Monte Carlo Simulation of the Process e+e−→τ+τ− (γ)+
Monte Carlo Simulation of the Process e+e−→τ+τ− (γ)+
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过程 e+e−→τ+τ− (γ)+ 的蒙特卡罗模拟
DOI：
10.1007/978-3-7091-8780-7_27
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发表时间：
1984
期刊：
影响因子：
--
通讯作者：
Z. Was
中科院分区：
文献类型：
--
作者：
Z. Was
本文讨论了蒙特卡罗（Monte Carlo，M.C.）在O（α3）QED计算的基础上，包括Z 0交换（在低能近似下），模拟了e+e−→τ+τ−（γ），τ→ ε e（μ，π，ρ.）的产生和衰变过程.还考虑了τ的有限质量以及e±和τ±的自旋极化效应。通过这种方式，所有可能产生横截面系统变化的影响（低至1%的水平）都得到了控制。因此，从τ产生阈值到最高的PETRA/PEP能量（~ 45 GeV），保证了精度水平。
The purpose of this talk is to discuss some results obtained from the Monte Carlo (M.C.) simulation of the combined production and decay process e+e−→τ+τ−(γ), τ→υ e(μ, π, ρ …) based on the O(α3) QED calculations, including Z0exchange (in the low energy approximation). The effects due to finite mass of τ, and to spin polarization of e±and τ±are also included. In this way all possible effects which would produce systematic variation of the cross section, down to 1 % level, are under control. Thus, accuracy level is assured from the τ production threshold up to the highest PETRA/PEP energies (~ 45 GeV).