Leptonic decay of the Upsilon(1S) meson at third order in QCD
High Energy Physics - Phenomenology
2014-04-24 v1
Abstract
We present the complete next-to-next-to-next-to-leading order short-distance and bound-state QCD correction to the leptonic decay rate Gamma(Upsilon(1S)->l+l-) of the lowest-lying spin-1 bottomonium state. The perturbative QCD prediction is compared to the measurement Gamma(Upsilon(1S)->e+e-)=1.340(18) keV.
Keywords
Cite
@article{arxiv.1401.3005,
title = {Leptonic decay of the Upsilon(1S) meson at third order in QCD},
author = {Martin Beneke and Yuichiro Kiyo and Peter Marquard and Alexander Penin and Jan Piclum and Dirk Seidel and Matthias Steinhauser},
journal= {arXiv preprint arXiv:1401.3005},
year = {2014}
}
Comments
4 pages, 2 figures