Reggeization of quark-quark scattering amplitude in QCD

Details Reggeization of quark-quark scattering amplitude in QCD Reggeization of quark-quark scattering amplitude in QCD

1995-06-27

arxiv.org/abs/hep-ph/9506432v1

Phys.Rev. D53 (1996) 2729-2741

Physics

High Energy Physics

High Energy Physics - Phenomenology

31 pages+2figures(appended as a postscript file), Latex

Scientific paper

10.1103/PhysRevD.53.2729

$s$-channel discontinuity of quark-quark scattering amplitude with gluon quantum numbers in the $t$ channel and negative signature is calculated in the Regge kinematical region in the two-loop approximation. Using this discontinuity and assuming that the Regge asymptotic behaviour is given by the Reggeized gluon contribution, we calculate the gluon trajectory in the two-loop approximation. Remarkable cancellations lead to the independence of the trajectory on properties of the scattered quarks, confirming the gluon Reggeization.

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