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Measurement of the ratio of inclusive cross sections {sigma}(pp{yields}Z+b-quark jet)/{sigma}(pp{yields}Z+jet) at {radical}(s)=1.96 TeV

Journal Article · · Physical Review. D, Particles Fields
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  1. Joint Institute for Nuclear Research, Dubna (Russian Federation)
  2. University of Oklahoma, Norman, Oklahoma 73019 (United States)
  3. Tata Institute of Fundamental Research, Mumbai (India)
  4. University of Illinois at Chicago, Chicago, Illinois 60607 (United States)
The ratio of the cross section for pp interactions producing a Z boson and at least one b-quark jet to the inclusive Z+jet cross section is measured using 4.2 fb{sup -1} of pp collisions collected with the D0 detector at the Fermilab Tevatron collider at {radical}(s)=1.96 TeV. The Z{yields}l{sup +}l{sup -} candidate events with at least one b jet are discriminated from Z+charm and light jet(s) events by a novel technique that exploits the properties of the tracks associated to the jet. The measured ratio is 0.0193{+-}0.0027 for events having a jet with transverse momentum p{sub T}>20 GeV and pseudorapidity |{eta}|{<=}2.5, which is the most precise to date and is consistent with theoretical predictions.
OSTI ID:
21504839
Journal Information:
Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 3 Vol. 83; ISSN PRVDAQ; ISSN 0556-2821
Country of Publication:
United States
Language:
English