Two Photon Reactions at High Energies

Abstract

Cross sections for the reactions gamma^(*) gamma^(*) --> hadrons and gamma^(*) gamma^(*) --> 2 vector mesons are calculated as functions of energy (sqrt(s) > 20 GeV) and photon virtualities. Good agreement with experiment is obtained for the total hadronic cross section and, after allowing for a valence-quark contribution from the hadronic part of the photon, with the photon structure function at small x. The cross section for vector meson production are shown to be experimentally accessible for moderate values of Q^2. This is sufficient to probe the nature of the hard pomeron which has recently been proposed.

some changes in style, physics unchanged, final version to appear in Phys.Rev.D, LaTeX2e, graphicx package, 15 eps-figures, 15pp

References in corpus (7)

• BFKL pomeron in the next-to-leading approximation
• Small x: Two Pomerons!
• Nonperturbative γ^* p Interaction in the Diffractive Regime
• Measurement of the Q^2 evolution of the photon structure function F_2^gamma
• Odd C-P contributions to diffractive processes
• Diffractive color-dipole nucleon scattering
• Parton distributions in the photon from ${\gamma }^{\ast }\gamma$ and ${\gamma }^{\ast }p$ scattering

Cited by in corpus (15)

• Instanton-induced Inelastic Collisions in QCD
• Diffractive Exclusive Photon Production in Deep Inelastic Scattering
• Total Cross Section in gamma gamma Collisions at LEP
• A Comprehensive Approach to Structure Functions
• Quark-Antiquark Exchange in ${\gamma }^{\ast }{\gamma }^{\ast }$ Scattering
• t-channel unitarity and photon cross sections
• Double vector meson production from the BFKL equation
• Dipole model for double meson production in two-photon interactions at high energies
• A phenomenological analysis of the nonperturbative QCD contributions for the photon wave function
• A Unified Model of Exclusive ${\rho }^0$, $\varphi$ and $\jpsi$ Electroproduction
• Double diffractive meson production and the BFKL Pomeron at $e^{+}{e}^{-}$ colliders
• Probing QCD dynamics in two-photon interactions at high energies
• Double vector meson production in the International Linear Collider
• Gamma(*)Gamma(*) reaction at high energies
• Parametrisation of F_2^gamma at low Q^2 and of sigma(gamma,gamma) and sigma(gamma^*,gamma) at high energies