Measurement of integrated luminosity and center-of-mass energy of data taken by BESIII at √ s=2.125 GeV

M. Ablikim, M. N. Achasov, S. Ahmed, X. C. Ai, O. Albayrak, M. Albrecht, D. J. Ambrose, Z. Haddadi, N. Kalantar-Nayestanaki, M. Kavatsyuk, H. Löhner, J. G. Messchendorp, M. Tiemens, BESIII Collaboration

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    Abstract

    To study the nature of the state Y (2175), a dedicated data set of e+e- collision data was collected at the center-of-mass energy of 2.125 GeV with the BESIII detector at the BEPCII collider. By analyzing large-angle Bhabha scattering events, the integrated luminosity of this data set is determined to be 108.49±0.02±0.85 pb-1, where the first uncertainty is statistical and the second one is systematic. In addition, the center-of-mass energy of the data set is determined with radiative dimuon events to be 2126.55±0.03±0.85 MeV, where the first uncertainty is statistical and the second one is systematic.
    Original languageEnglish
    Article number113001
    Number of pages9
    JournalChinese Physics C
    Volume41
    Issue number11
    DOIs
    Publication statusPublished - Nov-2017

    Keywords

    • Y(2175)
    • STATE
    • HYBRID
    • radiative dimuon events
    • center-of-mass energy
    • Bhabha scattering
    • luminosity

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