Collaboration, D;
Abazov, V;
(2007)
Measurement of the Lambda_b lifetime using semileptonic decays.
Physical Review Letters
, 99
(18)
, Article 182001. 10.1103/PhysRevLett.99.182001.
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Abstract
We report a measurement of the Lambda_b lifetime using a sample corresponding to 1.3 fb$^{-1}$ 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 $4437 \pm 329$ signal candidates, we measure the Lambda_b lifetime to be $\tau(Lambda_b)$ = 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.
| Type: | Article |
|---|---|
| Title: | Measurement of the Lambda_b lifetime using semileptonic decays |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.99.182001 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.99.182001 |
| Language: | English |
| Additional information: | © 2007 The American Physical Society |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1374359 |
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