A measurement of the b jet production cross section is presented for events containing a Z boson produced in p (p) over bar collisions at root 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 E(T) > 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)) x 10(-3). This ratio is also measured differentially in jet E(T), 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.
Scheda prodotto non validato
Scheda prodotto in fase di analisi da parte dello staff di validazione
|Titolo:||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|
|Citazione:||T., A., J., A., T., A., B. A., G., S., A., D., A., et al. (2009). 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. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 79, 052008-1-052008-13.|
|Appare nelle tipologie:||1.1 Articolo in rivista|
File in questo prodotto: