Change search
ReferencesLink to record
Permanent link

Direct link
Determination of the Ratio of b-Quark Fragmentation Fractions f(s)/f(d) in pp Collisions at root s=7 TeV with the ATLAS Detector
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.ORCID iD: 0000-0002-8913-0981
Show others and affiliations
Number of Authors: 2853
2015 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 115, no 26, 262001Article in journal (Refereed) PublishedText
Abstract [en]

With an integrated luminosity of 2.47 fb(-1) recorded by the ATLAS experiment at the LHC, the exclusive decays B-s(0) -> J/psi phi and B-d(0) -> J/psi K*(0) of B mesons produced in pp collisions at root s = 7 TeV are used to determine the ratio of fragmentation fractions f(s)/f(d). From the observed B-s(0) -> J/psi phi and B-d(0) -> J/psi K*(0) yields, the quantity (f(s)/f(d))[B(B-s(0) -> J/psi phi)/B(B-d(0) -> J/psi K*(0) )] is measured to be 0.199 +/- 0.004(stat) +/- 0.008(syst). Using a recent theory prediction for [B(B-s(0) -> J/psi phi)/B(B-d(0) -> J/psi K*(0))] yields (f(s)/f(d)) = 0.240 +/- 0.004(stat) +/- 0.010(syst) +/- 0.017(th). This result is based on a new approach that provides a significant improvement of the world average.

Place, publisher, year, edition, pages
American Physical Society , 2015. Vol. 115, no 26, 262001
National Category
Subatomic Physics
Identifiers
URN: urn:nbn:se:kth:diva-181091DOI: 10.1103/PhysRevLett.115.262001ISI: 000367385200005ScopusID: 2-s2.0-84953289856OAI: oai:DiVA.org:kth-181091DiVA: diva2:898639
Funder
Swedish Research CouncilKnut and Alice Wallenberg Foundation
Note

QC 20160128

Available from: 2016-01-28 Created: 2016-01-28 Last updated: 2016-02-05Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Lund-Jensen, BengtSidebo, EdvinStrandberg, Jonas
By organisation
Particle and Astroparticle Physics
In the same journal
Physical Review Letters
Subatomic Physics

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: 50 hits
ReferencesLink to record
Permanent link

Direct link