Measurement of cross sections for b jet production in events with a Z boson in p(p)over-bar collisions at root s=1.96 TeV
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Aaltonen-2009-Measurement of cross.pdf
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Author(s)
Aaltonen, T.
Adelman, J.
Akimoto, T.
Alvarez Gonzalez, B.
Amerio, S.
Amidei, D.
Anastassov, A.
Annovi, A.
Antos, J.
Apollinari, G.
Date Issued
March 2009
Journal
Physical Review D
Publisher
American Physical Society
Citation
Aaltonen, T. et al. “Measurement of cross sections for b jet production in events with a Z boson in p[overline p] collisions at sqrt(s) = 1.96 TeV.” Physical Review D (Particles and Fields) 79.5 (2009): 052008-13. ©2009 The American Physical Society
Version
Final published version
Abstract
A measurement of the b jet production cross section is presented for events containing a Z boson produced in p[overline p] collisions at sqrt(s)=1.96 TeV, using data corresponding to an integrated luminosity of 2 fb[superscript -1] collected by the CDF II detector at the Tevatron. Z bosons are selected in the electron and muon decay modes. Jets are considered with transverse energy ET>20 GeV and pseudorapidity |eta|<1.5 and are identified as b jets using a secondary vertex algorithm. The ratio of the integrated Z+b jet cross section to the inclusive Z production cross section is measured to be 3.32±0.53(stat)±0.42(syst)×10[superscript -3]. This ratio is also measured differentially in jet ET, jet eta, Z-boson transverse momentum, number of jets, and number of b jets. The predictions from leading-order Monte Carlo generators and next-to-leading-order QCD calculations are found to be consistent with the measurements within experimental and theoretical uncertainties.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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DOI of Published Version
http://dx.doi.org/10.1103/PhysRevD.79.052008
