@Article{LHCbCollaborationAaij_etal2014,
author="LHCb Collaboration (Aaij, R. et al
and Martinez-Vidal, F.
and Oyanguren, A.
and Ruiz Valls, P.
and Sanchez Mayordomo, C.",
title="Precision Measurement of the Mass and Lifetime of the Xi(-)(b) Baryon",
journal="Physical Review Letters",
year="2014",
publisher="Amer Physical Soc",
volume="113",
number="24",
pages="242002--9pp",
abstract="We report on measurements of the mass and lifetime of the Xi(-)(b) baryon using about 1800 Xi(-)(b) decays reconstructed in a proton-proton collision data set corresponding to an integrated luminosity of 3.0 fb(-1) collected by the LHCb experiment. The decays are reconstructed in the Xi(-)(b) -> Xi(0)(c)pi(-), Xi(0)(c) -> pK(-)K(-)pi(+) channel and the mass and lifetime are measured using the Lambda(0)(b) -> Lambda(+)(c)pi(-) mode as a reference. We measure M(Xi(-)(b)) -- M(Lambda(0)(b)) = 178.36 +/- 0.46 +/- 0.16 MeV/c(2), (tau Xi(-)(b)/tau Lambda(0)(b)) = 1.089 +/- 0.026 +/- 0.011, where the uncertainties are statistical and systematic, respectively. These results lead to a factor of 2 better precision on the Xi(-)(b) mass and lifetime compared to previous best measurements, and are consistent with theoretical expectations.",
optnote="WOS:000346387700009",
optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=2050), last updated on Thu, 15 Jan 2015 12:44:32 +0000",
issn="0031-9007",
doi="10.1103/PhysRevLett.113.242002",
opturl="http://arxiv.org/abs/1409.8568",
opturl="https://doi.org/10.1103/PhysRevLett.113.242002",
archivePrefix="arXiv",
eprint="1409.8568",
language="English"
}