Mass effect in polarization investigation at BEPC/BES and the B-factory

We consider the annihilation process of an electron-positron pair into a pair of heavier fermions when the initial electron and positron beams are polarized. By calculating the polarization of the final-state particles, we discuss in detail the effect due to the produced particle masses in the T-cha...

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Bibliographic Details
Published in:Chinese physics C 2013, Vol.37 (1), p.27-31
Main Authors: Jia, Hanbing, Ma, Bo-Qiang
Format: Article
Language:English
Subjects:
BEPC
BES
Electron-positron pairs
Fermions
Mathematical analysis
Polarization
Positron beams
化调
工厂
末态粒子
正电子束
粒子质量
质量效应
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Summary:We consider the annihilation process of an electron-positron pair into a pair of heavier fermions when the initial electron and positron beams are polarized. By calculating the polarization of the final-state particles, we discuss in detail the effect due to the produced particle masses in the T-charm energy region at BEPC/BES, and also compare the effect with that at the B-factory. Such a study is useful for the design of possible polarization investigation at the BEPC/BES facility and the B-factory.
ISSN:1674-1137
0254-3052
DOI:10.1088/1674-1137/37/1/013102