Absolute photon energy calibration for the BESIH EMC

期刊名字：中國物理C（英文版）
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論文作者：BIAN Jian-Ming，HE Kang-Lin，LI
作者單位：Institute of High Energy Physics,Graduate University of Chinese Academy of Sciences,L(U) Qi-Wen,Department of Modern Phy
更新時間：2022-11-28
下載次數(shù)：次

論文簡介

The absolute energy calibration with photons from π~0'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)(1.P).

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