Breakdown of Coherence ?

Abstract

In a recent paper, Albrecht Kyrieleis, Jeff Forshaw and I discovered a new tower of super-leading logarithms in gaps between jets cross sections. After discussions with the referee of our paper and further investigation, we have come to view this as a breakdown of naive coherence for initial state radiation. In this talk I illustrate this statement in a simple way, and show how it results in the super-leading logarithms.

Comments: 10 pages, Talk given at 12th International Conference on Elastic and Diffractive Scattering (EDS '07), May 21st-25th 2007, DESY, Hamburg