The NA62 Experiment at CERN: Prospects for the K+ ->pi+ nu nubar Measurement

The NA62 Experiment aims to measure the branching ratio of the ultra-rare K+ !p+n ¯ n decay with 10% precision, collecting 100 events with the SM branching fraction in 3 years of data taking. The NA62 experimental strategy and the detector layout are describe

New limits on heavy neutrinos at NA62

The NA62 experiment at CERN collected a large sample of charged kaon decays in flight with a minimum bias trigger in 2007. Upper limits on the rate of the charged kaon decay into a muon and a heavy neutrino obtained from this data are reported for a range of heavy neutrino masses. Prospects for similar searches using data collected in 2015 are also reported

The neutral pion form factor at NA62

In 2007 the NA62 experiment at CERN collected a large sample of charged kaon decays with a highly efficient trigger selecting events with electrons in the final state. The kaon beam represents a rich source of tagged neutral pion decays in vacuum. The electromagnetic transition form factor slope of the π0 in the time-like region has been measured from about 106 fully reconstructed π0 Dalitz decays collected in 2007. The preliminary result a = (3.68 ± 0.51stat ± 0.25syst) × 10-2 is the most precise to date. This value is compatible with theoretical expectations and consistent with the previous measurements