TY - JOUR

T1 - BFKL Equation and Regge Cuts

AU - Fadin, V. S.

PY - 2019/9/1

Y1 - 2019/9/1

N2 - The BFKL equation is based on the gluon yReggeization. In the leading and next-to-leading logarithmic approximations it is derived using the pole Regge form of QCD amplitudes with gluon quantum numbers in cross-channels and negative signature. This form is violated in the next-to-next-to-leading approximation. In two and three loops the observed violation can be explained by the presence of the three-Reggeon cut. Contributions of this cut to elastic scattering amplitudes up to four loops is discussed.

AB - The BFKL equation is based on the gluon yReggeization. In the leading and next-to-leading logarithmic approximations it is derived using the pole Regge form of QCD amplitudes with gluon quantum numbers in cross-channels and negative signature. This form is violated in the next-to-next-to-leading approximation. In two and three loops the observed violation can be explained by the presence of the three-Reggeon cut. Contributions of this cut to elastic scattering amplitudes up to four loops is discussed.

KW - BFKL equation

KW - gluon Reggeization

KW - Regge cuts

UR - http://www.scopus.com/inward/record.url?scp=85073246911&partnerID=8YFLogxK

U2 - 10.1134/S1547477119050121

DO - 10.1134/S1547477119050121

M3 - Article

AN - SCOPUS:85073246911

VL - 16

SP - 409

EP - 413

JO - Physics of Particles and Nuclei Letters

JF - Physics of Particles and Nuclei Letters

SN - 1547-4771

IS - 5

ER -