A sample of about 300 K± → π±γγ rare decays with a background contamination below 10% 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.
Study of the rare decay K± → π±γγ in the NA48/2 and NA62 experiments at CERN / Ambrosino, F.; Corvino, M.; Massarotti, P.; Mirra, M.; Napolitano, M.; Saracino, G.. - (2013), pp. 279-282. (Intervento presentato al convegno 48th Rencontres de Moriond on QCD and High Energy Interactions 2013 tenutosi a Aosta Valley, ita nel 2013).
Study of the rare decay K± → π±γγ in the NA48/2 and NA62 experiments at CERN
Ambrosino F.;Corvino M.;Massarotti P.;Napolitano M.;Saracino G.
2013
Abstract
A sample of about 300 K± → π±γγ rare decays with a background contamination below 10% 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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
