Data di Pubblicazione:
2010
Abstract:
We present measurements of the charmonium state h(c) (P-1(1)) made with 106 x 10(6) psi' events collected by BESIII at BEPCII. Clear signals are observed for psi' -> pi(0)h(c) with and without the subsequent radiative decay h(c) -> gamma eta(c). First measurements of the absolute branching ratios B(psi' -> pi(0)h(c)) = (8.4 +/- 1.3 +/- 1.0 x 10(-4) and B(h(c) -> gamma eta(c)) = (54.3 +/- 6.7 +/- 5.2)% are presented. A statistics-limited determination of the previously unmeasured h(c) width leads to an upper limit Gamma(h(c)) < 1.44 MeV (90% confidence). Measurements of M(h(c)) = 3525.40 +/- 0.13 +/- 0.18 MeV/c(2) and B(psi' -> pi(0)h(c)) x B(h(c) -> gamma eta(c)) = (4.58 +/- 0.40 +/- 0.50) x 10(-4) are consistent with previous results.
Tipologia CRIS:
03A-Articolo su Rivista
Keywords:
14.40.Pq; 12.38.Qk; 13.25.Gv
Elenco autori:
Ablikim M;
Achasov MN;
An L;
An Q;
An ZH;
Bai JZ;
Ban Y;
Berger N;
Bian JM;
Boyko I;
Briere RA;
Bytev V;
Cai X;
Cao GF;
Cao XX;
Chang JF;
Chelkov G;
Chen G;
Chen HS;
Chen JC;
Chen LP;
Chen ML;
Chen P;
Chen SJ;
Chen YB;
Chu YP;
Cronin-Hennessy D;
Dai HL;
Dai JP;
Dedovich D;
Deng ZY;
Denysenko I;
Destefanis M;
Ding Y;
Dong LY;
Dong MY;
Du SX;
Duan MY;
Fang J;
Feng CQ;
Fu CD;
Fu JL;
Gao Y;
Geng C;
Goetzen K;
Gong WX;
Greco M;
Grishin S;
Gu YT;
Guo AQ;
Guo LB;
Guo YP;
Han SQ;
Harris FA;
He KL;
He M;
He ZY;
Heng YK;
Hou ZL;
Hu HM;
Hu JF;
Hu T;
Hu XW;
Huang B;
Huang GM;
Huang JS;
Huang XT;
Huang YP;
Ji CS;
Ji Q;
Ji XB;
Ji XL;
Jia LK;
Jiang LL;
Jiang XS;
Jiao JB;
Jin DP;
Jin S;
Komamiya S;
Kuehn W;
Lange S;
Leung JKC;
Li C;
Li C;
Li DM;
Li F;
Li G;
Li HB;
Li J;
Li JC;
Li L;
Li L;
Li QJ;
Li WD;
Li WG;
Li XL;
Li XN;
Li XQ;
Li XR;
Li YX;
Li ZB;
Liang H;
Liang TR;
Liang YT;
Liang YF;
Liao GR;
Liao XT;
Liu BJ;
Liu CL;
Liu CX;
Liu CY;
Liu FH;
Liu F;
Liu F;
Liu GC;
Liu H;
Liu HB;
Liu HM;
Liu HW;
Liu J;
Liu JP;
Liu K;
Liu KY;
Liu Q;
Liu SB;
Liu XH;
Liu YB;
Liu YF;
Liu YW;
Liu Y;
Liu ZA;
Lu GR;
Lu JG;
Lu QW;
Lu XR;
Lu YP;
Luo CL;
Luo MX;
Luo T;
Luo XL;
Ma CL;
Ma FC;
Ma HL;
Ma QM;
Ma X;
Ma XY;
Maggiora M;
Mao YJ;
Mao ZP;
Min J;
Mo XH;
Muchnoi NY;
Nefedov Y;
Ning FP;
Olsen SL;
Ouyang Q;
Pelizaeus M;
Peters K;
Ping JL;
Ping RG;
Poling R;
Pun CSJ;
Qi M;
Qian S;
Qiao CF;
Qiu JF;
Rong G;
Ruan XD;
Sarantsev A;
Shao M;
Shen CP;
Shen XY;
Sheng HY;
Sonoda S;
Spataro S;
Spruck B;
Sun DH;
Sun GX;
Sun JF;
Sun SS;
Sun XD;
Sun YJ;
Sun YZ;
Sun ZJ;
Sun ZT;
Tang CJ;
Tang X;
Tang XF;
Tian HL;
Toth D;
Varner GS;
Wan X;
Wang BQ;
Wang JK;
Wang K;
Wang LL;
Wang LS;
Wang P;
Wang PL;
Wang Q;
Wang SG;
Wang XD;
Wang XL;
Wang YD;
Wang YF;
Wang YQ;
Wang Z;
Wang ZG;
Wang ZY;
Wei DH;
Wen SP;
Wiedner U;
Wu LH;
Wu N;
Wu W;
Wu YM;
Wu Z;
Xiao ZJ;
Xie YG;
Xu GF;
Xu GM;
Xu H;
Xu M;
Xu M;
Xu XP;
Xu Y;
Xu ZZ;
Xue Z;
Yan L;
Yan WB;
Yan YH;
Yang HX;
Yang M;
Yang P;
Yang SM;
Yang YX;
Ye M;
Ye MH;
Yu BX;
Yu CX;
Yu L;
Yuan CZ;
Yuan Y;
Zeng Y;
Zhang BX;
Zhang BY;
Zhang CC;
Zhang DH;
Zhang HH;
Zhang HY;
Zhang JW;
Zhang JY;
Zhang JZ;
Zhang L;
Zhang SH;
Zhang XY;
Zhang Y;
Zhang YH;
Zhang ZP;
Zhao C;
Zhao HS;
Zhao JW;
Zhao JW;
Zhao L;
Zhao L;
Zhao MG;
Zhao Q;
Zhao SJ;
Zhao TC;
Zhao XH;
Zhao YB;
Zhao ZG;
Zhemchugov A;
Zheng B;
Zheng JP;
Zheng YH;
Zheng ZP;
Zhong B;
Zhong J;
Zhou L;
Zhou ZL;
Zhu C;
Zhu K;
Zhu KJ;
Zhu QM;
Zhu XW;
Zhu YS;
Zhu ZA;
Zhuang J;
Zou BS;
Zou JH;
Zuo JX;
Zweber P
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