Open Access, (c) The Authors. Article funded by SCOAP 3

A Brandhuber

AE Lipstein

BUW Schwab

C Cheung

C Kalousios

D Kapec

D Maître

D Nandan

Dhritiman Nandan

E Casali

F Cachazo

FE Low

G Barnich

Gabriele Travaglini

H Bondi

J Bedford

J Broedel

Jan Plefka

LJ Dixon

M Zlotnikov

N Arkani-Hamed

R Britto

R Sachs

S Weinberg

SL Adler

T Adamo

T Schuster

TH Burnett

Thomas Klose

Tristan McLoughlin

Y Geyer

Z Bern

Journal of High Energy Physics

arXiv

Crossref

Double-soft limits of gluons and gravitons

The double-soft limit of gluon and graviton amplitudes is studied in four dimen-sions at tree level. In general this limit is ambiguous and we introduce two natural ways of taking it: A consecutive double-soft limit where one particle is taken soft before the other and a simultaneous limit where both particles are taken soft uniformly. All limits yield universal factorisation formulae which we establish by BCFW recursion relations down to the subleading order in the soft momentum expansion. These formulae generalise the recently discussed subleading single-soft theorems. While both types of limits yield identical results at the leading or-der, differences appear at the subleading order. Finally, we discuss double-scalar emission in N = 4 super Yang-Mills theory. These results should be of use in es-tablishing the algebraic structure of potential hidden symmetries in the quantum gravity and Yang-Mills S-matrix

Tristan Mcloughlin

Dhritiman N

CiteSeerX

Double-Soft Limits of Gluons and Gravitons

Springer - Publisher Connector

Klose, T

McLoughlin, T

Nandan, D

Plefka, J

Travaglini, G

Queen Mary Research Online

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Double-soft limits of gluons and gravitons

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Crossref

CiteSeerX

Springer - Publisher Connector

Queen Mary Research Online