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Search for the dark photon in $\pi^0$ decays by the NA48/2 experiment at CERN
A sample of $4.687\times 10^6$ fully reconstructed $K^\pm\to\pi^\pm\pi^0_D$, $\pi^0_D\to\gamma e^+e^-$ decay candidates in the kinematic range $m_{ee}>10~{\rm MeV}/c^2$ with a negligible background contamination collected by the NA48/2 experiment at CERN in 2003-04 is analysed to search for the d...
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| Lenguaje: | eng |
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2014
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| Acceso en línea: | https://dx.doi.org/10.1051/epjconf/20159601017 http://cds.cern.ch/record/1979116 |