Home > Research > Publications & Outputs > Determination of the ratio of b-quark fragmenta...

Research

Associated organisational units

Electronic data

  • PhysRevLett.115.262001

    Rights statement: Published by the American Physical Society under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Date of acceptance not available

    Final published version, 401 KB, PDF document

    Available under license: CC BY: Creative Commons Attribution 4.0 International License

Links

Text available via DOI:

View graph of relations

Determination of the ratio of b-quark fragmentation fractions fs/fd in pp collisions at s√=7  TeV with the ATLAS detector

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Published
  • The ATLAS collaboration
Close
More...
Article number262001
<mark>Journal publication date</mark>30/12/2015
<mark>Journal</mark>Physical review letters
Issue number26
Volume115
Number of pages18
Publication StatusPublished
<mark>Original language</mark>English

Abstract

With an integrated luminosity of 2.47  fb−1 recorded by the ATLAS experiment at the LHC, the exclusive decays B0s→J/ψϕ and B0d→J/ψK*0 of B mesons produced in pp collisions at s√=7  TeV are used to determine the ratio of fragmentation fractions fs/fd. From the observed B0s→J/ψϕ and B0d→J/ψK*0 yields, the quantity (fs/fd)[B(B0s→J/ψϕ)/B(B0d→J/ψK*0)] is measured to be 0.199±0.004(stat)±0.008(syst). Using a recent theory prediction for [B(B0s→J/ψϕ)/B(B0d→J/ψK*0)] yields (fs/fd)=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.