Search for a Low Mass Particle Decaying into mu(+)mu(-) in B(0)-> K*(0)X and B(0)->rho(0)X at Belle

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題名:	Search for a Low Mass Particle Decaying into mu(+)mu(-) in B(0)-> K*(0)X and B(0)->rho(0)X at Belle
作者:	Hyun,HJ;Park,HK;Kim,HO;Park,H;Aihara,H;Arinstein,K;Aushev,T;Bakich,AM;Barberio,E;Bay,A;Belous,K;Bischofberger,M;Bondar,A;Bozek,A;Bracko,M;Chang,MC;Chang,P;Chao,Y;Chen,A;Chen,P;Cheon,BG;Cho,IS;Choi,Y;Dalseno,J;Danilov,M;Dash,M;Drutskoy,A;Eidelman,S;Gabyshev,N;Golob,B;Ha,H;Hara,T;Horii,Y;Hoshi,Y;Hou,WS;Hsiung,YB;Inami,K;Iwasaki,Y;Joshi,NJ;Kah,DH;Kang,JH;Kapusta,P;Kawasaki,T;Kichimi,H;Kiesling,C;Kim,HJ;Kim,JH;Kim,MJ;Ko,BR;Kodys,P;Krizan,P;Kuzmin,A;Kwon,YJ;Kyeong,SH;Lange,JS;Lee,SH;Li,J;Liventsev,D;Louvot,R;Matyja,A;McOnie,S;Miyabayashi,K;Miyata,H;Miyazaki,Y;Mohanty,GB;Nakano,E;Nakazawa,H;Nishida,S;Nishimura,K;Nitoh,O;Ohshima,T;Okuno,S;Olsen,SL;Palka,H;Park,CW;Pestotnik,R;Petric,M;Piilonen,LE;Ryu,S;Sahoo,H;Sakai,Y;Schneider,O;Sevior,ME;Shapkin,M;Shiu,JG;Shwartz,B;Singh,JB;Stanic,S;Staric,M;Sumiyoshi,T;Suzuki,S;Teramoto,Y;Trabelsi,K;Uehara,S;Unno,Y;Uno,S;Varner,G;Varvell,KE;Vervink,K;Wang,CH;Wang,MZ;Wang,P;Wang,XL;Wedd,R;Won,E;Yabsley,BD;Yamashita,Y;Zhang,ZP;Zhilich,V;Zyukova,O
貢獻者:	物理學系
關鍵詞:	CONSTRAINTS;GRAVITINO;ENERGIES;BOSON
日期:	2010
上傳時間:	2012-06-11 10:46:26 (UTC+8)
出版者:	國立中央大學
摘要:	We search for dimuon decays of a low mass particle in the decays B(0) -> K(0)X and B(0) -> rho(0)X using a data sample of 657 x 10(6)B (B) over bar events collected with the Belle detector at the KEKB asymmetric- energy e(+)e(-) collider. We find no evidence for such a particle in the mass range from 212 MeV/c(2) to 300 MeV/c(2) for lifetimes below 10(-12) s, and set upper limits on its branching fractions. In particular, we search for a particle with a mass of 214: 3 MeV/c(2) reported by the HyperCP experiment, and obtain upper limits on the products B(B(0) -> K(0)X) x B(X mu(+)mu(-)) < 2.26(2.27) x 10(-8) and B(B(0) -> rho(0)X) x B(X -> mu(+)mu(-)) < 1.73(1.73) x 10(-8) at 90% C.L. for a scalar (vector) X particle.
關聯:	PHYSICAL REVIEW LETTERS
顯示於類別:	[物理學系] 期刊論文

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