Study of the rare decay K± → π±γγ in the NA48/2 and NA62 experiments at CERN Conference Paper uri icon

abstract

  • A sample of about 300 K± → π±γγ rare decays with a background contamination below 10%25 has been collected by the NA48/2 and NA62 experiments at CERN during low intensity runs with minimum bias trigger configuration. The measurements of the decay spectrum and rate provide a crucial test of the Chiral Perturbation Theory (ChPT) describing weak processes at low energy. © ARISF 2013.

authors

publication date

  • 2013-01-01