Search for B(s)(0) -> hh decays at the Y(5S) resonance

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题名:	Search for B(s)(0) -> hh decays at the Y(5S) resonance
作者:	Peng,CC;Chang,P;Adachi,I;Aihara,H;Aushev,T;Aziz,T;Bakich,AM;Balagura,V;Barberio,E;Belous,K;Bhardwaj,V;Bondar,A;Bozek,A;Bracko,M;Browder,TE;Chang,MC;Chao,Y;Chen,A;Chen,KF;Chen,P;Cheon,BG;Chiang,CC;Chistov,R;Cho,IS;Choi,Y;Dalseno,J;Danilov,M;Das,A;Dash,M;Drutskoy,A;Dungel,W;Eidelman,S;Gabyshev,N;Goldenzweig,P;Golob,B;Ha,H;Haba,J;Hayashii,H;Horii,Y;Hoshi,Y;Hou,WS;Hyun,HJ;Iijima,T;Inami,K;Itoh,R;Iwabuchi,M;Iwasaki,M;Iwasaki,Y;Joshi,NJ;Julius,T;Kang,JH;Kawasaki,T;Kim,HJ;Kim,HO;Kim,JH;Kim,MJ;Kim,SK;Kim,YJ;Kinoshita,K;Ko,BR;Kodys,P;Korpar,S;Krizan,P;Krokovny,P;Kuhr,T;Kwon,YJ;Kyeong,SH;Lee,MJ;Lee,SH;Li,J;Limosani,A;Liu,C;Liventsev,D;Louvot,R;Matyja,A;McOnie,S;Miyabayashi,K;Miyata,H;Mizuk,R;Mohanty,GB;Nakao,M;Nakazawa,H;Natkaniec,Z;Neubauer,S;Nishida,S;Nishimura,K;Nitoh,O;Ogawa,S;Ohshima,T;Okuno,S;Olsen,SL;Pakhlova,G;Park,CW;Park,H;Park,HK;Pestotnik,R;Petric,M;Piilonen,LE;Rohrken,M;Ryu,S;Sakai,Y;Schneider,O;Schwanda,C;Schwartz,AJ;Senyo,K;Sevior,ME;Shapkin,M;Shen,CP;Shiu,JG;Shwartz,B;Smerkol,P;Sokolov,A;Staric,M;Sumisawa,K;Sumiyoshi,T;Tanaka,M;Taylor,GN;Teramoto,Y;Trabelsi,K;Uehara,S;Unno,Y;Uno,S;Varner,G;Varvell,KE;Vervink,K;Wang,CH;Wang,P;Watanabe,M;Watanabe,Y;Wedd,R;Wicht,J;Won,E;Yabsley,BD;Yamashita,Y;Yuan,CZ;Zhang,CC;Zhang,ZP;Zhilich,V;Zhulanov,V;Zivko,T;Zyukova,O
贡献者:	物理學系
关键词:	VIOLATION;PHYSICS;GAMMA
日期:	2010
上传时间:	2012-06-11 10:46:29 (UTC+8)
出版者:	國立中央大學
摘要:	We have searched for B(s)(0) --> hh decays, where h stands for a charged or neutral kaon, or a charged pion. These results are based on a 23: 6 fb(-1) data sample collected with the Belle detector on the Y(5S) resonance at the KEKB asymmetric-energy e(+)e(-) collider, containing 1.25 x 10(6) B(s)(()())(B) over bar (()(s)()) events. We observe the decay B(s)(0) --> K(+)K(-) and measure its branching fraction, B(B(s)(0) --> K(+)K(-)) = [3.8(-0.9)(+1.0)(stat) +/- 0.5(syst) +/- 0.5(f(s))] x 10(-5). The first error is statistical, the second is systematic, and the third error is due to the uncertainty in the B(s)(0) production fraction in e(+)e(-) --> b (b) over bar events. No significant signals are seen in other decay modes, and we set upper limits at the 90% confidence level: B(B(s)(0) --> K(-) pi+) < 1.2 x 10(-5), B(B(s)(0) --> pi(+)pi(-)) < 2.6 x 10(-5), and B(B(s)(0) --> K(0)(K) over bar (0)) < 6.6 x 10(-5).
關聯:	PHYSICAL REVIEW D
显示于类别:	[物理學系] 期刊論文

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