海量图书期刊资源,随时随地畅享阅读乐趣
Status and future plan of R measurement at BESHaiming Hu; Wenbiao Yan; Zhengguo Zhao · 2004
τ mass and <i>R</i> -value measurements at BESZheng, Zhipeng; Fang, Shuangshi; Huang, Guangshun · International Journal of Modern Physics A · 2017
Measurement of R from 2 to 5 GeV and related QCD topics at BESW.B. Yan; Z.G. Zhao · 2004
Present status of the measurement of R value and form factors of e+e− → π+π−π+π− and at BESHaiming Hu; Yao Weng; Yiqing Guo · 2006