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

Direct link
Measurement of the B-s(0) Lifetime in the Flavor-Specific Decay Channel B-s(0)-> D-s(-)mu(+)nu X
Show others and affiliations
2015 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 114, no 6, 062001Article in journal (Refereed) Published
Abstract [en]

We present an updated measurement of the B-s(0) lifetime using the semileptonic decays B-s(0) -> D-s(-)mu(+)nu X, with D-s(-) -> phi pi(-) and phi -> K+K- (and the charge conjugate process). This measurement uses the full Tevatron Run II sample of proton-antiproton collisions at root s = 1.96 TeV, comprising an integrated luminosity of 10.4 fb(-1). We find a flavor-specific lifetime tau(fs)(B-s(0)) = 1.479 +/- 0.010(stat) +/- 0.021(syst) ps. This technique is also used to determine the B-0 lifetime using the analogous B-0 -> D- mu(+)nu X decay with D- -> phi pi(-) and phi -> K+K-, yielding tau(B-0) = 1.534 +/- 0.019(stat) +/- 0.021(syst) ps. Both measurements are consistent with the current world averages, and the B-s(0) lifetime measurement is one of the most precise to date. Taking advantage of the cancellation of systematic uncertainties, we determine the lifetime ratio tau(fs)(B-s(0))/tau(B-0) = 0.964 +/- 0.013(stat) +/- 0.007(syst).

Place, publisher, year, edition, pages
2015. Vol. 114, no 6, 062001
National Category
Physical Sciences
URN: urn:nbn:se:uu:diva-249017DOI: 10.1103/PhysRevLett.114.062001ISI: 000350244900003PubMedID: 25723207OAI: oai:DiVA.org:uu-249017DiVA: diva2:807814
Available from: 2015-04-24 Created: 2015-04-10 Last updated: 2015-04-24Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textPubMed

Search in DiVA

By author/editor
Buszello, Claus P.
By organisation
High Energy Physics
In the same journal
Physical Review Letters
Physical Sciences

Search outside of DiVA

GoogleGoogle Scholar

Altmetric score

Total: 245 hits
ReferencesLink to record
Permanent link

Direct link