ar X iv : h ep - p h / 96 04 35 0 v 1 1 8 A pr 1 99 6 On the triple pomeron contribution in the hard pomeron theory

ar X iv : h ep - p h / 95 06 24 5 v 1 6 J un 1 99 5 The triple pomeron interaction in the perturbative QCD

The triple pomeron interaction is studied in the perturbative approach of BFKL-Bartels. At finite momentum transfers √ −t the contribution factorizes in the standard manner with a triple-pomeron vertex proportional to 1/ √ −t. At t = 0 the contribution is finite, although it grows faster with energy than for finite t and does not factorize.

ar X iv : h ep - p h / 03 04 07 9 v 1 8 A pr 2 00 3 ON A TWO POMERON DESCRIPTION OF THE F 2 STRUCTURE FUNCTION

We perform a global fit to the inclusive structure function considering a QCD inspired model based on the summation of gluon ladders describing the ep scattering. In lines of a two Pomeron approach, the structure function F 2 has a hard piece given by the model and the remaining soft contributions: the soft Pomeron and non-singlet content. We have investigated several choices for the soft Pomer...

ar X iv : h ep - p h / 96 11 30 6 v 1 1 2 N ov 1 99 6 INTRODUCTION TO THE POMERON 1

ar X iv : h ep - p h / 99 04 28 0 v 1 8 A pr 1 99 9 SLAC - PUB - 8095 April 1999 Odderon - Pomeron Interference ∗

We show that the asymmetry in the fractional energy of charm versus an-ticharm jets produced in high energy diffractive photoproduction is sensitive to the interference of the Odderon (C = −) and Pomeron (C = +) exchange amplitudes in QCD. We predict the dynamical shape of the asymmetry in a simple model and estimate its magnitude to be of the order 15% using constraints from proton-proton vs. ...

ar X iv : h ep - p h / 96 12 23 5 v 1 3 D ec 1 99 6 Model ( In ) dependent Features of the Hard Pomeron

We discuss the small-x behaviour of the next-to-leading BFKL equation, depending on various smoothing out procedures of the running coupling constant at low momenta. While scaling violations (with resummed and calculable anomalous dimensions) turn out to be always consistent with the renormalization group, we argue that the nature and the location of the so-called hard Pomeron are dependent on ...