Octet contributions in radiative upsilon decays
High Energy Physics - Phenomenology
2007-05-23 v1 High Energy Physics - Experiment
Abstract
We analyze the end-point region of the photon spectrum in semi-inclusive radiative decays of very heavy quarkonium (m alpha_s^2 >> Lambda_QCD). The S- and P-wave octet shape functions are calculated. When they are included in the analysis of the photon spectrum of the Upsilon (1S) system the agreement with data becomes excellent.
Cite
@article{arxiv.hep-ph/0410052,
title = {Octet contributions in radiative upsilon decays},
author = {Xavier Garcia i Tormo},
journal= {arXiv preprint arXiv:hep-ph/0410052},
year = {2007}
}
Comments
4 pages, 2 figures, talk given at Quark Confinement and the Hadron Spectrum VI, to appear in the proceedings