Mass effect in polarization investigation at BEPC/BES and the B-factory
Mass effect in polarization investigation at BEPC/BES and the B-factory
复制标题
BEPC/BES 和 B 工厂极化研究中的质量效应
DOI：
10.1088/1674-1137/37/1/013102
复制
发表时间：
2013
影响因子：
3.6
通讯作者：
马伯强
中科院分区：
文献类型：
--
作者：
H. Jia;马伯强
考虑了初始电子束和正电子束极化后，电子-正电子对湮灭成一对较重费米子的过程。通过计算末态粒子的极化率，详细讨论了BEPC/BES在τ粲能区产生的粒子质量对末态粒子极化率的影响，并与B工厂的结果进行了比较。这一研究对BEPC/BES装置和B工厂可能的极化研究的设计是有用的。
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 τ-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.