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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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| Lenguaje: | eng |
| Publicado: |
1995
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| Acceso en línea: | http://cds.cern.ch/record/398746 |
| _version_ | 1780894031216115712 |
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| author | Bourdon, P |
| author_facet | Bourdon, P |
| author_sort | Bourdon, P |
| collection | CERN |
| description | 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 mass spectra. We see compatible contributions in 2 samples: one with 3 photons in which we fit the eta peak in one dimension, the other with 4 photons where we look for a two dimensional $(\eta,\pi^0)$ signal. |
| id | cern-398746 |
| institution | Organización Europea para la Investigación Nuclear |
| language | eng |
| publishDate | 1995 |
| record_format | invenio |
| spelling | cern-3987462019-09-30T06:29:59Zhttp://cds.cern.ch/record/398746engBourdon, PMeasurement 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 statesParticle Physics - ExperimentUsing 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 mass spectra. We see compatible contributions in 2 samples: one with 3 photons in which we fit the eta peak in one dimension, the other with 4 photons where we look for a two dimensional $(\eta,\pi^0)$ signal.CERN-OPEN-99-132EPS-0424oai:cds.cern.ch:3987461995-07-27 |
| spellingShingle | Particle Physics - Experiment Bourdon, P 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 |
| title | 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 |
| title_full | 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 |
| title_fullStr | 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 |
| title_full_unstemmed | 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 |
| title_short | 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 |
| title_sort | 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 |
| topic | Particle Physics - Experiment |
| url | http://cds.cern.ch/record/398746 |
| work_keys_str_mv | AT bourdonp measurementofthetautoetapipidegreenutaubranchingratiousingetatogammagammaandetatopipipi0finalstates |