Improved measurements of branching fractions for eta(c) -> phi phi and omega phi
Improved measurements of branching fractions for eta(c) -> phi phi and omega phi
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改进了 eta(c) -> phi phi 和 omega phi 的支化分数测量
DOI：
10.1103/physrevd.95.092004
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发表时间：
2017
影响因子：
5
通讯作者：
Cetin S
中科院分区：
文献类型：
--
作者：
Ablikim M;Achasov M N;Ai X C;Albayrak O;Albrecht M;Ambrose D J;Amoroso A;An F F;An Q;Bai J Z;Ferroli R Baldini;Ban Y;Bennett D W;Bennett J V;Bertani M;Bettoni D;Bian J M;Bianchi F;Boger E;Boyko I;Briere R A;Cai H;Cai X;Cakir O;Calcaterra A;Cao G F;Cetin S
利用BESIII探测器积累的事件，我们研究了衰变到末态和末态。测得的分枝分数为BR(ηc→ϕϕ)=(2.5±0.3-0.7+0.3±0.6)×10-3，其中第一个不确定度为统计不确定度，第二个不确定度为系统不确定度，第三个不确定度为。没有观察到大久保-茨威格-伊祖卡双抑制衰变的显著信号，分支分数的上限被确定为超过90%的置信度水平。
Usingevents accumulated with the BESIII detector, we studydecays toandfinal states. The branching fraction ofis measured to be Br(ηc→ϕϕ)=(2.5±0.3-0.7+0.3±0.6)×10-3, where the first uncertainty is statistical, the second is systematic, and the third is from the uncertainty of. No significant signal for the double Okubo-Zweig-Iizuka suppressed decay ofis observed, and the upper limit on the branching fraction is determined to beat the 90% confidence level.