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Título:
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Sigma pole position and errors of a once and twice subtracted dispersive analysis of ? and ? scattering data
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Autores:
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Kami?ski, Robert ;
Garcia-Martin, R. ;
Grynkiewicz, P. ;
Peláez Sagredo, José Ramón
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Tipo de documento:
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texto impreso
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Editorial:
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Elsevier Science BV, 2009-01
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Dimensiones:
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application/pdf
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Nota general:
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info:eu-repo/semantics/openAccess
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Idiomas:
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Palabras clave:
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Estado = Publicado
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Materia = Ciencias: Física: Física-Modelos matemáticos
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Materia = Ciencias: Física: Física atmosférica
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Tipo = Artículo
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Resumen:
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We 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 ? pole from the constrained dispersive data analysis.
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En línea:
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https://eprints.ucm.es/35190/1/pelaezsagredo39preprint.pdf
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