In this paper we present a complete next-to-leading order QCD calculation of the χJ (3PJ;J=0,1,2) hadronic decay width. We include the NLO colour-octet contribution, as defined in the Bodwin, Braaten and Lepage formalism. We extract an estimate of the colour-octet parameter \height\ from the charmonium decay data.
Cite
@article{arxiv.hep-ph/9603439,
title = {Colour-octet NLO QCD corrections to hadronic $\chi_J$ decays},
author = {Andrea Petrelli},
journal= {arXiv preprint arXiv:hep-ph/9603439},
year = {2010}
}