A Consistent Next-to-Leading-Order QCD Calculation of Hadronic Diffractive Scattering

Abstract

We calculate the order alpha_s^2 and order alpha_s^3 QCD contributions to colour-singlet exchange in the leading log s approximation. We implement the resulting amplitude at the hadronic level and thus construct the QCD pomeron and odderon to this order of perturbation theory. We show that the structure of the hadronic form factors provides a natural mechanism through which the odderon gets suppressed at t=0 whereas it dominates the elastic cross section at large t. We also demonstrate that the inclusion of nonperturbative effects through a modification of the gluon propagator accelerates greatly the convergence of the log s expansion, although not enough to provide agreement with the data.

26 pages, McGill/93-25

References in corpus (1)

• Total cross sections

Cited by in corpus (30)

• Gluon mass generation in the PT-BFM scheme
• Relating a gluon mass scale to an infrared fixed point in pure gauge QCD
• Freezing of the QCD coupling constant and solutions of Schwinger-Dyson equations
• Photoproduction of Vector Mesons at Large Transfer
• Pinch technique self-energies and vertices to all orders in perturbation theory
• Photoproduction of phi(1020) mesons on the proton at large momentum transfer
• High-Energy Forward Scattering and the Pomeron: Simple Pole versus Unitarized Models
• DRAFT: Photoproduction of the ${\rho }^0$ meson on the proton at large momentum transfer
• Exclusive J/psi and Upsilon hadroproduction and the QCD odderon
• Particle Production in a Hadron Collider Rapidity Gap: The Higgs Case
• Glueball States in a Constituent Gluon Model
• The pinch technique at two-loops: The case of mass-less Yang-Mills theories
• Vector Meson Production at HERA
• Compton scattering, vector meson photoproduction and the partonic structure of the nucleon
• Central exclusive production of dijets at hadronic colliders
• Two Gluon Exchange Model Predictions for Double Pomeron Jet Production
• The Glueball Spectrum from a Potential Model
• The Pomeron in Elastic and Deep Inelastic Scattering
• Critical coupling for dynamical chiral-symmetry breaking with an infrared finite gluon propagator
• The Massive Yang-Mills Model and Diffractive Scattering
• Exclusive Meson Photo- and Electro-production, a Window on the Structure of Hadronic Matter
• Do we need two Pomerons?
• A Unified Model of Exclusive ${\rho }^0$, $\varphi$ and $\jpsi$ Electroproduction
• The BFKL Pomeron: Can it be Detected?
• Infrared finite solutions for the gluon propagator and the QCD vacuum energy
• The Soft Pomeron and Nonperturbative Corrections in Quark-Quark Scattering
• Elastic scattering and the proton form factor
• Double non-perturbative gluon exchange: an update on the soft Pomeron contribution to pp scattering
• The Quark Propagator from the Dyson-Schwinger Equations: I. the Chiral Solution
• Gluon propagator in diffractive scattering