Absolute photon energy calibration for the BESⅢ EMC

被引:1
|
作者
边渐鸣 [1 ,2 ]
何康林 [1 ,2 ]
李卫国 [1 ]
胡涛 [1 ]
傅成栋 [1 ]
黄彬 [1 ,2 ]
刘颖 [1 ]
吕绮雯 [3 ]
宁飞鹏 [3 ]
宋文博 [1 ,2 ]
孙胜森 [1 ]
徐敏 [4 ]
言杰 [4 ]
严亮 [1 ,2 ]
机构
[1] Institute of High Energy Physics, CAS
[2] Graduate University of Chinese Academy of Sciences
[3] Shanxi University
[4] Department of Modern Physics, University of Science and Technology of China
基金
中国国家自然科学基金;
关键词
D O I
暂无
中图分类号
O572.212 [];
学科分类号
070202 ;
摘要
The absolute energy calibration with photons from π0’s for the BESⅢ EMC is discussed. Using 3 million hadronic events, the preliminary results are presented. Precision of about 1% in the photon energy measurement is obtained from crossing check using photons in ψ(2S)→γχc1,2(1P).
引用
收藏
页码:72 / 77
页数:6
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