Azimuthal Correlations in Photon-Photon Collisions

Abstract

Using the general helicity formula for ${\gamma }^{\ast }{\gamma }^{\ast }$ collisions, we are showing that it should be possible to determine a number of independent ``structure functions'', i.e. linear combinations of elements of the two-photon helicity tensor, through azimuthal correlations in two-body or quasi two-body reactions induced by the photon-photon interaction, provided certain experimental conditions are satisfied. Numerical results of our computations are presented for some particular processes and dynamic models.

Comments: 23 pages; Revtex file; Postscript files of the 6 figures appended in a uuencoded file