Luminosity measurements for the R scan experiment at BESIII

• 来源期刊: 中国物理C（英文版）
• 年，卷（期）: 2017,（6）
• 页码范围: 1-10
• 页数: 10页
• 语种: 英文
• DOI: 10.1088/1674-1137/41/6/063001

摘要

By analyzing the large-angle Bhabha scattering events e+e → (γ)e+e and diphoton events e+e-→ (γ)γγ for the data sets collected at center-of-mass (c.m.) energies between 2.2324 and 4.5900 GeV (131 energy points in total) with the upgraded Beijing Spectrometer (BESIII) at the Beijing Electron-Positron Collider (BEPCII),the integrated luminosities have been measured at the different c.m.energies,individually.The results are important inputs for the R value and J/Ψ resonance parameter measurements.