Measurement of the b jet cross section in events with a Z boson in pp collisions at {radical}(s)=1.96 TeV

Journal Article · Tue Aug 01 04:00:00 EDT 2006 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.74.032008· OSTI ID:20869215

Abulencia, A; Budd, S; Chu, P H; Ciobanu, C I; Errede, D; Errede, S; Gerberich, H; Grundler, U; Junk, T R; Kraus, J; Liss, T M; Marino, C; Pitts, K; Rogers, E; Taffard, A; Veramendi, G; Zhang, X ^[1]; Acosta, D; Cruz, A; Field, R ^[2]

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1. University of Illinois, Urbana, Illinois 61801 (United States)
2. University of Florida, Gainesville, Florida 32611 (United States)

A measurement of the inclusive bottom jet cross section is presented for events containing a Z boson in pp collisions at {radical}(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{sub 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{sup -1}. A cross section times branching ratio of {sigma}(Z+b jets)xB(Z{yields}l{sup +}l{sup -})=0.93{+-}0.36 pb is found, where B(Z{yields}l{sup +}l{sup -}) 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{sup 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.

• OSTI ID: 20869215
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 3 Vol. 74; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
B QUARKS
BRANCHING RATIO
CROSS SECTIONS
ELECTRONS
FERMILAB COLLIDER DETECTOR
GEV RANGE
JET MODEL
MUONS
PARTICLE DECAY
PARTICLE RAPIDITY
PROTON-PROTON INTERACTIONS
QUANTUM CHROMODYNAMICS
TEV RANGE
Z NEUTRAL BOSONS