We report here the first observation by the NA48/2 experiment of the rare decay K± → π±π0e+e-. From a sample of about 2000 decay candidates collected in 2003, a preliminary value of the branching ratio in the full kinematic space has been obtained as (4.06 ± 0.17) · 10-6.

First observation of K± → π±π0e+e- decay at NA48 / Fantechi, 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. - 22-29-:(2015), pp. N/A-N/A. (23rd European Physical Society Conference on High Energy Physics, EPS-HEP 2015 aut 2015).

First observation of K± → π±π0e+e- decay at NA48

Bizzeti A.;
2015

Abstract

We report here the first observation by the NA48/2 experiment of the rare decay K± → π±π0e+e-. From a sample of about 2000 decay candidates collected in 2003, a preliminary value of the branching ratio in the full kinematic space has been obtained as (4.06 ± 0.17) · 10-6.
2015
23rd European Physical Society Conference on High Energy Physics, EPS-HEP 2015
aut
2015
22-29-
N/A
N/A
Fantechi, R.; Anzivino, G.; Arcidiacono, R.; Baldini, W.; Balev, S.; Batley, J. R.; Behler, M.; Bifani, S.; Biino, C.; Bizzeti, A.; Bloch-Devaux, B.; ...espandi
First observation of K± → π±π0e+e- decay at NA48 / Fantechi, 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. - 22-29-:(2015), pp. N/A-N/A. (23rd European Physical Society Conference on High Energy Physics, EPS-HEP 2015 aut 2015).
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/1210083
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