English

Reggeization in Color

High Energy Physics - Phenomenology 2024-11-15 v1 High Energy Physics - Theory Nuclear Theory

Abstract

In the high energy limit, sts\gg -t, amplitudes in planar gauge theories Reggeize, with power law behavior (st)α(t)\big( \frac{s}{-t} \big)^{\alpha(t)} governed by the Regge trajectory α(t)\alpha(t). Beyond the planar limit this simplicity is violated by "Regge cuts", for which practical organizational principles are still being developed. We use a top-down effective field theory organization based on color projection in the tt channel and rapidity evolution equations for collinear impact factors, to sum large sts\gg -t logarithms for Regge cut contributions. The results are matrix equations which are closed within a given color channel. To illustrate the method we derive in QCD with SU(Nc)SU(N_c) for the first time a closed 6×\times6 evolution equation for the "decupletons" in the 1010\text{10}\oplus\overline{\text{10}} Regge color channel, a 2×\times2 evolution equation for the "triantapentons" in the 3535\text{35}\oplus\overline{\text{35}} color channel, and a scalar evolution equation for the "tetrahexaconton" in the 64 color channel. More broadly, our approach allows us to describe generic Reggeization phenomena in non-planar gauge theories, providing valuable data for the all loop structure of amplitudes beyond the planar limit.

Cite

@article{arxiv.2411.09692,
  title  = {Reggeization in Color},
  author = {Anjie Gao and Ian Moult and Sanjay Raman and Gregory Ridgway and Iain W. Stewart},
  journal= {arXiv preprint arXiv:2411.09692},
  year   = {2024}
}

Comments

27 pages, 3 figures

R2 v1 2026-06-28T20:00:19.036Z