Hard collisions of photons: plea for a common language
arXiv:hep-ph/0102100
Abstract
An attempt is made to sort out ambiguities existing in the current usage of several basic concepts describing hard collisions of photons. It is argued that appropriate terminology is often a prerequisite for correct physics.
9 pages, EPJC macro, 10 figures in eps format slighly shortened version, two figures removed, references updated