Exploring Inelasticity in the S-Matrix Bootstrap

Leite Antunes, António; Costa, Miguel; Pereira, José

doi:10.1016/j.physletb.2023.138225

Journal Article

PUBDB-2023-00674

Exploring Inelasticity in the S-Matrix Bootstrap

Leite Antunes, A. (Corresponding author)DESY* ; Costa, M. ; Pereira, J.

2023
North-Holland Publ. Amsterdam

Physics letters / B 846, 138225 (2023) [10.1016/j.physletb.2023.138225]

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Please use a persistent id in citations: doi:10.1016/j.physletb.2023.138225 doi:10.3204/PUBDB-2023-00674

Report No.: DESY-23-015; arXiv:2301.13219

Abstract: The modern S-Matrix Bootstrap provides non-perturbative bounds on low-energy aspects of scattering amplitudes, leveraging the constraints of unitarity, analyticity and crossing. Typically, the solutions saturating such bounds also saturate the unitarity constraint as much as possible, meaning that they are almost exclusively elastic. This is expected to be unphysical in $d>2$ because of Aks' theorem. We explore this issue by adding inelasticity as an additional input, both using a primal approach in general dimensions which extends the usual ansatz, and establishing a dual formulation in the 2d case. We then measure the effects on the low-energy observables where we observe stronger bounds than in the standard setup.

Classification:

ddc:530

Note: 8 pages, 14 figures

Contributing Institute(s):

Theorie-Gruppe (T)

Research Program(s):

Experiment(s):

No specific instrument

Appears in the scientific report 2023

Database coverage:
Medline

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