GAUGE-INVARIANCE AND FACTORIZATION IN EXCLUSIVE MESON PRODUCTION

Authors
HEBECKER A LANDSHOFF PV
Citation
A. Hebecker et Pv. Landshoff, GAUGE-INVARIANCE AND FACTORIZATION IN EXCLUSIVE MESON PRODUCTION, Physics letters. Section B, 419(1-4), 1998, pp. 393-399
Citations number
13
Categorie Soggetti
Physics
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
419
Issue
1-4
Year of publication
1998
Pages
393 - 399
Database
ISI
SICI code
0370-2693(1998)419:1-4<393:GAFIEM>2.0.ZU;2-8
Abstract
The structure of the nonperturbative vector meson vertex function comp licates the proof of the factorisation theorem for the reaction gamma p --> Vp. It leads to additional contributions but, in a simple model for the vertex function, gauge invariance ensures that they cancel an d factorisation is preserved. (C) 1998 Elsevier Science B.V.