Charm as a Key to Diffractive Processes

Details Charm as a Key to Diffractive Processes Charm as a Key to Diffractive Processes

1997-03-13

arxiv.org/abs/hep-ph/9703314v2

Phys.Lett.B404:353-361,1997

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, latex, 4 figures. Minor modifications to text in response to referees report. Accepted for publication in Phys. Lett

Scientific paper

10.1016/S0370-2693(97)00560-1

The diffractive production of open charm in deep-inelastic scattering is studied in the semiclassical approach which has been proposed recently. In this approach, the leading order process contains a charm quark pair and an additional gluon in the diffractive final state. The $p_{\perp}$-spectrum and the diffractive mass distribution are evaluated and compared with predictions based on perturbative two-gluon exchange calculations for charm quark pair production. It is shown that the $p_{\perp}$-spectrum provides a clear test of the underlying partonic process whereas the diffractive mass distribution reflects the non-perturbative mechanism of colour neutralization.

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