Blar i UiS Brage på forfatter "Penco, Riccardo"
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Fractional Soft Limits of Scattering Amplitudes
Brauner, Tomas; Esposito, Angelo; Penco, Riccardo (Peer reviewed; Journal article, 2022)It is a common lore that the amplitude for a scattering process involving one soft Nambu-Goldstone boson should scale like an integer power of the soft momentum. We revisit this expectation by considering the 2 → 2 scattering ...