Speaker
Dmitry Madigozhin
Description
We report the first observation of the decay K± → π0 π0 μ± ν (K00µ4) by the NA48/2 experiment at the CERN-SPS. From 2437 detected signal candidates with a S/B ratio of about 6, the branching ratio of the decay is determined with high precision. The result is converted into a first measurement of the R form factor in Kl4 decays and compared with the prediction from 1-loop Chiral Perturbation Theory.
| In-person participation | No |
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