Inelastic diffractive scattering in nonperturbative QCD
Abstract
We examine diffractive protonproton scattering p \: p > p \: X and photo and electroproduction of ρ ^{0} mesons γ ^{(*)} \: p > ρ ^{0} \: X, where X denotes a proton or a final state, into which the proton can go by diffractive dissociation. Using a functional integral approach we derive the scattering amplitudes, which are governed by the expectation values of lightlike WegnerWilson loops, which are then evaluated using the model of the stochastic vacuum. For the proton, we assume a quarkdiquark structure. From the scattering amplitudes we calculate total and differential cross sections for high centre of mass energy and small momentum transfer and compare with experiments. Furthermore we calculate isovector form factors for the proton and the pion within the same model.
 Publication:

European Physical Journal C
 Pub Date:
 2001
 DOI:
 10.1007/s100520100740
 arXiv:
 arXiv:hepph/0012367
 Bibcode:
 2001EPJC...21..339D
 Keywords:

 High Energy Physics  Phenomenology
 EPrint:
 32 pages, 11 figures, v3: revised chapter 5, added appendix B, to be published in Eur.Phys.J. C