Infrared approach to Reggeization

Del Duca, Vittorio;Duhr, Claude;Gardi, Einan;Magnea, Lorenzo;White, Chris D.
(2012) Physical Review. D, Particles, Fields, Gravitation and Cosmology — Vol. 85, n° 7, p. 71104 (2012)

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Authors
  • Del Duca, Vittorio
    Author
  • Duhr, ClaudeUCLouvain
    Author
  • Gardi, Einan
    Author
  • Magnea, Lorenzo
    Author
  • White, Chris D.
    Author
Abstract
We present a new approach to Reggeization of gauge amplitudes based on the universal properties of their infrared singularities. Using the "dipole formula", a compact ansatz for all infrared singularities of massless amplitudes, we study Reggeization of singular contributions to high-energy amplitudes for arbitrary color representations, and any logarithmic accuracy. We derive leading-logarithmic Reggeization for general cross-channel color exchanges, and we show that Reggeization breaks down for the imaginary part of the amplitude at next-to-leading logarithms and for the real part at next-to-next-to-leading logarithms. Our formalism applies to multiparticle amplitudes in multi-Regge kinematics, and constrains possible corrections to the dipole formula starting at three loops.
Affiliations
  • University of DurhamDepartment of Physics

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Del Duca, V., Duhr, C., Gardi, E., Magnea, L., & White, C. D. (2012). Infrared approach to Reggeization. Physical Review. D, Particles, Fields, Gravitation and Cosmology, 85(7), 71104. https://doi.org/10.1103/PhysRevD.85.071104 (Original work published 2012)