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    题名: Evidence for B -> K eta 'gamma decays at Belle
    作者: Wedd,R;Adachi,I;Aihara,H;Arinstein,K;Aulchenko,V;Bakich,AM;Balagura,V;Barberio,E;Bay,A;Belous,K;Bhardwaj,V;Bischofberger,M;Bondar,A;Bozek,A;Bracko,M;Browder,TE;Chao,Y;Chen,A;Cheon,BG;Cho,IS;Choi,Y;Dalseno,J;Dash,M;Drutskoy,A;Eidelman,S;Epifanov,D;Gabyshev,N;Goldenzweig,P;Ha,H;Horii,Y;Hoshi,Y;Hou,WS;Hyun,HJ;Iijima,T;Inami,K;Ishikawa,A;Itoh,R;Iwasaki,M;Kah,DH;Katayama,N;Kawai,H;Kawasaki,T;Kim,HO;Kim,JH;Kim,YI;Kim,YJ;Kinoshita,K;Ko,BR;Krizan,P;Krokovny,P;Kuhr,T;Kumar,R;Kuzmin,A;Kwon,YJ;Kyeong,SH;Lee,MJ;Lee,SH;Lesiak,T;Li,J;Limosani,A;Liu,C;Liventsev,D;Louvot,R;Matyja,A;McOnie,S;Miyata,H;Mizuk,R;Mori,T;Nagasaka,Y;Nakao,M;Nakazawa,H;Natkaniec,Z;Nishida,S;Nitoh,O;Ohshima,T;Okuno,S;Ozaki,H;Pakhlov,P;Pakhlova,G;Park,CW;Park,HK;Park,KS;Pestotnik,R;Piilonen,LE;Poluektov,A;Sahoo,H;Sakai,Y;Schneider,O;Schumann,J;Senyo,K;Sevior,ME;Shapkin,M;Shebalin,V;Shiu,JG;Shwartz,B;Singh,JB;Sokolov,A;Stanic,S;Staric,M;Sumisawa,K;Sumiyoshi,T;Suzuki,S;Taylor,GN;Teramoto,Y;Trabelsi,K;Uehara,S;Unno,Y;Uno,S;Urquijo,P;Usov,Y;Varner,G;Varvell,KE;Vervink,K;Vinokurova,A;Wang,CH;Wang,MZ;Wang,P;Watanabe,Y;Wicht,J;Won,E;Yabsley,BD;Yamamoto,H;Yamashita,Y;Zhang,ZP;Zhilich,V;Zhulanov,V;Zivko,T;Zupanc,A;Zyukova,O
    贡献者: 物理學系
    关键词: HIGH-ENERGY-PHYSICS;CP VIOLATION;ETA;DETECTOR
    日期: 2010
    上传时间: 2012-06-11 10:42:34 (UTC+8)
    出版者: 國立中央大學
    摘要: We present the results of a search for the radiative decay B -> K eta 'gamma and find evidence for B(+) -> K(+)eta 'gamma decays at the 3.3 standard deviation level with a partial branching fraction of (3.6 +/- 1.2 +/- 0.4) x 10(-6), where the first error is statistical and the second systematic. This measurement is restricted to the region of combined K eta ' invariant mass less than 3.4 GeV/c(2). A 90% confidence level upper limit of 6.4 x 10(-6) is obtained for the partial branching fraction of the decay B(0) -> K(0)eta 'gamma in the same K eta ' invariant mass region. These results are obtained from a 605 fb(-1) data sample containing 657 x 10(6) B (B) over bar pairs collected at the Y(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider.
    關聯: PHYSICAL REVIEW D
    显示于类别:[物理學系] 期刊論文

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