Measurement Of The Ratio Of Inclusive Cross Sections Sigmapp Z B Jet Sigmapp Z Jet At Square Roots PDF Download

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A Measurement of the Ratio of Inclusive Cross Sections $\sigma(p\bar{p}\rightarrow Z+b{\rm\, Jet})/ \sigma(p\bar{p}\rightarrow Z+{\rm Jet})$ at $\sqrt{s}

A Measurement of the Ratio of Inclusive Cross Sections $\sigma(p\bar{p}\rightarrow Z+b{\rm\, Jet})/ \sigma(p\bar{p}\rightarrow Z+{\rm Jet})$ at $\sqrt{s}
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Release: 2010
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The ratio of the cross section for p{bar p} interactions producing a Z boson and at least one b quark jet to the inclusive Z+jet cross section is measured using 4.2 fb−1 of p{bar p} collisions collected with the D0 detector at the Fermilab Tevatron collider at √s = 1.96 TeV. The Z → l+l− candidate events with at least one b jet are discriminated from Z+ charm and light jet(s) events by a novel technique that exploits the properties of the tracks associated to the jet. The measured ratio is 0.0193 ± 0.0027 for events having a jet with transverse momentum p{sub T} > 20 GeV and pseudorapidity.

A Measurement of the Ratio of Production Cross Sections for W+1 Jet to W+0 Jets at [square Root of S]

A Measurement of the Ratio of Production Cross Sections for W+1 Jet to W+0 Jets at [square Root of S]
Author: Tacy Marie Joffe-Minor
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Release: 1997
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The QCD corrections to W production associated with a jet are studied using the ratio of W + 1 Jet to W + 0 Jets cross sections for a jet with a transverse energy of 25 GeV. The measured ratio of $0.096\pm0.005\sp{stat}\pm0.008\sp{syst}$ is significantly higher than the theoretical predictions of Giele et al. of 0.053. This discrepancy is at least partly due to the relatively unconstrained gluon distribution of the proton.