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| 題名: | Study of the B -> X(3872)(-> D*(0)(D)over-bar(0)K decay |
| 作者: | Aushev,T;Zwahlen,N;Adachi,I;Aihara,H;Bakich,AM;Balagura,V;Bay,A;Belous,K;Bhardwaj,V;Bischofberger,M;Bondar,A;Bozek,A;Brodzicka,J;Browder,TE;Chao,Y;Chen,A;Chen,P;Cheon,BG;Chiang,CC;Chistov,R;Cho,IS;Choi,SK;Choi,Y;Dalseno,J;Danilov,M;Drutskoy,A;Eidelman,S;Gabyshev,N;Goldenzweig,P;Ha,H;Haba,J;Han,BY;Hayashii,H;Hoshi,Y;Hou,WS;Hyun,HJ;Iijima,T;Inami,K;Itoh,R;Iwabuchi,M;Iwasaki,M;Iwasaki,Y;Joshi,NJ;Julius,T;Kah,DH;Kang,JH;Kapusta,P;Kawasaki,T;Kim,HJ;Kim,HO;Kim,JH;Kim,YI;Kim,YJ;Ko,BR;Korpar,S;Krizan,P;Krokovny,P;Kuhr,T;Kumar,R;Kwon,YJ;Lange,JS;Lee,SH;Li,J;Liu,C;Liventsev,D;Louvot,R;Matyja,A;McOnie,S;Medvedeva,T;Miyabayashi,K;Miyata,H;Miyazaki,Y;Mizuk,R;Nakano,E;Nakao,M;Natkaniec,Z;Nishida,S;Nishimura,K;Nitoh,O;Ogawa,S;Ohshima,T;Okuno,S;Olsen,SL;Pakhlov,P;Pakhlova,G;Palka,H;Park,CW;Park,H;Park,HK;Pestotnik,R;Petric,M;Piilonen,LE;Ryu,S;Sahoo,H;Sakai,K;Sakai,Y;Schneider,O;Schwanda,C;Senyo,K;Shapkin,M;Shen,CP;Shiu,JG;Shwartz,B;Singh,JB;Smerkol,P;Sokolov,A;Solovieva,E;Staric,M;Sumiyoshi,T;Teramoto,Y;Tikhomirov,I;Trabelsi,K;Uehara,S;Uglov,T;Unno,Y;Uno,S;Usov,Y;Varner,G;Vervink,K;Wang,CH;Wang,P;Watanabe,Y;Wedd,R;Wicht,J;Won,E;Yabsley,BD;Yamashita,Y;Yamauchi,M;Yuan,CZ;Zhang,ZP;Zhulanov,V;Zivko,T;Zupanc,A;Zyukova,O |
| 貢獻者: | 物理學系 |
| 日期: | 2010 |
| 上傳時間: | 2012-06-11 10:47:06 (UTC+8) |
| 出版者: | 國立中央大學 |
| 摘要: | We present a study of B -> X(3872)K with X(3872) decaying to D*(0)(D) over bar (0) using a sample of 657 x 10(6) B (B) over bar pairs recorded at the Gamma(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. Both D*(0) -> D(0)gamma and D*(0) -> D(0)pi(0) decay modes are used. We find a peak of 50.1(-11.1)(+14.8) events with a mass of (3872.9(-0.4-0.5)(+0.6+0.4)) MeV/c(2), a width of d 3.9(-1.4-1.1)(+2.8+0.2)) MeV/c(2) and a product branching fraction B(B -> X(3872)K) X B(X(3872) -> D*(0)(D) over bar (0)) = (0.80 +/- 0.20 +/- 0.10) X 10(-4), where the first errors are statistical and the second ones are systematic. The significance of the signal is 6.4 sigma. The difference between the fitted mass and the D*(0)(D) over bar (0) threshold is calculated to be (1.1(-0.4-0.3)(+0.6+0.1)) MeV/c(2). We also obtain an upper limit on the product of branching fractions B(B -> Y(3940)K) X B(Y(3940) -> D*(0)(D) over bar (0) of 0.67 X 10(-4) at 90% CL. |
| 關聯: | PHYSICAL REVIEW D |
| 顯示於類別: | [物理學系] 期刊論文
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