Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2009-08-18
Phys.Rev.D80:074006,2009
Physics
High Energy Physics
High Energy Physics - Phenomenology
26 pages, 11 figures
Scientific paper
10.1103/PhysRevD.80.074006
We perform next-to-leading order calculations of the single-diffractive and non-diffractive cross sections for dijet production in proton-antiproton collisions at the Tevatron. By comparing their ratio to the data published by the CDF collaboration for two different center-of-mass energies, we deduce the rapidity-gap survival probability 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 next-to-leading order.
Klasen Michael
Kramer Georgiana
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