Three-body scattering: ladders and resonances

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dc.contributor.authorMikhasenko, M.
dc.contributor.authorWunderlich, Y.
dc.contributor.authorJackura, A.
dc.contributor.authorMathieu, Vincent
dc.contributor.authorPilloni, A.
dc.contributor.authorKetzer, B.
dc.contributor.authorSzczepaniak, A.P.
dc.date.accessioned2023-06-17T12:44:41Z
dc.date.available2023-06-17T12:44:41Z
dc.date.issued2019-08-14
dc.description.abstractWe discuss unitarity constraints on the dynamics of a system of three interacting particles. We show how the short-range interaction that describes three-body resonances can be separated from the long-range exchange processes, in particular the one-pion-exchange process. It is demonstrated that unitarity demands a specific functional form of the amplitude with a clear interpretation: the bare three-particle resonances are dressed by the initial- and final-state interaction, in a way that is consistent with the considered long-range forces. We postulate that the resonance kernel admits a factorization in the energy variables of the initial- and the final-state particles. The factorization assumption leads to an algebraic form for the unitarity equations, which is reminiscent of the well-known two-body-unitarity condition and approaches it in the limit of the narrow-resonance approximation.
dc.description.departmentDepto. de Física Teórica
dc.description.facultyFac. de Ciencias Físicas
dc.description.refereedTRUE
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/74446
dc.identifier.doi10.1007/JHEP08(2019)080
dc.identifier.issn1029-8479
dc.identifier.officialurlhttps://doi.org/10.1007/JHEP08%282019%29080
dc.identifier.urihttps://hdl.handle.net/20.500.14352/12881
dc.issue.number8
dc.journal.titleJournal of High Energy Physics
dc.language.isoeng
dc.publisherSpringer
dc.rightsAtribución 3.0 España
dc.rights.accessRightsopen access
dc.rights.urihttps://creativecommons.org/licenses/by/3.0/es/
dc.subject.keywordPhenomenological Models
dc.subject.keywordQCD Phenomenology
dc.subject.ucmPartículas
dc.subject.unesco2208 Nucleónica
dc.titleThree-body scattering: ladders and resonances
dc.typejournal article
dc.volume.number2019
dspace.entity.typePublication
relation.isAuthorOfPublication17de49b7-46a8-4bce-b8df-ee29abc569d8
relation.isAuthorOfPublication.latestForDiscovery17de49b7-46a8-4bce-b8df-ee29abc569d8
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