Sigma pole position and errors of a once and twice subtracted dispersive analysis of π and π scattering data

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dc.contributor.authorKamiński, Robert
dc.contributor.authorGarcia-Martin, R.
dc.contributor.authorGrynkiewicz, P.
dc.contributor.authorPeláez Sagredo, José Ramón
dc.date.accessioned2023-06-20T04:03:22Z
dc.date.available2023-06-20T04:03:22Z
dc.date.issued2009-01
dc.description©Elsevier Science Bv. This talk is dedicated to the memory of F.J. Yndurain. Partial financial support from Spanish contracts PR27/05-13955-BSCH, FPA2004- 02602, UCM-CAM 910309 and BFM2003-00856.
dc.description.abstractWe show how the new precise data on kaon decays together with forward dispersion relations, sum rules and once- and twice-subtracted Roy’s equations allow for a precise determination of the sigma meson pole position. We present a comparison and a study of the different sources of uncertainties when using either once- or twicesubtracted Roy’s equations to analyze the data. Finally we present a preliminary determination of the σ pole from the constrained dispersive data analysis.
dc.description.departmentDepto. de Física Teórica
dc.description.facultyFac. de Ciencias Físicas
dc.description.refereedTRUE
dc.description.sponsorshipUCM-CAM
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/35190
dc.identifier.doi10.1016/j.nuclphysbps.2008.12.071
dc.identifier.issn0920-5632
dc.identifier.officialurlhttp://dx.doi.org/10.1016/j.nuclphysbps.2008.12.071
dc.identifier.relatedurlhttp://www.sciencedirect.com/
dc.identifier.relatedurlhttp://arxiv.org/abs/0811.4510
dc.identifier.urihttps://hdl.handle.net/20.500.14352/44857
dc.issue.number15
dc.journal.titleNuclear Physics B
dc.language.isoeng
dc.page.final321
dc.page.initial318
dc.publisherElsevier Science Bv
dc.relation.projectIDPR27/05-13955-BSCH
dc.relation.projectIDFPA2004- 02602
dc.relation.projectIDUCM-CAM 910309
dc.relation.projectIDBFM2003-00856
dc.rights.accessRightsopen access
dc.subject.cdu51-73
dc.subject.keywordEquation
dc.subject.ucmFísica-Modelos matemáticos
dc.subject.ucmFísica atmosférica
dc.subject.unesco2501 Ciencias de la Atmósfera
dc.titleSigma pole position and errors of a once and twice subtracted dispersive analysis of π and π scattering data
dc.typejournal article
dc.volume.number10
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dspace.entity.typePublication
relation.isAuthorOfPublication70900239-cb8b-49f3-931f-9dc6a8b7d8d5
relation.isAuthorOfPublication.latestForDiscovery70900239-cb8b-49f3-931f-9dc6a8b7d8d5

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