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Título:
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Precise determination of the ? pole location from a dispersive analysis
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Autores:
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Garcia Martin, R. ;
Kami?ski, Robert ;
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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Amer Inst Physics, 2008
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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 matemática
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Tipo = Sección de libro
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Resumen:
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We 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 ? 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 showaremarkable improvement in the precision around the ? region. For practical applications, these results are shown to be very well approximated by a very simple conformal expansion
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En línea:
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https://eprints.ucm.es/35287/1/pelaezsagredo45libre.pdf
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