Photon polarisation in diffractive deep inelastic scattering
CPT, Ecole Polytechnique, F-91128 Palaiseau, France
Received: 17 September 1997 / Published online: 23 February 1998
The distribution of a suitably defined azimuthal angle in diffractive deep inelastic scattering contains information on the polarisation of the exchanged photon. In particular it allows one to constrain the longitudinal diffractive structure function. We investigate the potential of such bounds in general and for particular diffractive final states.