EPJ

2022 Impact factor 4.4
EPJ C - Particles and Fields
Particles and Fields
Eur. Phys. J. C 13, 651-661
DOI 10.1007/s100520000325

The (BFKL) Pomeron-$\gamma^*$-$\gamma$ vertex for any conformal spin

S. Munier - H. Navelet

Service de Physique Théorique, CEA/Saclay, 91191 Gif-sur-Yvette Cedex, France

Received: 6 September 1999 / Revised version: 21 November 1999 /
Published online: 17 March 2000 - © Springer-Verlag 2000

Abstract
To study diffractive photon production at HERA, we compute the projection of the $\gamma^*\gamma$ impact-factor on the BFKL leading-order eigenfunctions $E^{n,\nu}$ for non-zero transfer. This calculation supplements former ones performed for n=0. We provide an expression for $n=\pm 2$ and check that all the other components are zero.

Copyright Società Italiana di Fisica, Springer-Verlag 2000

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