The decay K+ → π+vv, with a very precisely predicted branching ratio ofless than 10-10, is one of the best candidates to reveal indirect effects of newphysics at the highest mass scales. The NA62 experiment at CERN SPS isdesigned to measure the branching ratio of the K+ → π+vv with a decay-inflight technique, novel for this channel. NA62 took data in 2016, 2017 and 2018.Statistics collected in 2016 allows NA62 to reach the Standard Model sensitivityfor K+ → π+vv, entering the domain of 10-10 single event sensitivity andshowing the proof of principle of the experiment. The preliminary result onK+ → π+vv from the analysis of the 2016 data set is described.
Aliberti, R., Ambrosino, F., Ammendola, R., Angelucci, B., Antonelli, A., Anzivino, G., et al. (2018). K+ → π+vv: First results from the NA62 experiment at CERN. In 17th Vulcano Workshop: Frontier Objects in Astrophysics and Particle Physics 2018 (pp.345-360). Istituto Nazionale di Fisica Nucleare.
K+ → π+vv: First results from the NA62 experiment at CERN
R. Ammendola;V. Bonaiuto;F. Sargeni;
2018-01-01
Abstract
The decay K+ → π+vv, with a very precisely predicted branching ratio ofless than 10-10, is one of the best candidates to reveal indirect effects of newphysics at the highest mass scales. The NA62 experiment at CERN SPS isdesigned to measure the branching ratio of the K+ → π+vv with a decay-inflight technique, novel for this channel. NA62 took data in 2016, 2017 and 2018.Statistics collected in 2016 allows NA62 to reach the Standard Model sensitivityfor K+ → π+vv, entering the domain of 10-10 single event sensitivity andshowing the proof of principle of the experiment. The preliminary result onK+ → π+vv from the analysis of the 2016 data set is described.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.