A new determination of the Pomeron intercept in hard processes

Abstract

A method allowing for a direct comparison of data with theoretical predictions is proposed for forward jet production at HERA. It avoids the reconstruction of multi-parton contributions by expressing the experimental data directly as correction factors on the QCD forward jet cross-section. An application to the determination of the effective Pomeron intercept in the BFKL-LO parametrization from dsigma/dx data at HERA leads to a good fit with a significantly higher effective intercept, alpha_P = 1.43 \pm 0.025(stat.) \pm >.025(syst.), than for proton (total and diffractive) structure functions. It is however less than the value of the Pomeron intercept using dijets with large rapidity intervals obtained at Tevatron. We also evaluate the rapidity veto contribution to the higher order BFKL corrections. The method can be extended to other theoretical inputs.

8pages,1 eps figure, one reference added

References in corpus (4)

• Forward Jet Production in Deep Inelastic Scattering at HERA
• Rapidity veto effects in the NLO BFKL equation
• Charm production at HERA
• Small x QCD effects in DIS with a forward jet or a forward pi0

Cited by in corpus (6)

• Azimuthal decorrelation of Mueller-Navelet jets at the Tevatron and the LHC
• Saturation at Hadron Colliders
• Small-x QCD effects in forward-jet and Mueller-Navelet jet production
• Next-leading BFKL effects in forward-jet production at HERA
• Next-to-leading BFKL phenomenology of forward-jet cross sections at HERA
• Saturation and forward jets at HERA