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

Terence Wyatt; V M Abazov; collaboration D others

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

Terence Wyatt
, V M Abazov
, collaboration D others

Research output: Contribution to journal › Article › peer-review

Abstract

We report a measurement of the Lambda_b lifetime using a sample corresponding to 1.3 fb−1−1 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±3294437±329 signal candidates, we measure the Lambda_b lifetime to be τ(Lambdab)τ(Lambdab) = 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.

Original language	English
Article number	182001
Number of pages	7
Journal	Phys. Rev. Lett.
Volume	99
Publication status	Published - Jun 2007

Cite this

@article{35a7882e5d5642b08aa601d6fb9ed6b3,

title = "Measurement of the \$Lambda\_b\textasciicircum{}0\$ lifetime using semileptonic decays",

abstract = "We report a measurement of the Lambda\_b lifetime using a sample corresponding to 1.3 fb−1−1 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±3294437±329 signal candidates, we measure the Lambda\_b lifetime to be τ(Lambdab)τ(Lambdab) = 1.290\textasciicircum{}\{+0.119\}\_\{-0.110\}(stat) \textasciicircum{}\{+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.",

author = "Terence Wyatt and Abazov, \{V M\} and others, \{collaboration D\}",

year = "2007",

month = jun,

language = "English",

volume = "99",

journal = "Phys. Rev. Lett.",

issn = "1079-7114",

publisher = "American Physical Society",

}

TY - JOUR

T1 - Measurement of the $Lambda_b^0$ lifetime using semileptonic decays

AU - Wyatt, Terence

AU - Abazov, V M

AU - others, collaboration D

PY - 2007/6

Y1 - 2007/6

N2 - We report a measurement of the Lambda_b lifetime using a sample corresponding to 1.3 fb−1−1 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±3294437±329 signal candidates, we measure the Lambda_b lifetime to be τ(Lambdab)τ(Lambdab) = 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.

AB - We report a measurement of the Lambda_b lifetime using a sample corresponding to 1.3 fb−1−1 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±3294437±329 signal candidates, we measure the Lambda_b lifetime to be τ(Lambdab)τ(Lambdab) = 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.

UR - http://inspirehep.net/record/753293

M3 - Article

SN - 1079-7114

VL - 99

JO - Phys. Rev. Lett.

JF - Phys. Rev. Lett.

M1 - 182001

ER -

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

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