Measurement of the $\Lambda_b^0$ lifetime using semileptonic decays - INSPIRE

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Measurement of the $\Lambda_b^0$ lifetime using semileptonic decays

D0

Collaboration

Jun, 2007

7 pages

Published in:

Phys.Rev.Lett. 99 (2007) 182001

e-Print:

0706.2358 [hep-ex]

DOI:

10.1103/PhysRevLett.99.182001

PDG:

{{\mathit \Lambda}_{{{b}}}^{0}}

Report number:

FERMILAB-PUB-07-205-E

Experiments:

FNAL-E-0823

View in:

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Abstract: (arXiv)

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.

Note:

submitted to Phys. Rev. Lett

14.20.Mr
13.30.Ce
anti-p p: colliding beams
anti-p p: inclusive reaction
Lambda/b0: hadroproduction
Lambda/b0: semileptonic decay
Lambda/b0: lifetime
Lambda/c+: hadronic decay
DZERO
experimental results

References(16)

Figures(0)

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