Absolute photon energy calibration for the BESIH EMC

O4; 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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Veröffentlicht in:	中国物理C（英文版） 2010, Vol.34 (1), p.72-77
Hauptverfasser:	BIAN Jian-Ming, HE Kang-Lin, LI Wei-Guo, HU Tao, FU Cheng-Dong, HUANG Bin, LIU Ying, L(U) Qi-Wen, NING Fei-Peng, SONG Wen-Bo, SUN Sheng-Sen, XU Min, YAN Jie, YAN Liang
Format:	Artikel
Sprache:	eng
Online-Zugang:	Volltext
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Zusammenfassung:	O4; 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).
ISSN:	1674-1137