English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We use our current understanding of the all-order singularity structure ofgauge theory amplitudes to probe their high-energy limit. Our starting point isthe dipole formula, a compact ansatz for the soft anomalous dimension matrix ofmassless multi-particle amplitudes. In the high-energy limit, we find a simpleand general expression for the infrared factor generating all soft andcollinear singularities of the amplitude, which is valid to leading power in$|t|/s$ and to all logarithmic orders. This leads to a direct and general proofof leading-logarithmic Reggeization for infrared divergent contributions to theamplitude. Furthermore, we can prove explicitly that the simplest form ofReggeization, based on the absence of Regge cuts in the complex angularmomentum plane, breaks down at the NNLL level. Finally, we note that the knownfeatures of the high-energy limit can be used to constrain possible correctionsto the dipole formula, starting at the three-loop order.

Infrared singularities in the high-energy limit