Measurement of the Cross Section for e+e- →Hadrons at Energies from 2.2324 to 3.6710 GeV
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CitationAblikim, M., Achasov, M. N., Adlarson, P., Ahmed, S., Albrecht, M., Aliberti, R., . . . (BESIII Collaboration). (2022). Measurement of the cross section for e+e- →Hadrons at energies from 2.2324 to 3.6710 GeV. Physical Review Letters, 128(6) doi:10.1103/PhysRevLett.128.062004
Based on electron-positron collision data collected with the BESIII detector operating at the Beijing Electron-Positron Collider II storage rings, the value of Rσ(e+e-→hadrons)/σ(e+e-→μ+μ-) 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.