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Title
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Measurement of angular correlations based on secondary vertex reconstruction at = 7 TeV
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Author
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Institution/Organisation
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CMS Collaboration
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Abstract
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| A measurement of the angular correlations between beauty and anti-beauty hadrons (BB) 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 primary-interaction vertex. The differential BB 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 BB pairs are produced with small opening angles. These studies provide a test of QCD and further insight into the dynamics of bb production. |
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Language
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English
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Source (journal)
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Journal of high energy physics. - Bristol
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Publication
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Bristol
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2011
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ISSN
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1126-6708
1029-8479
[online]
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DOI
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10.1007/JHEP03(2011)136
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Volume/pages
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3
(2011)
, p. 1-35
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Article Reference
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136
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ISI
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000289295300064
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Medium
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E-only publicatie
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Full text (Publisher's DOI)
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Full text (publisher's version - intranet only)
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