Study of the decay K+ => pi+,nu,nubar in the momentum region 140<Ppi<199 MeV/c

E949 Collaboration, A. V. Artamonov, B. Bassalleck +60

Experiment E949 at Brookhaven National Laboratory has observed three new events consistent with the decay K+ => pi+,nu,nubar in the pion momentum region 140 < P_pi < 199 MeV/c in a…