Artamonov, AV; Bassalleck, B; Bhuyan, B; Blackmore, EW; Bryman, DA; Chen, S; Chiang, IH; ... E949 Collaboration, .; + view all Artamonov, AV; Bassalleck, B; Bhuyan, B; Blackmore, EW; Bryman, DA; Chen, S; Chiang, IH; Christidi, IA; Cooper, PS; Diwan, MV; Frank, JS; Fujiwara, T; Hu, J; Ives, J; Jaffe, DE; Kabe, S; Kettell, SH; Khabibullin, MM; Khotjantsev, AN; Kitching, P; Kobayashi, M; Komatsubara, TK; Konaka, A; Kozhevnikov, AP; Kudenko, YG; Kushnirenko, A; Landsberg, LG; Lewis, B; Li, KK; Littenberg, LS; Macdonald, JA; Mildenberger, J; Mineev, OV; Miyajima, M; Mizouchi, K; Mukhin, VA; Muramatsu, N; Nakano, T; Nomachi, M; Nomura, T; Numao, T; Obraztsov, VF; Omata, K; Patalakha, DI; Petrenko, SV; Poutissou, R; Ramberg, EJ; Redlinger, G; Sato, T; Sekiguchi, T; Shinkawa, T; Strand, RC; Sugimoto, S; Tamagawa, Y; Tschirhart, R; Tsunemi, T; Vavilov, DV; Viren, B; Wang, Z; Yershov, NV; Yoshimura, Y; Yoshioka, T; E949 Collaboration, .; - view fewer (2008) New Measurement of the K+->pi(+)nu nu Branching Ratio. PHYS REV LETT , 101 (19) , Article 191802. 10.1103/PhysRevLett.101.191802.

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Abstract

Three events for the decay K+->pi(+)nu have been observed in the pion momentum region below the K+->pi(+)pi(0) peak, 140 < P-pi < 199 MeV/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+->pi(+)nu nu)=(1.73(-1.05)(+1.15))x10(-10) consistent with the standard model prediction.

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