https://doi.org/10.1051/epjconf/201922203006
Three-Reggeon cuts in QCD amplitudes
1
Budker Institute of Nuclear Physics of SD RAS,
630090
Novosibirsk
Russia
2
Novosibirsk State University,
630090
Novosibirsk
Russia
* e-mail: fadin@inp.nsk.su
Published online: 19 November 2019
One of remarkable properties of QCD is the gluon Reggeization. The Reggeized gluon is the primary Reggeon in QCD; Pomeron and Odderon appear as compound states of the Reggeized gluons. Due to negative signature the Reggeized gluon gives the main contributions to high energy QCD amplitudes in each order ofperturbation theory. In the leading and next-to-leading logarithmic approximations these amplitudes aregiven by the Regge pole contributions. In the next-to-next-to-leading approximation the pole form of the amplitudes is violated by contributions of three-Reggeon cuts. We discuss these contributions to elastic QCD amplitudes.
© The Authors, published by EDP Sciences, 2019
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