$K^± → π^±γγ$ Studies at NA48/2 and NA62-RK Experiments at CERN
(2016)
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- Abstract
- 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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Citations
Velghe, B., NA62-RK, & NA48/2. (2016). $K^± → π^±γγ$ Studies at NA48/2 and NA62-RK Experiments at CERN. Nuclear and Particle Physics Proceedings, 273-275, 2720. https://doi.org/10.1016/j.nuclphysbps.2015.10.042 (Original work published 2016)