Determination of α S using s-wave quarkonia decays
Abstract
α S, is determined from ϒ, J/ ψ and η c decay branching ratios. Relativistic corrections, scale dependent pQCD corrections and non-perturbative corrections derived from the ϒ or J/ ψ inclusive photon spectra are included. The latter, corresponding to 'effective gluon mass' parameters ⋍ 1 GeV are essential for a consistent overall description of the data.
- Publication:
-
Nuclear Physics B Proceedings Supplements
- Pub Date:
- March 1997
- DOI:
- 10.1016/S0920-5632(97)00049-2
- Bibcode:
- 1997NuPhS..54..247F