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Study of high-mass photon pairs in $e^{+}e^{-}\gamma\gamma$ events
From the analysis of the reactions $e^{+} e^{-} \to e^{+} e^{-} + (n\gamma s) (1=e,\nu,\tau)$ we observe four events, one $e^{+} e^{-} \gamma\gamma$and three $\mu^{+} \mu^{-} \gamma\gamma$, with the invariant mass of the photon pairs close to 60 $GeV/c^{2}$. These events were selected from a datasam...
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| Lenguaje: | eng |
| Publicado: |
1992
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| Acceso en línea: | http://cds.cern.ch/record/328990 |