hep-ex
Study of the tracking efficiency of charged pions at BESIII
Fang Liu Xiao-Bin Ji Sheng-Sen Sun Huai-Min Liu Shuang-Shi Fang Xiao-Ling Li Tong Chen Xin-Nan Wang Ming-Run Li Liang-Liang Wang Ling-Hui Wu Ye Yuan Yao Zhang Wen-Jing Zhu