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The Discrepancy Between Tau and $e^+ e^-$ Spectral Functions Revisited and the Consequences for the Muon Magnetic

We revisit the procedure for comparing the pi pi spectral function measured in tau decays to that obtained in e+e- annihilation. We re-examine the isospin-breaking corrections using new experimental and theoretical input, and find improved agreement between the tau- --> pi- pi0 nu_tau branching f...

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Detalles Bibliográficos
Autores principales:	Davier, M, Höcker, A, López-Castro, G, Malaescu, B, Mo, X H, Toledo Sanchez, G, Wang, P, Yuan, C Z, Zhang, Z
Lenguaje:	eng
Publicado:	2009
Materias:	Particle Physics - Phenomenology
Acceso en línea:	https://dx.doi.org/10.1140/epjc/s10052-009-1219-4 http://cds.cern.ch/record/1187123

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