Event calendar file
Seminar: Weiping Wang
Thursday, 16 January 2020
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(Asia/Shanghai)
| Description |
Title: Measurement of R value at BESIII Abstract: The R ratio, which is defined as the lowest order of inclusive hadronic cross section in units of the lowest order di-muon cross section, is of fundamental importance in precision test of the Standard Model and QCD. Improvement of the precision of measured R values will efficiently increase the accuracy of the QED running coupling constant evaluated at the Z pole and the anomalous magnetic moment of the muon, i.e. the g-2. Based on high luminosity scan data collected by BESIII detector, we are allowed to measure the R values with unprecedented precision. |
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