The BFKL-Pomeron In Deep Inelastic Diffractive Dissociation near t=0

Details The BFKL-Pomeron In Deep Inelastic Diffractive Dissociation near t=0 The BFKL-Pomeron In Deep Inelastic Diffractive Dissociation near t=0

1995-01-17

arxiv.org/abs/hep-ph/9501314v1

Z.Phys.C68:121-136,1995

Physics

High Energy Physics

High Energy Physics - Phenomenology

43 pages, LaTex , 11 ps-figures (uuencoded) appended

Scientific paper

10.1007/BF01579811

The small-$t$ behaviour of the deep inelastic diffractive dissociation cross section in the triple Regge region is investigated, using the BFKL approximation in perturbative QCD. We show that the cross section is finite at $t=0$, but the diffusion in $\ln{k_t^2}$ leads to a large contribution of small momenta at the triple Pomeron vertex. We study the dependence upon the total energy and the invariant mass. At $t=0$, there is a decoupling of the three BFKL singularities which is a consequence of the conservation of the conformal dimension. For large invariant masses, the four gluon state in the upper t-channel plays an important role and cannot be neglected.

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