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Reggeization of quark-quark scattering amplitude in QCD
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abstract
$s$-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.
Forward citations
Cited by 2 Pith papers
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Regge factorization of tree-level QCD amplitudes using a minimal set of lightcone variables
All tree-level QCD multi-Regge emission vertices with up to four final-state partons are extracted in a minimal lightcone-variable frame and collected in the MREV Mathematica library.
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High-energy dynamics of QCD: Theoretical and phenomenological results
Real NLO corrections to the BFKL Higgs impact factor are derived with a physical top-quark mass, and updated tetraquark fragmentation functions are applied to predict rates at 14 and 100 TeV.
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