A measurement of the branching ratio of the rare leptonic kaon decay± → μ±νμe+e- is presented using data collected by the NA48/2 experiment in 2003 and 2004. The measurement is performed in the region Mee > 140 MeV/c2. In this particular region low energy QCD contributions become important and can be calculated in the framework of Chiral Perturbation Theory (ChPT). From a total number of 1.56 × 1011 recorded kaon decays, the branching ratio is measured to be B (K± → μ±νμe+e-|Mee > 140MeV/c2) = (7.8 ±0.2) × 10-8.

Model independent measurement of the leptonic kaon decay K± → μ±νμe+e- with the NA48/2 experiment / Marchevski, R., Anzivino, G., Arcidiacono, R., Baldini, W., Balev, S., Batley, J.R., Behler, M., Bifani, S., Biino, C., Bizzeti, A., Bloch-Devaux, B., Bocquet, G., Cabibbo, N., Calvetti, M., Cartiglia, N., Ceccucci, A., Cenci, P., Cerri, C., Cheshkov, C., Cheze, J.B., et al.. - In: POS PROCEEDINGS OF SCIENCE. - ISSN 1824-8039. - 128556:(2016), pp. N/A-N/A. (38th International Conference on High Energy Physics, ICHEP 2016 usa 2016).

Model independent measurement of the leptonic kaon decay K± → μ±νμe+e- with the NA48/2 experiment

Bizzeti A.;
2016

Abstract

A measurement of the branching ratio of the rare leptonic kaon decay± → μ±νμe+e- is presented using data collected by the NA48/2 experiment in 2003 and 2004. The measurement is performed in the region Mee > 140 MeV/c2. In this particular region low energy QCD contributions become important and can be calculated in the framework of Chiral Perturbation Theory (ChPT). From a total number of 1.56 × 1011 recorded kaon decays, the branching ratio is measured to be B (K± → μ±νμe+e-|Mee > 140MeV/c2) = (7.8 ±0.2) × 10-8.
2016
38th International Conference on High Energy Physics, ICHEP 2016
usa
2016
128556
N/A
N/A
Marchevski, R.; Anzivino, G.; Arcidiacono, R.; Baldini, W.; Balev, S.; Batley, J. R.; Behler, M.; Bifani, S.; Biino, C.; Bizzeti, A.; Bloch-Devaux, B....espandi
Model independent measurement of the leptonic kaon decay K± → μ±νμe+e- with the NA48/2 experiment / Marchevski, R., Anzivino, G., Arcidiacono, R., Baldini, W., Balev, S., Batley, J.R., Behler, M., Bifani, S., Biino, C., Bizzeti, A., Bloch-Devaux, B., Bocquet, G., Cabibbo, N., Calvetti, M., Cartiglia, N., Ceccucci, A., Cenci, P., Cerri, C., Cheshkov, C., Cheze, J.B., et al.. - In: POS PROCEEDINGS OF SCIENCE. - ISSN 1824-8039. - 128556:(2016), pp. N/A-N/A. (38th International Conference on High Energy Physics, ICHEP 2016 usa 2016).
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/1210071
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