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.

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(3), 032008-1-032008-12 [10.1103/PhysRevD.74.032008].

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

CIOCCI, MARIA AGNESE;
2006-01-01

Abstract

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.
2006
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(3), 032008-1-032008-12 [10.1103/PhysRevD.74.032008].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/37449
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