On the Subleading-Soft Behaviour of QCD Amplitudes

Abstract

We elaborate on the radiative behaviour of tree-level scattering amplitudes in the soft regime. We show that the sub-leading soft term in single-gluon emission of quark-gluon amplitudes in QCD is controlled by differential operators, whose universal form can be derived from both on-shell recursion relation and gauge invariance, as it was shown to hold for graviton- and gluon-scattering.

arXiv comment24 pages, 4 figures

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Cited by in corpus (19)

• Infinite-Dimensional Fermionic Symmetry in Supersymmetric Gauge Theories
• Asymptotic Symmetries and Weinberg's Soft Photon Theorem in Mink${}_{d+2}$
• Subsubleading soft theorems of gravitons and dilatons in the bosonic string
• Double Soft Theorems and Shift Symmetry in Nonlinear Sigma Models
• Higher-order power corrections in a transverse-momentum cut for colour-singlet production at NLO
• On single and double soft behaviors in NLSM
• Double-soft behavior for scalars and gluons from string theory
• The LBK theorem to all orders
• Soft Theorems from Effective Field Theory
• Multi-soft theorems in Gauge Theory from MHV Diagrams
• All-order celestial OPE from on-shell recursion
• A Note on Soft Factors for Closed String Scattering
• A factorization approach to next-to-leading-power threshold logarithms
• Soft factors from classical scattering on the Reissner-Nordström spacetime
• Double Soft Theorems in Gauge and String Theories
• Note on Identities Inspired by New Soft Theorems
• Multiple soft-photon emission at next-to-leading power to all orders
• Subleading soft radiation during scattering of dressed states in QED
• QCD Critical Point and Net-Proton Number Fluctuations at RHIC-STAR