The Landshoff-Nachtmann Pomeron on the Lattice

Details The Landshoff-Nachtmann Pomeron on the Lattice The Landshoff-Nachtmann Pomeron on the Lattice

1995-11-30

arxiv.org/abs/hep-lat/9511031v1

Phys.Lett. B369 (1996) 130-136

Physics

High Energy Physics

High Energy Physics - Lattice

uuencoded, compressed tar file, 13 pages latex, 4 Postscript figures, requires epsf.sty

Scientific paper

10.1016/0370-2693(95)01524-8

We investigate the Landshoff-Nachtmann two-gluon-exchange model of the Pomeron using gluon propagators computed in the Landau gauge within quenched lattice QCD calculations. We first determine an effective gluon-quark coupling by constraining the Pomeron-quark coupling to its phenomenological value $\beta_0 = 2\, \gev^{-1}$. We then provide predictions for a variety of diffractive processes. As the propagators have been evaluated entirely from QCD first principles (although in the quenched approximation), our results provide a consistency check of the Landshoff-Nachtmann model. We address the issue of the possible gauge-dependence of our results, which will be the object of a future study.

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