Çetin, Serkant Ali2022-11-022022-11-022022-02-110031-9007https://hdl.handle.net/11411/4637https://doi.org/10.1103/PhysRevLett.128.062004Abstract: Based on electron-positron collision data collected with the BESIII detector operating at the Beijing Electron-Positron Collider II storage rings, the value of R?(e+e-?hadrons)/?(e+e-??+?-) is measured at 14 center-of-mass energies from 2.2324 to 3.6710 GeV. The resulting uncertainties are less than 3.0% and are dominated by systematic uncertainties. © 2022 authors. Published by the American Physical Society.eninfo:eu-repo/semantics/openAccessArticle2-s2.0-8512494778510.1103/PhysRevLett.128.06200435213186Q1WOS:000759205400004