Download or read book Measurement of the Ratio of Inclusive Cross Sections ? (p Anti-p {u2192} Z + B-jet) written by and published by . This book was released on 2005 with total page 259 pages. Available in PDF, EPUB and Kindle. Book excerpt: Using the data collected with the D0 detector at √s = 1.96 TeV with integrated luminosities of about 180 pb-1, we have measured the ratio of inclusive cross sections for p$ar{p}$ → Z + b-jet to p$ar{p}$ → Z + jet production. The inclusive Z + b-jet reaction is an important background to searches for the Higgs boson in associated ZH production at the Fermilab Tevatron collider and is sensitive to the b quark content of the proton. This thesis describes our measurement which is performed using the dimuon decay channel of the Z boson, id est Z → ?+?-. The ratio in the dimuon channel is measured to be 1.86 ± 0.44(stat)$+0.24top{-0.28}$(syst)% for hadronic jets with transverse momenta pT > 20 GeV/c and pseudorapidities.