Measurement of the B_c Meson Lifetime Using B_c ->J/Psi e nu
High Energy Physics - Experiment
2010-05-12 v2
Abstract
We present a measurement of the B_c+ meson lifetime in the semileptonic decay mode Bc+ ->J/Psi e+ nu using the CDF II detector at the Fermilab Tevatron Collider. From a sample of about 360pb-1 p-pbar collisions at sqrt(s)=1.96TeV, we reconstruct J/Psi e+ pairs with invariant mass in the kinematically allowed range 4<M(J/Psi e)<6GeV/c^2. A fit to the decay-length distribution of 238 signal events yields a measured Bc mesion lifetime 0.463 (+0.073,-0.065)+-0.036 ps.
Cite
@article{arxiv.hep-ex/0603027,
title = {Measurement of the B_c Meson Lifetime Using B_c ->J/Psi e nu},
author = {CDF Collaboration and A. Abulencia},
journal= {arXiv preprint arXiv:hep-ex/0603027},
year = {2010}
}
Comments
15 pages, submitted to PRL on March 9, 2006