We present a measurement of the cross sections for the associated production of a W boson with at least one heavy quark jet, b or c, in proton–antiproton collisions. Data corresponding to an ...integrated luminosity of 8.7 fb−1 recorded with the D0 detector at the Fermilab Tevatron pp¯ Collider at s=1.96 TeV are used to measure the cross sections differentially as a function of the jet transverse momenta in the range 20 to 150 GeV. These results are compared to calculations of perturbative QCD theory as well as predictions from Monte Carlo generators.
We present the first measurements of the differential cross section dσ/dpTγ for the production of an isolated photon in association with at least two b-quark jets. The measurements consider photons ...with rapidities |yγ|<1.0 and transverse momenta 30<pTγ<200 GeV. The b-quark jets are required to have pTjet>15 GeV and |yjet|<1.5. The ratio of differential production cross sections for γ+2b-jets to γ+b-jet as a function of pTγ is also presented. The results are based on the proton–antiproton collision data at s=1.96 TeV collected with the D0 detector at the Fermilab Tevatron Collider. The measured cross sections and their ratios are compared to the next-to-leading order perturbative QCD calculations as well as predictions based on the kT-factorization approach and those from the sherpa and pythia Monte Carlo event generators.
Beauty production at DØ Zieminska, Daria
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment,
12/1995, Letnik:
368, Številka:
1
Journal Article
Recenzirano
We report on the measurement of the inclusive production cross section of single muon, dimuon and heavy quarkonium states
J
ψ
and ϒ in p
p
collisions at
s
=1.8
TeV
at the Fermilab Tevatron Collider. ...We extract the inclusive b quark production cross section and compare the results with next to leading order QCD predictions. For the first time the measurement of the
J
ψ
production cross section is extended to the forward region. From the information on the
J
ψ
event topology, the muon impact parameter and the rate of
χ
c radiative decays we estimate the role of various charmonium production mechanisms.
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