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Measurement of the ratio of inclusive cross sections sigma(p(p)over-bar -> Z plus b-quark jet)/sigma(p(p)over-bar -> Z plus jet) at root s=1.96 TeV
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2011 (English)In: Physical Review D - Particles, Fields, Gravitation and Cosmology, ISSN 1550-7998, Vol. 83, no 3, 031105- p.Article in journal (Refereed) Published
Abstract [en]

The ratio of the cross section for p (p) over bar 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 (p) over bar collisions collected with the D0 detector at the Fermilab Tevatron collider at root 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(T) > 20 GeV and pseudorapidity vertical bar eta vertical bar <= 2.5, which is the most precise to date and is consistent with theoretical predictions.

Place, publisher, year, edition, pages
2011. Vol. 83, no 3, 031105- p.
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Physical Sciences
Identifiers
URN: urn:nbn:se:uu:diva-149571DOI: 10.1103/PhysRevD.83.031105ISI: 000287797900001OAI: oai:DiVA.org:uu-149571DiVA: diva2:405180
Available from: 2011-03-21 Created: 2011-03-21 Last updated: 2011-03-21Bibliographically approved

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