期刊论文

Study on Detection Efficiency of Three-body Final State with Intermediate Resonance

中文

南华大学学报(自然科学版)

1673-0062

2020

34

2

16-20

10.19431/j.cnki.1673-0062.2020.02.003

湖南省研究生科研创新项目（CX20190743）；

本校为第一机构

多体末态过程通常包含的中间共振态直接影响到探测效率的确定.研究了采用二维不变质量谱加权的方法,用于计算多体末态过程的探测效率.对三体末态e+e-→π+π-η过程,考虑了e+e-→π+π-η,e+e-→ρη和e+e-→a±2π?三个过程的贡献,并利用二维不变质量谱加权法对该末态模拟数据样本的探测效率进行了估计.与直接加权的结果对比表明该方法能够快速且有效地确定探测效率.

The intermediate resonance states in the multi-body final state process affect the detection efficiency directly.A two-dimension invariant mass spectra weight method was developed to calculate the detection efficiency of multi-body final state process.For the three-body final state e+e-→π+π-η,two intermediate processes,e.g.e+e-→ρηand e+e-→a±2πshould be considered.The study calculates the detection efficiency of this final state for the simulated data sample by employing the two-dimension invariant mass spectra weight method.The result...