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

Direct link
Measurement of the production fraction times branching fraction f(b -> Lambda(b)) . B(Lambda(b) -> J/psi Lambda)
Show others and affiliations
2011 (English)In: Physical Review D, ISSN 1550-7998, Vol. 84, no 3, 031102- p.Article in journal (Refereed) Published
Abstract [en]

The Lambda(b)(udb) baryon is observed in the decay Lambda(b) -> J/psi Lambda using 6.1fb(-1) of p (p) over bar collisions collected with the D0 detector at root s = 1/96 TeV. The production fraction multiplied by the branching fraction for this decay relative to that for the decay B(0) -> J/psi K(s)(0) is measured to be 0.345 +/- 0.034(stat) +/- 0.033(syst) +/- 0.003(PDG). Using the world average value of f(b -> B(0)) . B(B(0) -> J/psi K(s)(0) = (1.74 +/- 0.08) x 10(-5), we obtain f(b -> Lambda(b)) . B(Lambda(b) -> J/psi Lambda) = (6.01 +/- 0.60(stat) +/- 0.58(syst) +/- 0.28(PDG)) x 10(-5). This measurement represents an improvement in precision by about a factor of 3 with respect to the current world average.

Place, publisher, year, edition, pages
2011. Vol. 84, no 3, 031102- p.
National Category
Natural Sciences
URN: urn:nbn:se:uu:diva-157242DOI: 10.1103/PhysRevD.84.031102ISI: 000293556300001OAI: oai:DiVA.org:uu-157242DiVA: diva2:437964
Available from: 2011-08-31 Created: 2011-08-22 Last updated: 2011-08-31Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text
By organisation
High Energy Physics
In the same journal
Physical Review D
Natural Sciences

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 193 hits
ReferencesLink to record
Permanent link

Direct link