Z′ particles and e+e− → τ+µ−

Z′ particles and e+e− → τ+µ−
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DOI:
10.1007/s11433-010-4149-0
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发表时间:
2010-10
期刊:
Science China Physics, Mechanics and Astronomy
影响因子:
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通讯作者:
Tie-Jun Gao;T. Feng;Xue–qian Li;Z. Si;Shu-Min Zhao
Tie-Jun Gao;T. Feng;Xue–qian Li;Z. Si;Shu-Min Zhao
中科院分区:
其他
文献类型:
--
作者:
Tie-Jun Gao;T. Feng;Xue–qian Li;Z. Si;Shu-Min Zhao

文献摘要

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我们在SM及其Z ′扩张的框架下分析了e +e−→τ+µ−的截面.由于中微子的质量很小,SM对总截面的理论预言被压制了。另一方面,由于Z ′与轻子的树级FCNC耦合,Z ′对截面的贡献大大增强。
We analyze the cross section ofe+e−→τ+µ−within the frameworks of SM and itsZ′ extension. The theoretical prediction of the SM on the total cross section is suppressed by the tiny neutrino masses. On the other hand, the contributions fromZ′ to the cross section are enhanced drastically because of the tree level FCNC couplings amongZ′ and leptons.