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English

Measurement of cross sections for b jet production in events with a Z boson in pp collisions at s√=1.96  TeV

ContributorsCDF Collaboration
Publication date2009
Abstract

A measurement of the b jet production cross section is presented for events containing a Z boson produced in pp¯ collisions at s√=1.96  TeV, using data corresponding to an integrated luminosity of 2  fb−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 |η|<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)×10−3. This ratio is also measured differentially in jet ET, jet η, 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.

Citation (ISO format)
CDF Collaboration. Measurement of cross sections for <em>b</em> jet production in events with a <em>Z</em> boson in <em>pp</em> collisions at s√=1.96  TeV. In: Physical review. D. Particles, fields, gravitation, and cosmology, 2009, vol. 79, n° 05, p. 052008. doi: 10.1103/PhysRevD.79.052008
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Article (Published version)
accessLevelPublic
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ISSN of the journal1550-2368
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