Observation of e(+) e(-) -> gamma chi(c1) and search for e(+) e(-) -> gamma chi(c0), gamma chi(c2), and gamma eta(c) at root s near 10.6 GeV at Belle
Observation of e(+) e(-) -> gamma chi(c1) and search for e(+) e(-) -> gamma chi(c0), gamma chi(c2), and gamma eta(c) at root s near 10.6 GeV at Belle
复制标题
观察 e( ) e(-) -> gamma chi(c1) 并在根 s 附近搜索 e( ) e(-) -> gamma chi(c0)、gamma chi(c2) 和 gamma eta(c)
DOI：
10.1103/physrevd.98.092015
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发表时间：
2018
影响因子：
5
通讯作者：
Cer
中科院分区：
文献类型：
--
作者：
Jia S.;Wang X. L.;Shen C. P.;Yuan C. Z.;Adachi I.;Aihara H.;Al Said S.;Asner D. M.;Atmacan H.;Aulchenko V.;Aushev T.;Ayad R.;Babu V.;Bansal V.;Behera P.;Beleno C.;Berger M.;Bhuyan B.;Bilka T.;Biswal J.;Bobrov A.;Bozek A.;Bracko M.;Browder T. E.;Cao L.;Cer
利用KEKB非对称能量对撞机Belle探测器在质心能量分别为10.52、10.58和10.867 GeV时采集的、、和数据样本，我们研究了排他反应（、1、2）和。首次观测到一个包含系统不确定性的重要信号。没有发现，和最终状态的显著过剩，我们将Born截面（）的90%可信度上限设置为10.52 GeV， 10.58 GeV和10.867 GeV。结合BESIII在较低质心能量下测量的截面，得到了的能量依赖关系。
Using data samples of,, andcollected with the Belle detector at the KEKB asymmetric-energycollider at center-of-mass energies 10.52, 10.58, and 10.867 GeV, respectively, we study the exclusive reactions(, 1, 2) and. A significantsignal is observed for the first time atwith a significance ofincluding systematic uncertainties. No significant excesses for,, andfinal states are found, and we set 90% credibility level upper limits on the Born cross sections () at 10.52 GeV, 10.58 GeV, and 10.867 GeV. Together with cross sections measured by BESIII at lower center-of-mass energies, the energy dependency ofis obtained.