A Measurement of the Ds+ Lifetime
High Energy Physics - Experiment
2008-11-26 v2
Abstract
A high statistics measurement of the Ds+ lifetime from the Fermilab fixed-target FOCUS photoproduction experiment is presented. We describe the analysis of the two decay modes, Ds+ -> phi(1020)pi+ and Ds+ -> \bar{K}*(892)0K+, used for the measurement. The measured lifetime is 507.4 +/- 5.5 (stat.) +/- 5.1 (syst.) fs using 8961 +/- 105 Ds+ -> phi(1020)pi+ and 4680 +/- 90 Ds+ -> \bar{K}*(892)0K+ decays. This is a significant improvement over the present world average.
Cite
@article{arxiv.hep-ex/0504056,
title = {A Measurement of the Ds+ Lifetime},
author = {FOCUS Collaboration and J. M. Link},
journal= {arXiv preprint arXiv:hep-ex/0504056},
year = {2008}
}
Comments
5 pages, 3 figures, 2 tables, submitted to PRL