Factorization breaking in single-diffractive dijet production at the Tevatron
M. Klasen (LPSC Grenoble)
TL;DR
This paper analyzes single-diffractive dijet production at the Tevatron using NLO QCD, revealing a suppression factor that varies with parton momentum fraction, contrasting with previous photoproduction results.
Contribution
It provides the first NLO QCD analysis of diffractive dijet production at the Tevatron, highlighting the dependence of suppression factors on parton momentum fractions.
Findings
Suppression factor varies with parton momentum fraction in proton-antiproton collisions.
Comparison of single- and non-diffractive cross sections yields the rapidity-gap survival probability.
Contrasts with photoproduction, showing different suppression behavior at NLO.
Abstract
We perform a NLO QCD analysis of single-diffractive dijet production in proton-antiproton collisions. By comparing the ratio of single- and non-diffractive cross sections to data from the Tevatron, the rapidity-gap survival probability is determined as a function of the momentum fraction of the parton in the antiproton. Assuming Regge factorization, this probability can be interpreted as a suppression factor for the diffractive structure function measured in deep-inelastic scattering at HERA. In contrast to the observations for photoproduction, the suppression factor in proton-antiproton collisions depends on the momentum fraction of the parton in the Pomeron even at NLO.
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