Some tests for the helicity structure of the Pomeron in ep collisions View Full Text


Ontology type: schema:ScholarlyArticle      Open Access: True


Article Info

DATE

1997-12

AUTHORS

T. Arens, O. Nachtmann, M. Diehl, P.V. Landshoff

ABSTRACT

We discuss the reaction ep→epp˜X in the onephoton exchange approximation, where it is in essence the reaction γ*p→p˜X. A large rapidity gap is required between the particle or particles of the proton remnant pJ and those of X. We define a suitable azimuthal angle between a leptonic and a hadronic plane. The dependence of the cross section on is given explicitly and can be used to extract cross sections and interference terms for the reactionγ*p→p˜X corresponding to the various helicities of the virtual photon γ*. The interference terms can be used to test models for the large rapidity gap events in a sensitive way. We discuss in detail models with factorizing Pomeron exchange and in particular the Donnachie- Landshoff Pomeron model. We make some remarks on soft colour exchange models and on possible effects of QCD background vacuum fields. We conclude with a suggestion to look for Odderon exchange in exclusive deep inelastic high energy reactions like γ*p→,p˜π0and ğp→p˜η. More... »

PAGES

651-669

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s002880050430

DOI

http://dx.doi.org/10.1007/s002880050430

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1009027086


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