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    题名: Precise measurement of hadronic tau-decays with an eta meson
    作者: Inami,K;Ohshima,T;Kaji,H;Adachi,I;Aihara,H;Arinstein,K;Aulchenko,V;Aushev,T;Bedny,I;Bhardwaj,V;Bondar,A;Bracko,M;Browder,TE;Chang,MC;Chao,Y;Chistov,R;Cho,IS;Choi,Y;Dalseno,J;Dash,M;Eidelman,S;Epifanov,D;Gabyshev,N;Golob,B;Haba,J;Hara,K;Hayasaka,K;Hayashii,H;Heffernan,D;Hoshi,Y;Hou,WS;Hyun,HJ;Iijima,T;Ishikawa,A;Iwasaki,Y;Kah,DH;Kang,JH;Kawasaki,T;Kichimi,H;Kim,HO;Kim,SK;Kim,YI;Kim,YJ;Krokovny,R;Kumar,R;Kuzmin,A;Kwon,YJ;Kyeong,SH;Lange,JS;Lee,JS;Lee,MJ;Lee,SE;Limosani,A;Lin,SW;Louvot,R;Mandl,F;McOnie,S;Medvedeva,T;Miyabayashi,K;Miyata,H;Miyazaki,Y;Mizuk,R;Nakano,E;Nakao,M;Nakazawa,H;Nitoh,O;Noguchi,S;Ogawa,S;Okuno,S;Ozaki,H;Pakhlov,P;Pakhlova,G;Park,CW;Park,H;Park,HK;Park,KS;Peak,LS;Piilonen,LE;Poluektov,A;Sakai,Y;Schneider,O;Shapkin,M;Shebalin,V;Shiu,JG;Shwartz,B;Singh,JB;Stanic,S;Staric,M;Sumiyoshi,T;Tanaka,M;Taylor,GN;Teramoto,Y;Uehara,S;Uglov,T;Uno,S;Usov,Y;Usuki,Y;Varner,G;Vinokurova,A;Wang,CH;Wang,P;Wang,XL;Watanabe,Y;Wedd,R;Won,E;Yamashita,Y;Zhang,ZP;Zhilich,V;Zhulanov,V;Zivko,T;Zupanc,A;Zyukova,O
    贡献者: 物理研究所
    关键词: 1ST OBSERVATION;BELLE;IDENTIFICATION;DETECTOR;KEKB
    日期: 2009
    上传时间: 2010-07-08 14:00:40 (UTC+8)
    出版者: 中央大學
    摘要: We have studied hadronic tau decay modes involving an eta meson using 490 fb(-1) of data collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The following branching fractions have been measured B(tau(-) -> K-eta nu(tau)) = (1.58 +/- 0.05 +/- 0.09) x 10(-4), B(tau(-) -> K-pi(0)eta nu(tau)) = (4.6 +/- 1.1 +/- 0.4) x 10(-5), B(tau(-) -> pi(-)pi(0)eta nu(tau)) = 1.35 +/- 0.03 +/- 0.07)x10(-3), B(tau(-)-> pi K--(S)0 eta nu(tau)) = 4.4 +/- 0.7 +/- 0.2) x 10(-5) and B(tau(-) -> K*(-) eta nu(tau)) = (1.34 +/- 0.12 +/- 0.09) x 10(-4). These result are substantially more precise than previous measurements. The new measurements are compared with theoretical calculations based on the CVC hypothesis or the chiral pertubation theory. We also set upper limits on branching fractions for tau decays into (K-KS0)eta nu(tau), pi K--(S)0 pi(0)eta nu(tau), K-eta eta nu(tau), pi(-)eta eta nu(tau) and non-resonant K-pi(0)eta nu(tau) final states (C) 2009 Published by Elseiver B.V.
    關聯: PHYSICS LETTERS B
    显示于类别:[物理研究所] 期刊論文

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