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Measurement of the $\tau \to \eta \pi \pi^{degree} \nu_{\tau}$ branching ratio using $\eta \to \gamma \gamma$ and $\eta \to \pi^{+}\pi^{-} \pi^{0}$ final states

Using Aleph data until 1993, the branching ratio of the $\tau$ into $\eta\pi\pi^0$ has been measured using the $\eta\rightarrow \gamma\gamma$ decay. We have separated the signal from a large $\pi^0$ background by anti-tagging it and fitted the eta proportion in the remaining two photons invariant ma...

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Detalles Bibliográficos
Autor principal: Bourdon, P
Lenguaje:eng
Publicado: 1995
Materias:
Acceso en línea:http://cds.cern.ch/record/398746