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Global parameterization of pi pi scattering up to 2 GeV

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dc.contributor.authorPeláez Sagredo, José Ramón
dc.contributor.authorRodas Bilbao, Arkaitz
dc.contributor.authorRuiz De Elvira Carrascal, Jacobo
dc.date.accessioned2023-06-16T15:15:49Z
dc.date.available2023-06-16T15:15:49Z
dc.date.issued2019-12
dc.description© The Author(s) 2019. We thank prof. W. Ochs for his comments and for providing us with the data of his updated (-+-) solution. JRP and AR are supported by the Spanish project FPA2016-75654-C2-2-P. This project has received funding from the European Union's Horizon 2020 research and innovation program under Grant agreement No.824093. AR would also like to acknowledge the financial support of the Universidad Complutense de Madrid through a predoctoral scholarship. JRE is supported by the Swiss National Science Foundation, project No. PZ00P2_174228.
dc.description.abstractWe provide global parameterizations of pi pi -> pi pi scattering S0 and P partial waves up to roughly 2 GeV for phenomenological use. These parameterizations describe the output and uncertainties of previous partial-wave dispersive analyses of pi pi -> pi pi, both in the real axis up to 1.12 GeV and in the complex plane within their applicability region, while also fulfilling forward dispersion relations up to 1.43 GeV. Above that energy we just describe the available experimental data. Moreover, the analytic continuations of these global parameterizations also describe accurately the dispersive determinations of the sigma/f(0)(500), f(0)(980) and rho(770) pole parameters.
dc.description.departmentDepto. de Física Teórica
dc.description.facultyFac. de Ciencias Físicas
dc.description.refereedTRUE
dc.description.sponsorshipUnión Europea. H2020
dc.description.sponsorshipMinisterio de Economía y Competitividad (MINECO)/FEDER
dc.description.sponsorshipSwiss National Science Foundation (SNSF)
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/58782
dc.identifier.doi10.1140/epjc/s10052-019-7509-6
dc.identifier.issn1434-6044
dc.identifier.officialurlhttp://dx.doi.org/10.1140/epjc/s10052-019-7509-6
dc.identifier.relatedurlhttps://link.springer.com/
dc.identifier.urihttps://hdl.handle.net/20.500.14352/6034
dc.issue.number12
dc.journal.titleEuropean physical journal C
dc.language.isoeng
dc.publisherSpringer
dc.relation.projectIDSTRONG-2020 (824093)
dc.relation.projectIDFPA2016-75654-C2-2-P
dc.relation.projectIDPZ00P2_174228
dc.rightsAtribución 3.0 España
dc.rights.accessRightsopen access
dc.rights.urihttps://creativecommons.org/licenses/by/3.0/es/
dc.subject.cdu51-73
dc.subject.keywordChiral perturbation theory
dc.subject.keywordPartial wave analysis
dc.subject.keywordPhase shift analysis
dc.subject.keywordAmplitude analysis
dc.subject.keywordEquation analysis
dc.subject.keywordRho meson
dc.subject.keywordRoy
dc.subject.keywordExistence
dc.subject.keywordUnitarity
dc.subject.keywordProof.
dc.subject.ucmFísica-Modelos matemáticos
dc.subject.ucmFísica matemática
dc.titleGlobal parameterization of pi pi scattering up to 2 GeV
dc.typejournal article
dc.volume.number79
dspace.entity.typePublication
relation.isAuthorOfPublication70900239-cb8b-49f3-931f-9dc6a8b7d8d5
relation.isAuthorOfPublication4eca272b-1469-482b-81af-0100045cbaed
relation.isAuthorOfPublication7f9c347a-51bd-41f0-80a7-59358aed6585
relation.isAuthorOfPublication.latestForDiscovery4eca272b-1469-482b-81af-0100045cbaed

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