A Measurement of Psi(2S) Resonance Parameters
High Energy Physics - Phenomenology
2016-09-06 v2 High Energy Physics - Experiment
Abstract
Cross sections for e+e- to hadons, pi+pi- J/Psi, and mu+mu- have been measured in the vicinity of the Psi(2S) resonance using the BESII detector operated at the BEPC. The Psi(2S) total width; partial widths to hadrons, pi+pi- J/Psi, muons; and corresponding branching fractions have been determined to be Gamma(total)= (264+-27) keV; Gamma(hadron)= (258+-26) keV, Gamma(mu)= (2.44+-0.21) keV, and Gamma(pi+pi- J/Psi)= (85+-8.7) keV; and Br(hadron)= (97.79+-0.15)%, Br(pi+pi- J/Psi)= (32+-1.4)%, Br(mu)= (0.93+-0.08)%, respectively.
Keywords
Cite
@article{arxiv.hep-ph/0209354,
title = {A Measurement of Psi(2S) Resonance Parameters},
author = {BES Collaboration and J. Z. Bai},
journal= {arXiv preprint arXiv:hep-ph/0209354},
year = {2016}
}
Comments
8 pages, 6 figures