A measurement of the inclusive bottom jet cross section is presented for events containing a Z boson in p (p) over bar collisions at root s=1.96 TeV using the Collider Detector at Fermilab. Z bosons are identified in their electron and muon decay modes, and b jets with E(T)> 20 GeV and |eta| < 1.5 are identified by reconstructing a secondary decay vertex. The measurement is based on an integrated luminosity of about 330 pb(-1). A cross section times branching ratio of sigma(Z+b jets)xB(Z ->l+l-) = 0.93 +/- 0.36 pb is found, where B(Z ->l+l-) is the branching ratio of the Z boson or gamma(*) into a single flavor dilepton pair (e or mu) in the mass range between 66 and 116 GeV/c(2). The ratio of b jets to the total number of jets of any flavor in the Z sample, within the same kinematic range as the b jets, is 2.36 +/- 0.92%. Here, the uncertainties are the quadratic sum of statistical and systematic uncertainties. Predictions made with next-to-leading order QCD agree, within experimental and theoretical uncertainties, with these measurements.
Scheda prodotto non validato
Scheda prodotto in fase di analisi da parte dello staff di validazione
|Titolo:||Measurement of the b jet cross section in events with a Z boson in p (p) over bar collisions at root s = 1. 96 TeV|
|Rivista:||PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY|
|Citazione:||A., A., D., A., J., A., T., A., T., A., M. G., A., et al. (2006). Measurement of the b jet cross section 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, 74, 032008-1-032008-12.|
|Appare nelle tipologie:||1.1 Articolo in rivista|
File in questo prodotto: