Measurement of dijet production in diffractive deep-inelastic scattering with a leading proton at HERA

  • Aaron F
  • Alexa C
  • Andreev V
 et al. 
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The cross section for the diffractive deep-inelastic scattering process ep -> eXp is measured, with the leading final state proton detected in the H1 Forward Proton Spectrometer. The data sample covers the range x(P) < 0.1 in fractional proton longitudinal momentum loss, 0.1 < vertical bar t vertical bar < 0.7 GeV(2) in squared four-momentum transfer at the proton vertex and 4 < Q(2) < 700 GeV(2) in photon virtuality. The cross section is measured four-fold differentially in t, x(P), Q2 and beta = x/x(P), where x is the Bjorken scaling variable. The t and x(P) dependences are interpreted in terms of an effective pomeron trajectory and a sub-leading exchange. The data are compared with perturbative QCD predictions at next-to-leading order based on diffractive parton distribution functions previously extracted from complementary measurements of inclusive diffractive deep-inelastic scattering. The ratio of the diffractive to the inclusive ep cross section is studied as a function of Q(2), beta and x(P).

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  • F. D. Aaron

  • C. Alexa

  • V. Andreev

  • S. Backovic

  • A. Baghdasaryan

  • S. Baghdasaryan

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