Search for gamma (1S,2S) -> Z(c)(+)Z(c)((')-) and e(+)e(-) -> Z(c)(+)Z(c)((')-) at root s=10.52, 10.58, and 10.867 Gev
Search for gamma (1S,2S) -> Z(c)(+)Z(c)((')-) and e(+)e(-) -> Z(c)(+)Z(c)((')-) at root s=10.52, 10.58, and 10.867 Gev
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DOI：
10.1103/physrevd.97.112004
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发表时间：
2018
影响因子：
5
通讯作者：
K
中科院分区：
文献类型：
--
作者：
Jia S.;Shen C. P.;Yuan;C. Z.;Adachi;I.;Aihara;H.;Al Said;S.;Asner;D. M.;Aulchenko;V.;Aushev;T.;Ayad;R.;Baba;V.;Badhrees;I.;Bansa;V.;Behera;P.;Beleno;C.;Bhuyan;B.;Bilka;T.;Biswa;J.;Bozek;A.;Bracko;M.;Cervenkov;D.;Chekelian;V.;Chen;A.;Cheon;B. G.;Chilikin;K
利用KEKB非对称能量正负电子对撞机上的贝尔探测器收集的数据，首次探索了ϒ(1S)和ϒ(2S)在10.58和10.867 GeV衰变和湮灭中的双电荷类Charmoni态产生。在ϒ(1S)和ϒ(2S)衰变[B(ϒ(1S，2S)→Zc+Zc(‘)-)×B(Zc+→π++cc’)(，，)]以及()的Born截面和分支分数的乘积分别为10.58和10.867 GeV时，没有观察到显著的信号，并确定了其产物分支分数的90%可信水平上限。这里，指的是在最终状态中观察到的，在最终状态中观察到的，以及在最终状态中观察到的.
The first search for double charged charmoniumlike state production in ϒ(1S) and ϒ(2S) decays and inannihilation at, 10.58, and 10.867 GeV is conducted using data collected with the Belle detector at the KEKB asymmetric energy electron-positron collider. No significant signals are observed in any of the studied modes, and the 90% credibility level upper limits on their product branching fractions in ϒ(1S) and ϒ(2S) decays [B(ϒ(1S,2S)→Zc+Zc(′)-)×B(Zc+→π++cc¯) (,,)] and the product of Born cross section and branching fraction for() at, 10.58, and 10.867 GeV are determined. Here,refers to theandobserved in thefinal state, theandin thefinal state, and theandin thefinal state.