Measurement of the Branching Ratio
✍
Toshio Numao
📂
Article
📅
2009
🏛
Elsevier Science
🌐
English
⚖ 306 KB
Three new events of the decay K + → π + νν have been observed in the pion momentum region 140 < P π < 199 MeV/c with an estimated background of 0.93 ± 0.17(stat) +0.32 -0.24 (syst) events. Combining this observation with the previously reported results yields a branching ratio of BR(K + → π + νν) =