Absolute photon energy calibration for the BESIII EMC

Jian Ming Bian, Kang Lin He, Wei Guo Li, Tao Hu, Cheng Dong Fu, Bin Huang, Ying Liu, Qi Wen Lü, Fei Peng Ning, Wen Bo Song, Sheng Sen Sun, Min Xu, Jie Yan, Liang Yan

Research output: Contribution to journalArticlepeer-review

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The absolute energy calibration with photons from π0's for the BESIII EMC is discussed. Using 3 million hadronic events, the preliminary results are presented. Precision of about 1% in the photon energy measurement is obtained from crossing check using photons in Ψ(2S) γχ c1,2 (1P).

Original languageEnglish (US)
Pages (from-to)72-77
Number of pages6
JournalChinese Physics C
Issue number1
StatePublished - 2010


  • Absolute energy calibration
  • Electromagnetic calorimeter
  • π decay


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