Semi-inclusive radiative decays of Upsilon 1S
High Energy Physics - Phenomenology
2013-05-29 v2 High Energy Physics - Experiment
Abstract
We discuss in detail the photon spectrum of radiative Upsilon 1S decays taking into account a number of results that have recently appeared in the literature. In particular, we show how to consistently combine expressions which are valid in the upper end-point region, where NRQCD factorization breaks down, with those of the central region, where NRQCD factorization holds. An excellent description of data is achieved, but theoretical errors are large.
Cite
@article{arxiv.hep-ph/0507107,
title = {Semi-inclusive radiative decays of Upsilon 1S},
author = {Xavier Garcia i Tormo and Joan Soto},
journal= {arXiv preprint arXiv:hep-ph/0507107},
year = {2013}
}
Comments
18 pages, 7 figures. Minor modifications. References added and corrected. Journal version