Quark-Antiquark Exchange in ${\gamma }^{\ast }{\gamma }^{\ast }$ Scattering

Abstract

We calculate the high energy behavior of quark-antiquark exchange in ${\gamma }^{\ast }{\gamma }^{\ast }$ elastic scattering by summing, to all orders, the leading double logarithmic contributions of the QCD ladder diagrams. Motivation comes from the LEP data for ${\sigma }_{tot}^{{\gamma }^{\ast }{\gamma }^{\ast }}$ which indicate the need for secondary reggeon exchange. We show that, for large photon virtualities, this exchange is calculable in pQCD. This applies, in particular, to parts of the LEP kinematic region.

32 pages, 11 figures, JHEP style

References in corpus (3)

• NLO Corrections to the Photon Impact Factor: Combining Real and Virtual Corrections
• High-Energy QCD Asymptotics of Photon-Photon Collisions
• On the Calculation of the NLO Virtual Photon Impact Factor

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