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Precise dispersive data analysis of the f_0(600) pole

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dc.contributor.authorGarcia-Martin, R
dc.contributor.authorKamiński, Robert
dc.contributor.authorPeláez Sagredo, José Ramón
dc.date.accessioned2023-06-20T04:03:08Z
dc.date.available2023-06-20T04:03:08Z
dc.date.issued2009-01-03
dc.description©World scientific publ co pte LTD. Conference MESON 2008 (2008.Cracow, Polonia). This work is dedicated to the memory of Prof. F. J. Yndur ain. We thank H. Leutwyler for his comment about the matching condition, and the organizers for creating the nice scientific atmosphere of the event and the Spanish research contracts PR27/05-13955-BSCH, FPA2004-02602, UCM-CAM 910309 and BFM2003-00856 for partial
dc.description.abstractWe review how the use of recent precise data on kaon decays together with forward dispersion relations (FDR) and Roy’s equations allow us to determine the sigma resonance pole position very precisely, by using only experimental input. In addition, we present preliminary results for a modified set of Roy-like equations with only one subtraction, that show a remarkable improvement in the precision around the σ region. We also improve the matching between the parametrizations at low and intermediate energy of the S0 wave, and show that the effect of this on the sigma pole position is negligible.
dc.description.departmentDepto. de Física Teórica
dc.description.facultyFac. de Ciencias Físicas
dc.description.refereedTRUE
dc.description.sponsorshipBSCH
dc.description.sponsorshipUCM-CAM
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/35182
dc.identifier.doi10.1142/S0217751X09044140
dc.identifier.issn0217-751X
dc.identifier.officialurlhttp://dx.doi.org/10.1142/S0217751X09044140
dc.identifier.relatedurlhttp://www.worldscientific.com
dc.identifier.urihttps://hdl.handle.net/20.500.14352/44852
dc.issue.number2-mar
dc.journal.titleInternational journal of modern physics A
dc.language.isoeng
dc.page.final593
dc.page.initial590
dc.publisherWorld scientific publ co pte LTD
dc.relation.projectIDPR27/05-13955-BSCH
dc.relation.projectIDFPA2004-02602
dc.relation.projectID910309
dc.relation.projectIDBFM2003-00856
dc.rights.accessRightsopen access
dc.subject.cdu51-73
dc.subject.keywordScattering
dc.subject.keywordRoy's equations
dc.subject.keywordDispersion relations
dc.subject.keywordSigma
dc.subject.keywordscalar mesons
dc.subject.ucmFísica-Modelos matemáticos
dc.subject.ucmFísica matemática
dc.titlePrecise dispersive data analysis of the f_0(600) pole
dc.typejournal article
dc.volume.number24
dcterms.references1. W. M. Yao, et al., J. Phys. G33, 1–1232 (2006). 2. A. Dobado, and J. R. Pelaez, Phys. Rev. D56, 3057–3073 (1997). 3. Z. Y. Zhou, et al., JHEP 02, 043 (2005). 4. S. M. Roy, Phys. Lett. B36, 353 (1971). 5. I. Caprini, G. Colangelo, and H. Leutwyler, Phys. Rev. Lett. 96, 132001 (2006). 6. S. Pislak, et al., Phys. Rev. Lett. 87, 221801 (2001). 7. J. R. Batley, et al. (2008), cERN-PH-EP-2007-035. 8. R. Kaminski, R. Garcia-Martin, P. Grynkiewicz, J. R. Pelaez and F. J. Yndurain, arXiv:0809.4766 [hep-ph]. 9. J. R. Pelaez et al., AIP Conf. Proc. 1030 (2008) 257 10. F. J. Yndurain, R. Garcia-Martin, and J. R. Pelaez, Phys. Rev. D76, 074034 (2007). 11. R. Kaminski, J. R. Pelaez and F. J. Yndurain, Phys. Rev. D 77 (2008) 054015. 12. H. Leutwyler, AIP Conf. Proc. 892 (2007) 58.
dspace.entity.typePublication
relation.isAuthorOfPublication70900239-cb8b-49f3-931f-9dc6a8b7d8d5
relation.isAuthorOfPublication.latestForDiscovery70900239-cb8b-49f3-931f-9dc6a8b7d8d5

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