Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/4973
Title: Measurement of BB¯ angular correlations based on secondary vertex reconstruction at ?s = 7 TeV
Authors: CMS Collaboration
Demir, Durmuş Ali
Keywords: Hadron-Hadron scattering
CERN
Large Hadron Collider (LHC)
Quantum Chromodynamics (QCD)
Issue Date: 2011
Publisher: Springer Verlag
Source: Khachatryan, V., Sirunyan, A.M., Tumasyan, A., Adam, W., Bergauer, T., Dragicevic, M., Erö, J., ...CMS Collaboration (2011). Measurement of BB̄ angular correlations based on secondary vertex reconstruction at √s = 7 TeV. Journal of High Energy Physics, 2011(3). doi:10.1007/JHEP03(2011)136
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.
URI: http://doi.org/10.1007/JHEP03(2011)136
http://hdl.handle.net/11147/4973
ISSN: 1029-8479
Appears in Collections:Physics / Fizik
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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