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Título:
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? ????? decay within a chiral unitary approach
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Autores:
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Oller, J. A. ;
Oset, E. ;
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 Physical Soc, 2000-10-01
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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 matemática
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Tipo = Artículo
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Resumen:
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Starting from the chiral perturbation theory Lagrangian, but keeping different masses for the charged and neutral mesons (m_u ? m_d), and using a previously developed nonperturbative unitary scheme that generates the lightest meson-meson resonances, we construct KK??KK? and KK?????? in the vector channel. This allows us to obtain the kaon-loop contribution to ?-? mixing and study the ?????? decay. The dominant contribution to this decay comes from the ???????? process. However, there can be large interferences with the subdominant contributions coming from ?-? and ?-? mixing, or of these two contributions among themselves. As a consequence, a reliable measurement of ?????? decay could be used to differentiate between some ?-? mixing scenarios proposed in the literature.
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En línea:
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https://eprints.ucm.es/35601/1/pelaezsagredo92libre.pdf
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