Measurement of B‾ B angular correlations based on secondary vertex reconstruction at √ s = 7 TeV
Name
Khachatryan2011_Article_MeasurementOfTextBOverlineText.pdf
Description
Published version
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610.09 KB
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Adobe PDF
Checksum (MD5)
ece435d2b7ace2492feb2165d2553b96
Author(s)
The CMS Collaboration
Date Issued
2011
Journal
Journal of High Energy Physics
Publisher
Springer Science and Business Media LLC
Citation
Khachatryan, V., et al. "Measurement of B(B)over-Bar Angular Correlations Based on Secondary Vertex Reconstruction at Root S=7 Tev." Journal of High Energy Physics 3 (2011).
Version
Final published version
Abstract
A measurement of the angular correlations between beauty and anti-beauty hadrons (BB̄) produced in pp collisions at a centre-of-mass energy of 7 TeV at the CERN LHC is presented, probing for the first time the region of small angular separation. The B hadrons are identified by the presence of displaced secondary vertices from their decays. The B hadron angular separation is reconstructed from the decay vertices and the primaryinteraction vertex. The differential BB̄ production cross section, measured from a data sample collected by CMS and corresponding to an integrated luminosity of 3.1 pb -1, shows that a sizable fraction of the BB̄ pairs are produced with small opening angles. These studies provide a test of QCD and further insight into the dynamics of bb̄ production.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Terms of Use
Creative Commons Attribution 4.0 International license
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1007/JHEP03(2011)136
