Measurement of the Λb0 lifetime in Λb0→J/ψΛ0 in p(p)over-bar collisions at √s=1.96 TeV

被引：32

作者：

Abulencia, A. ^{[1
]}

Adelman, J.

Affolder, T.

Akimoto, T.

Albrow, M. G.

Ambrose, D.

Amerio, S.

Amidei, D.

Anastassov, A.

Anikeev, K.

Annovi, A.

Antos, J.

Aoki, M.

Apollinari, G.

Arguin, J. -F.

Arisawa, T.

Artikov, A.

Ashmanskas, W.

Attal, A.

Azfar, F.

Azzi-Bacchetta, P.

Azzurri, P.

Bacchetta, N.

Badgett, W.

Barbaro-Galtieri, A.

Barnes, V. E.

Barnett, B. A.

Baroiant, S.

Bartsch, V.

Bauer, G.

Bedeschi, F.

Behari, S.

Belforte, S.

Bellettini, G.

Bellinger, J.

Belloni, A.

Benjamin, D.

Beretvas, A.

Beringer, J.

Berry, T.

Bhatti, A.

Binkley, M.

Bisello, D.

Blair, R. E.

Blocker, C.

Blumenfeld, B.

Bocci, A.

Bodek, A.

Boisvert, V.

Bolla, G.

机构：

[1] Okayama Univ, Okayama 7008530, Japan

来源：

PHYSICAL REVIEW LETTERS | 2007年 / 98卷 / 12期

基金：

英国科学技术设施理事会;

关键词：

D O I：

10.1103/PhysRevLett.98.122001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report a measurement of the Lambda(0)(b) lifetime in the exclusive decay Lambda(0)(b)-> J/psi Lambda(0) in p (p) over bar collisions at root 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 tau(Lambda(0)(b))=1.593(-0.078)(+0.083)(stat)+/- 0.033(syst) ps. This is the single most precise measurement of tau(Lambda(0)(b)) and is 3.2 sigma higher than the current world average.

引用

页数：7

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