Gluon Reggeization in QCD in the next-to-leading order

Fadin, Victor S.; Kotsky, M.I.; Fiore, R.

doi:10.1016/0370-2693(95)01016-J

Gluon Reggeization in QCD in the next-to-leading order

Victor S. Fadin
(
- Novosibirsk, IYF and
- Novosibirsk State U.
)
,
M.I. Kotsky
(
- Novosibirsk, IYF and
- Novosibirsk State U.
)
,
R. Fiore
(
- Calabria U. and
- INFN, Cosenza
)

1995

8 pages

Published in:

Phys.Lett.B 359 (1995) 181-188

DOI:

10.1016/0370-2693(95)01016-J

View in:

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Abstract: (Elsevier)

Gluon Reggeization can significantly simplify the calculation of subleading terms for parton distributions at small x , where x is the longitudinal momentum fraction carried by a parton. We check the Reggeization in elastic scattering processes of QCD at large energy and fixed momentum transfer . For amplitudes of these processes with gluon quantum numbers and negative signature in the t channel s -channel discontinuities are calculated in the two-loop approximation. The two-loop correction to the gluon trajectory is expressed in terms of these discontinuities. Remarkable cancellations lead to the independence of the trajectory on the properties of the scattered particles, confirming the gluon Reggeization.

Regge poles
gluon
quantum chromodynamics
correction: higher-order
elastic scattering
scattering amplitude: analytic properties
analytic properties: scattering amplitude

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