Leptonic decay of the Upsilon(1S) meson at third order in QCD

2014/01/13 by Martin Beneke, Yuichiro Kiyo, Peter Marquard +4 · 1 citation
Physics and Astronomy · #hep-ph

paper · pdf · doi:10.1103/physrevlett.112.151801

published as Phys. Rev. Lett. 112, 151801 (2014) · 4 pages, 2 figures

arxiv created 2014/01/13 · arxiv updated 2014/04/24

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.

Cited by

• Charm-quark mass effects in NRQCD matching coefficients and the leptonic decay of the Υ(1S) meson