Can one probe the structure function of the pomeron?

Details Can one probe the structure function of the pomeron? Can one probe the structure function of the pomeron?

1996-04-19

arxiv.org/abs/hep-ph/9604360v1

Phys.Lett.B384:293-299,1996

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages LaTeX, uses epsf, 5 eps figures appended as a uuencoded gzipped tarred file

Scientific paper

10.1016/0370-2693(96)00585-0

We discuss whether the diffractive structure functions defined by current experiments at HERA are indeed probing the partonic structure function of the pomeron. We observe that the {\it pseudorapidity} cuts commonly employed require that the struck parton in the pomeron be far off mass shell in sizeable regions of parameter space. As a result an interpretation in terms of constituent partons within the pomeron is inadequate. One may nevertheless use a partonic description for the {\it amplitude} for virtual photon-pomeron scattering to compute a diffractive structure function for pseudorapidity gap events. The resulting form may have significant scaling violation.

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