Determination of the Ratio of -Quark Fragmentation Fractions in Collisions at with the ATLAS Detector
Journal Article
·
· Physical Review Letters
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). As a result, it is based on a new approach that provides a significant improvement of the world average.
- Research Organization:
- SLAC National Accelerator Lab., Menlo Park, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- Contributing Organization:
- ATLAS Collaboration
- Grant/Contract Number:
- AC03-76SF00515; AC02-05CH11231
- OSTI ID:
- 1234115
- Alternate ID(s):
- OSTI ID: 1233446; OSTI ID: 1378711
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Vol. 115 Journal Issue: 26; ISSN 0031-9007
- Publisher:
- American Physical SocietyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 20 works
Citation information provided by
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