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Luminosity measurements for the R scan experiment at BESIII
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arxiv 1702.04977 v1 pith:TQFNWAHB submitted 2017-02-11 hep-ex physics.data-an
Luminosity measurements for the R scan experiment at BESIII
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By analyzing the large-angle Bhabha scattering events $e^{+}e^{-}$ $\to$ ($\gamma$)$e^{+}e^{-}$ and diphoton events $e^{+}e^{-}$ $\to$ $\gamma\gamma$ 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 the important inputs for R value and $J/\psi$ resonance parameter measurements.
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