependence in the hadronic widths of 1 ++ and 1 +- heavy quark antiquark bound states
Abstract
The annihilation rates into hadrons of P-wave heavy quark-antiquark bound states are calculated within SU(3) colour gauge theory (in particular for the charm scheme). An interesting feature we find is a logarithmic divergence for small binding for the states 1 ++ and 1 +-. Implications for the asymptotic freedom approach to the decay rates of the new particles are discussed. An attempt to use quantitatively the obtained results for all the C-even P-waves gives Γann(0 ++) : Γann(2 ++) : Γann(1 ++) ≈ 15 : 4 : 1.
- Publication:
-
Physics Letters B
- Pub Date:
- April 1976
- DOI:
- 10.1016/0370-2693(76)90729-2
- Bibcode:
- 1976PhLB...61..465B