Next-to-soft corrections to high energy scattering in QCD and gravity

Luna, A., Melville, S., Naculich, S.G. and White, C.D. (2017) Next-to-soft corrections to high energy scattering in QCD and gravity. Journal of High Energy Physics, 2017(1), 52. (doi: 10.1007/JHEP01(2017)052)

Abstract

AbstractWe examine the Regge (high energy) limit of 4-point scattering in both QCD and gravity, using recently developed techniques to systematically compute all corrections up to next-to-leading power in the exchanged momentum i.e. beyond the eikonal approximation. We consider the situation of two scalar particles of arbitrary mass, thus generalising previous calculations in the literature. In QCD, our calculation describes power-suppressed corrections to the Reggeisation of the gluon. In gravity, we confirm a previous conjecture that next-to-soft corrections correspond to two independent deflection angles for the incoming particles. Our calculations in QCD and gravity are consistent with the well-known double copy relating amplitudes in the two theories.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Luna Godoy, Mr Andres and Melville, Stacey Elizabeth
• Authors: Luna, A., Melville, S., Naculich, S.G., and White, C.D.
• College/School: College of Science and Engineering > School of Physics and Astronomy
• Journal Name: Journal of High Energy Physics
• Publisher: Springer
• ISSN: 1126-6708
• ISSN (Online): 1029-8479
• Published Online: 12 January 2017
• Copyright Holders: Copyright © 2017 The Authors
• First Published: First published in Journal of High Energy Physics 2017(1): 52
• Publisher Policy: Reproduced under a Creative Commons License