Measurements of the center-of-mass energies at BESIII via the di-muon process


Ablikim M., Achasov M. N., Ai X. C., Albayrak O., Albrecht M., Ambrose D. J., ...More

CHINESE PHYSICS C, vol.40, no.6, pp.5-12, 2016 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 40 Issue: 6
  • Publication Date: 2016
  • Doi Number: 10.1088/1674-1137/40/6/063001
  • Journal Name: CHINESE PHYSICS C
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.5-12
  • Bursa Uludag University Affiliated: No

Abstract

From 2011 to 2014, the BESIII experiment collected about 5 fb(-1) data at center-of-mass energies around 4 GeV for the studies of the charmonium-like and higher excited charmonium states. By analyzing the di-muon process e(+)e(-)->gamma ISR/FSR mu(+)mu(-), the center-of-mass energies of the data samples are measured with a precision of 0.8 MeV. The center-of-mass energy is found to be stable for most of the time during data taking.