Abstract
Three events for the decay K+→π+νν̄ have been observed in the pion momentum region below the K+→π+π0 peak, 140<Pπ<199MeV/c, with an estimated background of 0.93±0.17(stat. )-0.24+0.32(syst.) events. Combining this observation with previously reported results yields a branching ratio of B(K+→π+νν̄)=(1.73-1.05+1. 15)×10-10 consistent with the standard model prediction.
Original language | English |
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Article number | 191802 |
Journal | Physical Review Letters |
Volume | 101 |
Issue number | 19 |
DOIs | |
Publication status | Published - 2008 Nov 7 |