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Dispersive analysis of the decay $\eta$ -> 3 $\pi$

We demonstrate that the decay eta -> 3 pi represents a sensitive probe for the breaking of chiral symmetry by the quark masses. The transition amplitude is proportional to the mass ratio (m_d^2-m_u^2)/(m_s^2-m^2). The factor of proportionality is calculated by means of dispersion relations, using...

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Detalles Bibliográficos
Autores principales:	Anisovich, A.V., Leutwyler, H.
Lenguaje:	eng
Publicado:	1996
Materias:	Particle Physics - Phenomenology
Acceso en línea:	https://dx.doi.org/10.1016/0370-2693(96)00192-X http://cds.cern.ch/record/293997

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