Luminosity measurements for the R scan experiment at BESIII


Ablikim M., Achasov M., Ahmed S., Ai X., Albayrak O., Albrecht M., ...More

Chinese Physics C, vol.41, no.6, 2017 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 41 Issue: 6
  • Publication Date: 2017
  • Doi Number: 10.1088/1674-1137/41/6/063001
  • Journal Name: Chinese Physics C
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Keywords: Bhabha, diphoton, luminosity, R value
  • Ankara University Affiliated: Yes

Abstract

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.