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Regge trajectories of ordinary and non-ordinary mesons from their scattering poles.

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dc.book.titleXIth Conference on Quark Confinement and Hadron Spectrum
dc.contributor.authorNebreda Manjón, Jenifer
dc.contributor.authorCarrasco, J. A.
dc.contributor.authorLondergan, J. T.
dc.contributor.authorPeláez Sagredo, José Ramón
dc.contributor.authorSzczepaniak, Adam P.
dc.date.accessioned2023-06-18T07:15:16Z
dc.date.available2023-06-18T07:15:16Z
dc.date.issued2016
dc.description© 2016 AIP Publishing LLC. Conference on Quark Confinement and Hadron Spectrum (11ª. 2014. San Petersburgo, Rusia). J.N. wants to thank the organizers of the conference for giving her the opportunity to present this work. J.R.P. and J.N. are supported by the Spanish project FPA2011-27853-C02-02. JN acknowledges funding by the Deutscher Akademischer Austauschdienst (DAAD), the Fundación Ramón Areces and the hospitality of Bonn and Indiana Universities. A.P.S is supported in part by the U.S. Department of Energy under Grant DE-FG0287ER40365. J.T.L. is supported by the U.S. National Science Foundation under grant PHY-1205019.
dc.description.abstractOur results on obtaining the Regge trajectory of a resonance from its pole in a scattering process and from analytic constraints in the complex angular momentum plane are presented. The method, suited for resonances that dominate an elastic scattering amplitude, has been applied to the ρ(770), ƒ_2(1270), ƒ_2(1525) and ƒ_0(500) resonances. Whereas for the first three we obtain linear Regge trajectories, characteristic of ordinary quark-antiquark states, for the latter we find a non-linear trajectory with a much smaller slope at the resonance mass. We also show that if a linear trajectory with a slope of typical size is imposed for the ƒ_0(500), the corresponding amplitude is at odds with the data. This provides a strong indication of the non-ordinary nature of the sigma meson.
dc.description.departmentDepto. de Física Teórica
dc.description.facultyFac. de Ciencias Físicas
dc.description.refereedTRUE
dc.description.sponsorshipMinisterio de Economía y Competitividad (MINECO)
dc.description.sponsorshipDeutscher Akademischer Austauschdienst (DAAD), Alemania
dc.description.sponsorshipFundación Ramón Areces
dc.description.sponsorshipU.S. Department of Energy
dc.description.sponsorshipU.S. National Science Foundation (NSF)
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/37094
dc.identifier.doi10.1063/1.4938632
dc.identifier.isbn978-0-7354-1348-1
dc.identifier.officialurlhttp://dx.doi.org/10.1063/1.4938632
dc.identifier.relatedurlhttp://scitation.aip.org/
dc.identifier.relatedurlhttp://arxiv.org/abs/1412.5894#
dc.identifier.urihttps://hdl.handle.net/20.500.14352/24870
dc.issue.number1701
dc.language.isoeng
dc.publisherAmerican Institute of Physics AIP
dc.relation.ispartofseriesAIP Conference Proceedings
dc.relation.projectIDFPA2011-27853-C02-02
dc.relation.projectIDDE-FG0287ER40365
dc.relation.projectIDPHY-1205019
dc.rights.accessRightsopen access
dc.subject.cdu51-73
dc.subject.keywordRegge Theory
dc.subject.keywordLight scalar mesons.
dc.subject.ucmFísica-Modelos matemáticos
dc.subject.ucmFísica matemática
dc.titleRegge trajectories of ordinary and non-ordinary mesons from their scattering poles.
dc.typebook part
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relation.isAuthorOfPublication70900239-cb8b-49f3-931f-9dc6a8b7d8d5
relation.isAuthorOfPublication.latestForDiscovery70900239-cb8b-49f3-931f-9dc6a8b7d8d5

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