The quark Regge trajectory at two loops
A. V. Bogdan, V. Del Duca, V. S. Fadin, E. W. N. Glover
Abstract
The hypothesis of the quark Reggeization is tested by taking the high-energy limit of the two-loop amplitude for quark-gluon scattering which was recently calculated. The limit is compatible with the Reggeization in the leading and the next-to-leading orders and allows the determination of the quark trajectory in the two-loop approximation. The trajectory is presented as an expansion in powers of (D-4) for the space-time dimension D tending to the physical value D=4.
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