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K±→π±γγ Studies at NA48/2 and NA62-RK Experiments at CERN | Synapse

April 1, 2016Open Access

K±→π±γγ Studies at NA48/2 and NA62-RK Experiments at CERN

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Resumen

Final results from an analysis of about 400K±→π±γγ rare decay candidates collected by the NA48/2 and NA62-RK experiments at CERN during low intensity runs with minimum bias trigger configurations are presented. The results include a model-independent decay rate measurement and fits to Chiral Perturbation Theory (ChPT) description. The data support the ChPT prediction for a cusp in the di-photon invariant mass spectrum at the two pion threshold.

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Cite This Study

B. Velghe (Fri,) studied this question.

synapsesocial.com/papers/69d7814ff44a16d01ef318f7 https://doi.org/https://doi.org/10.1016/j.nuclphysbps.2015.10.042

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