Gauge Invariance and Factorisation in Exclusive Meson Production

Details Gauge Invariance and Factorisation in Exclusive Meson Production Gauge Invariance and Factorisation in Exclusive Meson Production

1997-10-09

arxiv.org/abs/hep-ph/9710296v1

Phys.Lett.B419:393-399,1998

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages LaTeX, 4 figures included, uses epsf

Scientific paper

10.1016/S0370-2693(97)01413-5

The structure of the nonperturbative vector meson vertex function complicates
the proof of the factorisation theorem for the reaction $\gamma^*p\to Vp$. It
leads to additional contributions but, in a simple model for the vertex
function, gauge invariance ensures that they cancel and factorisation is
preserved.

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