Study of the decay K^+→π^+ν ν^^- in momentum region 140 < P_π < 199MeV/c

• 資料種別: 文書・図像類
• タイトル: Study of the decay K^+→π^+ν ν^^- in momentum region 140 < P_π < 199MeV/c
• 著者・編者: ARTAMONOV, A.V; BASSALECK, B; BHUYAN, B; BLACKMORE, E.W; BRYMAN, D.A; CHEN, S; CHIANG, I.-H; CHRISTIDI, I.-A; COOPER, P.S; DIWAN, M.V; FRANK, J.S; FUJIWARA, T; HU, J; IVES, J; JAFFE, D.E; KABE, S; KETTELL, S.H; KHABIBULLIN, M.M; KHOTJANTSEV, A.N; KITCHING, P; KOBAYASHI, M; KOMATSUBARA, T.K; KONAKA, A; KOZHEVNIKOV, A.P; KUDENKO, Yu.G; KUSHNIRENKO, A; LANDSBERG, L.G; LEWIS, B; LI, K.K; LITTENBERG, L.S; MACDONALD, J.A; MILDENBERGER, J; MINEEV, O.V; MIYAJIMA, M; MIZOUCHI, K; MUKHIN, V.A; MURAMATSU, N; NAKANO, T; NOMACHI, M; NOMURA, T; NUMAO, T; OBRAZTSOV, V.F; OMATA, K; PATALAKHA, D.I; PETRENKO, S.V; POUTISSOU, R; RAMBERG, E.J; REDLINGER, G; SATO, T; SEKIGUCHI, T; SHINKAWA, T; STRAND, R.C; SUGIMOTO, S; TAMAGAWA, Y; TSCHIRHART, R; TSUNEMI, T; VAVILOV, D.V; VIREN, B; WANG, Zhe; YERSHOV, N.V; YOSHIMURA, Y; YOSHIOKA, T
• 著者標目: ARTAMONOV, A.V; BASSALECK, B; BHUYAN, B; BLACKMORE, E.W; BRYMAN, D.A; CHEN, S; CHIANG, I.-H; CHRISTIDI, I.-A; COOPER, P.S; DIWAN, M.V; FRANK, J.S; FUJIWARA, T; HU, J; IVES, J; JAFFE, D.E; KABE, S; KETTELL, S.H; KHABIBULLIN, M.M; KHOTJANTSEV, A.N; KITCHING, P; KOBAYASHI, M; KOMATSUBARA, T.K; KONAKA, A; KOZHEVNIKOV, A.P; KUDENKO, Yu.G; KUSHNIRENKO, A; LANDSBERG, L.G; LEWIS, B; LI, K.K; LITTENBERG, L.S; MACDONALD, J.A; MILDENBERGER, J; MINEEV, O.V; MIYAJIMA, M; MIZOUCHI, K; MUKHIN, V.A; MURAMATSU, N; NAKANO, T; NOMACHI, M; NOMURA, T; NUMAO, T; OBRAZTSOV, V.F; OMATA, K; PATALAKHA, D.I; PETRENKO, S.V; POUTISSOU, R; RAMBERG, E.J; REDLINGER, G; SATO, T; SEKIGUCHI, T; SHINKAWA, T; STRAND, R.C; SUGIMOTO, S; TAMAGAWA, Y; TSCHIRHART, R; TSUNEMI, T; VAVILOV, D.V; VIREN, B; WANG, Zhe; YERSHOV, N.V; YOSHIMURA, Y; YOSHIOKA, T
• 出版事項: American Physical Society
• 出版年月日等: 2009
• 出版年（W3CDTF）: 2009
• タイトル（掲載誌）: Physical Review D
• 巻号年月日等（掲載誌）: 79 9
• 掲載巻: 79
• 掲載号: 9
• 掲載ページ: 092004-1-092004-27
• ISSN（掲載誌）: ISSN : 1550-7998
• 本文の言語コード: eng
• 件名標目: K-on rare decay
• 対象利用者: 一般
• 一般注記: Experiment E949 at Brookhaven National Laboratory has observed three new events consistent with the decay K^+ → π^+ VV^^- in the pion momentum region 140<P_π < 199 MeV/c in an exposure of 1.71 × 10^<12> stopped kaons with an estimated total background of 0.93 ± 0.17(stat)^<+0.32>_<-0.24>(syst) events. This brings the total number of observed K^+ → π^+ vv^^- events to seven. Combining this observation with previous results, assuming the pion spectrum predicted by the standard model, results in a branching ratio of B(K^+ → π^+ vv^^-)=(1.73^<+1.15>_<-1.05>) ×10^<-10>. An interpretation of the results for alternative models of the decay K^+ → π^+ +nothing is also presented.
• オンライン閲覧公開範囲: 限定公開
• 著作権情報: American Physical Society
• 関連情報（DOI）: 10.1103/PhysRevD.79.092004
• 連携機関・データベース: 国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）; https://irdb.nii.ac.jp
• 提供元機関・データベース: 福井大学 : 福井大学学術機関リポジトリ