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New measurement of the $K^{\pm} \to \pi^+\pi^-e^{\pm}\nu(K_{e4} )$ decay branching ratio and hadronic form factors
A sample of more than one million $K^{\pm} \rightarrow \pi^{+} \pi^{-} e^{\pm} \nu$ ($K_{e4}$) decay candidates with less than one percent background contamination has been collected by the NA48/2 experiment at the CERN SPS in 2003--2004, allowing a detailed study of the decay properties. The bran...
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Lenguaje: | eng |
Publicado: |
2012
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Materias: | |
Acceso en línea: | https://dx.doi.org/10.1016/j.physletb.2012.07.048 https://dx.doi.org/10.1016/j.physletb.2014.12.020 http://cds.cern.ch/record/1435185 |