Oller, J. A. y Oset, E. y Peláez Sagredo, José Ramón (2000) φ →π⁺π⁻ decay within a chiral unitary approach. Physical review D, 62 (11). ISSN 1550-7998
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URL Oficial: http://dx.doi.org/10.1103/PhysRevD.62.114017
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http://journals.aps.org | Editorial |
Resumen
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 KK̅→KK̅ and KK̅→π⁺π⁻ in the vector channel. This allows us to obtain the kaon-loop contribution to φ-ρ mixing and study the φ→π⁺π⁻ decay. The dominant contribution to this decay comes from the φ→ϒ→π⁺π⁻ process. However, there can be large interferences with the subdominant contributions coming from φ-ρ and φ-ω mixing, or of these two contributions among themselves. As a consequence, a reliable measurement of φ→π⁺π⁻ decay could be used to differentiate between some φ-ω mixing scenarios proposed in the literature.
Tipo de documento: | Artículo |
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Información Adicional: | ©2000 The American Physical Society. |
Palabras clave: | Phase-shift analysis; Zweig-Iizuka rule; Pion form-factor; Perturbation-theory; Gev-C; Kpi scattering; One-loop; Elastic-scattering; Meson interactions; Hadronic loops |
Materias: | Ciencias > Física > Física-Modelos matemáticos Ciencias > Física > Física matemática |
Código ID: | 35601 |
Depositado: | 09 Feb 2016 18:05 |
Última Modificación: | 10 Dic 2018 15:10 |
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