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| Author | : Koji Terashi |
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| Total Pages | : 4 |
| Release | : 2006 |
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We present new results from studies on diffractive dijet production and exclusive production of dijet and diphoton obtained by the CDF Collaboration in proton-antiproton collisions at the Fermilab Tevatron.
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| Release | : 2000 |
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| Release | : 2000 |
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Hard diffraction in events with dijets and rapidity gaps has been studied by D0 and CDF for three processes: hard color singlet exchange, hard single diffraction, and hard double pomeron exchange, using Tevatron [anti p]p data at [radical]s = 630 GeV and 1.8 TeV. Measurements of rates, [eta], E[sub T] and [radical]s dependencies are presented and comparisons made with predictions of several models.
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| Release | : 2000 |
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Experimental results of hard single diffraction and double pomeron exchange studies at the Fermilab Tevatron p{bar p} collider are presented. Single diffraction results are compared with predictions from phenomenological models and expectations from results obtained in diffractive deep inelastic scattering experiments at the DESY ep collider HERA. Double pomeron exchange results are compared with corresponding single diffraction results to test factorization.
| Author | : Michele Gallinaro |
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| Total Pages | : 4 |
| Release | : 2005 |
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Experimental results in diffractive processes are summarized and a few notable characteristics described in terms of Quantum Chromodynamics. Exclusive dijet production is used to establish a benchmark for future experiments in the quest for diffractive Higgs production at the Large Hadron Collider. Using new data from the Tevatron and dedicated diffractive triggers, no excess over a smooth falling distribution for exclusive dijet events could be found. Stringent upper limits on the exclusive dijet production cross section are presented. The quark/gluon composition of dijet final states is used to provide additional hints on exclusive dijet production.
| Author | : Konstantin Goulianos |
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| Total Pages | : 10 |
| Release | : 2006 |
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The diffractive program of the CDF Collaboration at the Fermilab Tevatron p{bar p} Collider is reviewed with emphasis on recent results from Run II at {radical}s = 1.96 TeV. Updated results on the x{sub B{sub j}} and Q{sup 2} dependence of the diffractive structure function obtained from dijet production, and on the slope parameter of the t-distribution of diffractive events as a function of Q{sup 2} in the range 1 GeV{sup 2}
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| Release | : 1649 |
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| Author | : Krisztian Peters |
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| Total Pages | : 6 |
| Release | : 2006 |
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We review hard diffractive results and prospects at the Tevatron with an emphasis on factorization breaking in diffractive processes. Upper limits on the exclusive di-jet and {chi}{sub c}{sup 0} production cross sections at CDF and the status of the D0 Forward Proton Detectors are discussed.
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| Release | : 2000 |
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The authors report a measurement of the diffractive structure function of the antiproton for dijet events produced in association with a leading antiproton in {anti p}p collisions at (square root)(s) = 1800 GeV. Comparing their results with expectations based on parton densities extracted by the H1 Collaboration from diffractive deep inelastic scattering at the DESY ep collider HERA, the authors find a severe breakdown of QCD factorization.
| Author | : K. Goulianos |
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| Total Pages | : 6 |
| Release | : 2005 |
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Results on diffractive particle interactions from the Fermilab Tevatron {bar p}p collider are placed in perspective through a QCD inspired phenomenological approach, which exploits scaling and factorization properties observed in data. The results discussed are those obtained by the CDF Collaboration from a comprehensive set of single, double, and multigap soft and hard diffraction processes studied during the twenty year period since 1985, when the CDF diffractive program was proposed and the first Blois Workshop was held.
