Title
Measurement of the Λb0 lifetime in Λb0→Λc+π <sup>-</sup> decays in pp̄ collisions at √s=1.96TeV
Date Issued
11 March 2010
Access level
open access
Resource Type
journal article
Author(s)
Aaltonen T.
Adelman J.
Álvarez González B.
Amerio S.
Amidei D.
Anastassov A.
Annovi A.
Antos J.
Apollinari G.
Apresyan A.
Arisawa T.
Artikov A.
Asaadi J.
Ashmanskas W.
Attal A.
Aurisano A.
Azfar F.
Badgett W.
Barbaro-Galtieri A.
Barnes V.E.
Barnett B.A.
Barria P.
Bartos P.
Bauer G.
Beauchemin P.H.
Bedeschi F.
Beecher D.
Behari S.
Bellettini G.
Bellinger J.
Benjamin D.
Beretvas A.
Bhatti A.
Binkley M.
Bisello D.
Bizjak I.
Blair R.E.
Blocker C.
Blumenfeld B.
Bocci A.
Bodek A.
Boisvert V.
Bortoletto D.
Boudreau J.
Boveia A.
Brau B.
Bridgeman A.
Brigliadori L.
Bromberg C.
Brubaker E.
Budagov J.
Budd H.S.
Budd S.
Burkett K.
Busetto G.
Bussey P.
Buzatu A.
Byrum K.L.
Cabrera S.
Calancha C.
Camarda S.
Campanelli M.
Campbell M.
Canelli F.
Canepa A.
Carls B.
Carlsmith D.
Carosi R.
Carrillo S.
Carron S.
Casal B.
Casarsa M.
Castro A.
Catastini P.
Cauz D.
Cavaliere V.
Cavalli-Sforza M.
Cerri A.
Cerrito L.
Chang S.H.
Chen Y.C.
Chertok M.
Chiarelli G.
Chlachidze G.
Chlebana F.
Cho K.
Chokheli D.
Chou J.P.
Chung K.
Chung W.H.
Chung Y.S.
Chwalek T.
Ciobanu C.I.
Ciocci M.A.
Clark A.
Clark D.
Compostella G.
Convery M.E.
Conway J.
Corbo M.
Publisher(s)
American Physical Society
Abstract
We report a measurement of the lifetime of the Λb0 baryon in decays to the Λc+π- final state in a sample corresponding to 1.1fb-1 collected in pp̄ collisions at √s=1.96TeV by the CDF II detector at the Tevatron collider. Using a sample of about 3000 fully reconstructed Λb0 events we measure τ(Λb0)=1.401±0. 046(stat)±0.035(syst)ps (corresponding to cτ(Λb0)=420. 1±13.7(stat)±10.6(syst)μm, where c is the speed of light). The ratio of this result and the world average B0 lifetime yields τ(Λb0)/τ(B0)=0.918±0.038 (stat) and (syst), in good agreement with recent theoretical predictions. © 2010 The American Physical Society.
Volume
104
Issue
10
Language
English
OCDE Knowledge area
Física de partículas, Campos de la Física
Subjects
Publication version
Version of Record
Scopus EID
2-s2.0-77949343905
Source
Physical Review Letters
ISSN of the container
10797114
Sponsor(s)
Science and Technology Facilities Council (PP/E000444/1, ST/H001026/1, ST/H001026/2, ST/H001069/1, ST/H001077/1)
Sources of information:
Directorio de Producción Científica
Scopus