uu.seUppsala University Publications
Change search
ReferencesLink to record
Permanent link

Direct link
Measurement of the Lambda(b) lifetime in the exclusive decay Lambda(b)-> J/psi Lambda
Show others and affiliations
2007 (English)In: Physical Review Letters, ISSN 0031-9007, Vol. 99, no 14, 142001- p.Article in journal (Refereed) Published
Abstract [en]

We have measured the Lambda(b) lifetime using the exclusive decay Lambda(b)-> J/psi Lambda, based on 1.2 fb(-1) of data collected with the D0 detector during 2002-2006. From 171 reconstructed Lambda(b) decays, where the J/psi and Lambda are identified via the decays J/psi ->mu(+)mu(-) and Lambda -> p pi, we measured the Lambda(b) lifetime to be tau(Lambda(b))=1.218(-0.115)(+0.130)(stat)+/- 0.042(syst) ps. We also measured the B-0 lifetime in the decay B-0 -> J/psi(mu(+)mu(-))K-S(0)(pi(+)pi(-)) to be tau(B-0)=1.501(-0.074)(+0.078)(stat)+/- 0.050(syst) ps, yielding a lifetime ratio of tau(Lambda(b))/tau(B-0)=0.811(-0.087)(+0.096)(stat)+/- 0.034(syst).

Place, publisher, year, edition, pages
2007. Vol. 99, no 14, 142001- p.
National Category
Physical Sciences
URN: urn:nbn:se:uu:diva-143142DOI: 10.1103/PhysRevLett.99.142001ISI: 000249974000013OAI: oai:DiVA.org:uu-143142DiVA: diva2:389406
Available from: 2011-01-19 Created: 2011-01-19 Last updated: 2012-12-14Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text
By organisation
High Energy PhysicsDepartment of Nuclear and Particle PhysicsUppsala University
In the same journal
Physical Review Letters
Physical Sciences

Search outside of DiVA

GoogleGoogle Scholar

Altmetric score

Total: 183 hits
ReferencesLink to record
Permanent link

Direct link