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The Stringy S-matrix Bootstrap: Maximal Spin and Superpolynomial Softness / Häring, Kelian (CERN ; Ecole Polytechnique, Lausanne) ; Zhiboedov, Alexander (CERN)
We explore the space of meromorphic amplitudes with extra constraints coming from the shape of the leading Regge trajectory. This information comes in two guises: it bounds the maximal spin of exchanged particles of a given mass; it leads to sum rules obeyed by the discontinuity of the amplitude, which express the softness of scattering at high energies. [...]
arXiv:2311.13631; CERN-TH-2023-214.- 2024-10-09 - 56 p. - Published in : JHEP 2410 (2024) 075 Fulltext: document - PDF; 2311.13631 - PDF;

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