Measurements of the center-of-mass energies at BESIII via the di-muon process
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KünyeAblikim, M., Achasov, M. N., Ai, X. C., Albayrak, O., Albrecht, M., Ambrose, D. J. … BESIII Collaboration. (2016). Measurements of the center-of-mass energies at BESIII via the di-muon process. Chinese Physics C, 40(6), 5-12, http://dx.doi.org/10.1088/1674-1137/40/6/063001
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.