The NA62 Experiment and Its First Result of the Measurement of the Rare Charge Kaon Decay into Charge Pion and Neutrino-anti-Neutrino Pair
Gia Khoriauli (Universität Mainz)

"The NA62 is a fixed target experiment at CERN operating with 400 GeV/c proton beam supplied by the CERN SPS accelerator facility. A secondary beam of positively charged Kaons with the 75 GeV/c momentum is selected after the target. The NA62 aims to collect 10^{13} charged Kaon decays to be able to measure the branching ratio of a very rare FCNC decay K^{+} -> pi^{+} nu anti-nu with better than 10% precision. The branching ratio is precisely known in the Standard Model. The most recent theoretical calculation provides about 10% accuracy. Therefore, this decay is very sensitive to possible new physics phenomena, which can alter its branching ratio. The NA62 was able to reach the Standard Model sensitivity region for the interesting decay by analyzing data collected in 2016. This preliminary result is presented in the current work. The theory framework and the NA62 detector are also reviewed."