Measurement of the Lambda_b lifetime using semileptonic decays
High Energy Physics - Experiment
2008-11-26 v1
Abstract
We report a measurement of the Lambda_b lifetime using a sample corresponding to 1.3 fb of data collected by the D0 experiment in 2002--2006 during Run II of the Fermilab Tevatron collider. The Lambda_b baryon is reconstructed via the decay Lambda_b -> mu nu Lambda_c X. Using signal candidates, we measure the Lambda_b lifetime to be = 1.290^{+0.119}_{-0.110}(stat) ^{+0.087}_{-0.091} (syst) ps, which is among the most precise measurements in semileptonic Lambda_b decays. This result is in good agreement with the world average value.
Keywords
Cite
@article{arxiv.0706.2358,
title = {Measurement of the Lambda_b lifetime using semileptonic decays},
author = {D0 Collaboration and V. Abazov},
journal= {arXiv preprint arXiv:0706.2358},
year = {2008}
}