dc.contributor.author | Baringer, Philip S. | |
dc.contributor.author | Bean, Alice | |
dc.contributor.author | Christofek, L. | |
dc.contributor.author | Coppage, Don | |
dc.contributor.author | Gardner, J. | |
dc.contributor.author | Hensel, Carsten | |
dc.contributor.author | Jabeen, S. | |
dc.contributor.author | Wilson, Graham Wallace | |
dc.date.accessioned | 2007-05-14T18:39:25Z | |
dc.date.available | 2007-05-14T18:39:25Z | |
dc.date.issued | 2005-03 | |
dc.identifier.citation | Abazov, VM; Abbott, B, et al. Measurement of the Lambda(0)(b) lifetime in the decay Lambda(0)(b)-> J/psi Lambda(0) with the D0 detector. PHYSICAL REVIEW LETTERS. March 2005. 94(10) | |
dc.identifier.uri | http://hdl.handle.net/1808/1568 | |
dc.description.abstract | We present measurements of the Lambda(b)(0) lifetime in the exclusive decay channel Lambda(b)(0)-> J/psi Lambda(0), with J/psi ->mu(+)mu(-) and Lambda(0)-> p pi(-), the B-0 lifetime in the decay B-0-> J/psi K-S(0) with J/psi ->mu(+)mu(-) and K-S(0)->pi(+)pi(-), and the ratio of these lifetimes. The analysis is based on approximately 250 pb(-1) of data recorded with the D0 detector in p (p) over bar collisions at root s = 1.96 TeV. The Lambda(b)(0) lifetime is determined to be tau(Lambda(b)(0))=1.22(-0.18)(+0.22)(stat)+/- 0.04(syst) ps, the B-0 lifetime tau(B-0)=1.40(-) (+0.11)(0.10)(stat)+/- 0.03(syst) ps, and the ratio tau(Lambda(b)(0))/tau(B-0)=0.87(-) (+0.17)(0.14)(stat)+/- 0.03(syst). In contrast with previous measurements using semileptonic decays, this is the first determination of the Lambda(b)(0) lifetime based on a fully reconstructed decay channel. | |
dc.language.iso | en_US | |
dc.publisher | AMERICAN PHYSICAL SOC | |
dc.title | Measurement of the Lambda(0)(b) lifetime in the decay Lambda(0)(b)-> J/psi Lambda(0) with the D0 detector | |
dc.type | Article | |
dc.identifier.doi | 10.1103/PhysRevLett.94.102001 | |
dc.rights.accessrights | openAccess | |