Measurements of charmless hadronic b -> s penguin decays in the pi(+)pi K--(+)pi(-) final state and first observation of B-0 -> rho K-0(+)pi(-)

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題名:	Measurements of charmless hadronic b -> s penguin decays in the pi(+)pi K--(+)pi(-) final state and first observation of B-0 -> rho K-0(+)pi(-)
作者:	Kyeong,SH;Kwon,YJ;Adachi,I;Aihara,H;Bakich,AM;Balagura,V;Barberio,E;Bay,A;Belous,K;Bischofberger,M;Bozek,A;Bracko,M;Browder,TE;Chang,MC;Chao,Y;Chen,A;Cheon,BG;Chiang,CC;Cho,IS;Choi,Y;Dalseno,J;Das,A;Drutskoy,A;Dungel,W;Eidelman,S;Gabyshev,N;Goldenzweig,P;Ha,H;Haba,J;Han,BY;Hara,T;Hasegawa,Y;Hayasaka,K;Hayashii,H;Hoshi,Y;Hyun,HJ;Inami,K;Ishikawa,A;Itoh,R;Iwasaki,M;Joshi,NJ;Kah,DH;Kang,JH;Kapusta,P;Katayama,N;Kawasaki,T;Kim,HO;Kim,JH;Kim,YI;Kim,YJ;Kinoshita,K;Ko,BR;Korpar,S;Krizan,P;Kumar,R;Lee,MJ;Lesiak,T;Li,J;Liu,C;Liu,Y;Louvot,R;Matyja,A;McOnie,S;Miyabayashi,K;Miyata,H;Miyazaki,Y;Mizuk,R;Nagasaka,Y;Nakano,E;Nakao,M;Natkaniec,Z;Nishida,S;Nishimura,K;Nitoh,O;Ogawa,S;Ohshima,T;Okuno,S;Ozaki,H;Pakhlov,P;Pakhlova,G;Park,CW;Park,H;Park,HK;Pestotnik,R;Piilonen,LE;Sahoo,H;Sakai,K;Sakai,Y;Schneider,O;Schumann,J;Schwanda,C;Schwartz,AJ;Sekiya,A;Senyo,K;Sevior,ME;Shapkin,M;Shen,CP;Shiu,JG;Shwartz,B;Singh,JB;Sinha,R;Sokolov,A;Stanic,S;Staric,M;Stypula,J;Sumisawa,K;Sumiyoshi,T;Taylor,GN;Teramoto,Y;Trabelsi,K;Uehara,S;Unno,Y;Urquijo,P;Varner,G;Varvell,KE;Vervink,K;Vinokurova,A;Wang,CH;Wang,MZ;Wang,P;Watanabe,Y;Wedd,R;Won,E;Yabsley,BD;Yamashita,Y;Zhang,ZP;Zhilich,V;Zhulanov,V;Zivko,T;Zupanc,A;Zyukova,O
貢獻者:	物理研究所
關鍵詞:	CP-VIOLATION;BELLE;POLARIZATION;DETECTOR;PHYSICS
日期:	2009
上傳時間:	2010-07-08 14:00:21 (UTC+8)
出版者:	中央大學
摘要:	We report measurements of charmless hadronic B-0 decays into the pi(+)pi K--(+)pi(-) final state. The analysis uses a sample of 657 x 10(6) B (B) over bar pairs collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider at the resonance. The decay B-0 -> rho K-0(+)pi(-) is observed for the first time; the significance is 5.0 sigma and the corresponding partial branching fraction for M-K pi is an element of (0.75, 1.20) GeV/c(2) is [2.8 +/- 0.5(stat) +/- 0.5(syst)] x 10(-6). We also obtain the first evidence for B-0 -> f(0)(980)K+pi(-) with 3.5 sigma significance and for B-0 -> pi(+)pi K-(0) with 4.5 sigma significance. For the two-body decays B-0 -> rho K-0(0) and B-0 -> f(0)(980)K*(0), the significance are 2.7 sigma and 2.5 sigma, respectively, and the upper limits on the branching fractions are 3.4 x 10(-6) and 2.2 x 10(-6) at 90% confidence level.
關聯:	PHYSICAL REVIEW D
顯示於類別:	[物理研究所] 期刊論文

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