Observation of B+-> p Lambda pi(+)pi(-) at Belle

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題名:	Observation of B+-> p Lambda pi(+)pi(-) at Belle
作者:	Chen,P;Wang,MZ;Aihara,H;Bakich,AM;Balagura,V;Bhardwaj,V;Bischofberger,M;Bozek,A;Bracko,M;Browder,TE;Chang,MC;Chang,P;Chen,A;Cheon,BG;Cho,IS;Choi,Y;Dalseno,J;Danilov,M;Dash,M;Eidelman,S;Gabyshev,N;Goldenzweig,P;Golob,B;Han,BY;Hara,T;Hayashii,H;Hoshi,Y;Hou,WS;Hyun,HJ;Iijima,T;Inami,K;Itoh,R;Iwasaki,Y;Kang,JH;Katayama,N;Kawai,H;Kichimi,H;Kim,HJ;Kim,HO;Kim,YI;Kim,YJ;Ko,BR;Korpar,S;Krizan,P;Krokovny,P;Kwon,YJ;Kyeong,SH;Lee,MJ;Lee,SH;Liu,C;Liu,Y;Liventsev,D;Louvot,R;Matyja,A;McOnie,S;Miyata,H;Miyazaki,Y;Mizuk,R;Nakano,E;Nakao,M;Nishida,S;Ogawa,S;Ohshima,T;Okuno,S;Pakhlova,G;Park,CW;Park,HK;Peak,LS;Pestotnik,R;Peters,M;Petric,M;Piilonen,LE;Poluektov,A;Reisert,B;Sahoo,H;Sakai,Y;Schneider,O;Senyo,K;Sevior,ME;Shapkin,M;Shebalin,V;Shen,CP;Shiu,JG;Simon,F;Smerkol,P;Sokolov,A;Solovieva,E;Staric,M;Sumiyoshi,T;Teramoto,Y;Trabelsi,K;Tsuboyama,T;Unno,Y;Uno,S;Urquijo,P;Varner,G;Varvell,KE;Vinokurova,A;Wang,CH;Wang,P;Watanabe,Y;Wedd,R;Wei,JT;Won,E;Yabsley,BD;Yamashita,Y;Yuan,CZ;Zhang,ZP;Zhilich,V;Zhulanov,V;Zivko,T;Zupanc,A
貢獻者:	物理研究所
關鍵詞:	BARYONIC B-DECAYS
日期:	2009
上傳時間:	2010-07-08 14:00:27 (UTC+8)
出版者:	中央大學
摘要:	We study charmless B+ meson decays to the p Lambda pi(+)pi(-) final state using a 605 fb(-1) data sample collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. There are significant signals found with the p Lambda mass peaking near threshold. The observed branching fraction for nonresonant B+-> p Lambda pi(+)pi(-) is (5.92(-0.84)(+0.88)(stat)+/- 0.69(syst))x10(-6) with a significance of 9.1 standard deviations. We also observe the intermediate three-body decay B+-> p Lambda rho(0) with a branching fraction of (4.78(-0.64)(+0.67)(stat)+/- 0.60(syst))x10(-6) and a significance of 9.5 standard deviations, and find a hint of a B+-> p Lambda f(2)(1270) signal. No other intermediate three-body decay is found in this study.
關聯:	PHYSICAL REVIEW D
顯示於類別:	[物理研究所] 期刊論文

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