Study of the B -> X(3872)(-> D*(0)(D)over-bar(0)K decay

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题名:	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
贡献者:	物理學系
日期:	2010
上传时间:	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
显示于类别:	[物理學系] 期刊論文

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