Measurement of the e+e− → eta J/psi cross section and search for e+e− → pi0J/psi at center-of-mass energies between 3.810 and 4.600 GeV
Measurement of the e+e− → eta J/psi cross section and search for e+e− → pi0J/psi at center-of-mass energies between 3.810 and 4.600 GeV
复制标题
测量 e e–– J/Ï 横截面并在 3.810 至 4.600 GeV 之间的质心能量处搜索 e e–– 0J/Ï
DOI：
10.1103/physrevd.91.112005
复制
发表时间：
2015
影响因子：
5
通讯作者：
严亮
中科院分区：
文献类型：
--
作者：
王志宏;严亮
利用BESIII探测器在BEPCII对撞机上采集的数据样本，在17个质心能量为3.810 ~ 4.600 GeV的范围内进行了研究。在每个质心能量处测量这两个过程的玻恩横截面。测得的能量相关玻恩截面在4.2 GeV左右增强。该测量与Belle先前的测量是兼容的。
Using data samples collected with the BESIII detector operating at the BEPCII collider at 17 center-of-mass energies from 3.810 to 4.600 GeV, we perform a study ofand. The Born cross sections of these two processes are measured at each center-of-mass energy. The measured energy-dependent Born cross section forshows an enhancement around 4.2 GeV. The measurement is compatible with an earlier measurement by Belle.