Measurement of the <script type="math/tex">\Lambda_{b}^{0}</script> lifetime in <script type="math/tex">\Lambda_{b}^{0}\rightarrow J/\psi\Lambda^{0}</script> in <script type="math/tex">p\overline{p}</script> collisions at <script type="math/tex">\sqrt{s}</script>=1.96 TeV

Abulencia, A.; Van Remortel, N.; et al.

doi:10.1103/PHYSREVLETT.98.122001

Title

Measurement of the $\Lambda_{b}^{0}$ lifetime in $\Lambda_{b}^{0}\rightarrow J/\psi\Lambda^{0}$ in $p\overline{p}$ collisions at $\sqrt{s}$ =1.96 TeV

Author

Abulencia, A.

Van Remortel, N.

et al.

Institution/Organisation

CDF Collaboration

Abstract

We report a measurement of the Λb0 lifetime in the exclusive decay Λb0→J/ψΛ0 in pp̅ collisions at √s=1.96 TeV using an integrated luminosity of 1.0 fb-1 of data collected by the CDF II detector at the Fermilab Tevatron. Using fully reconstructed decays, we measure τ(Λb0)=1.593-0.078+0.083(stat)±0.033(syst) ps. This is the single most precise measurement of τ(Λb0) and is 3.2σ higher than the current world average.

Language

English

Source (journal)

Physical review letters. - New York, N.Y., 1958, currens

Publication

New York, N.Y. : American Physical Society , 2007

ISSN

0031-9007 [print]

1079-7114 [online]

DOI

10.1103/PHYSREVLETT.98.122001

Volume/pages