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This study presents new measurements of inclusive jet production cross sections in proton-proton collisions at 1.8 TeV. The results align with Quantum Chromodynamics predictions and help refine parton distribution functions.

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Area of Science:

  • High-energy particle physics
  • Quantum Chromodynamics (QCD)

Background:

  • Understanding the behavior of quarks and gluons within protons is crucial.
  • Previous measurements of jet production had limited coverage in pseudorapidity.

Purpose of the Study:

  • To present a new measurement of the inclusive jet production cross section.
  • To extend measurements to higher pseudorapidity (eta) values.
  • To compare results with theoretical predictions from QCD.

Main Methods:

  • Utilized 95 pb(-1) of data from proton-proton collisions at the Fermilab Tevatron.
  • Collected data using the D0 detector at a center-of-mass energy of 1.8 TeV.
  • Measured the differential cross section d(2)sigma/(dE(T)d eta) as a function of transverse energy (E(T)) and pseudorapidity (eta).

Main Results:

  • Presented the inclusive jet production cross section up to eta = 3.
  • Extended previous measurements significantly in pseudorapidity.
  • Observed good overall agreement between experimental data and next-to-leading order QCD predictions.

Conclusions:

  • The extended measurements provide a more comprehensive test of QCD.
  • The results indicate a preference for specific parton distribution functions.
  • This work contributes to a deeper understanding of proton structure at high energies.