arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0902.0985hep-ph
收藏

束缚态μ介子衰变产生的电子

Electrons from Muon Decay in Bound State

Rashid M. Djilkibaev, Rostislav V. Konoplich

摘要:

本文研究了μ子轨道衰变(DIO)对μ子-电子转换信号区的贡献。来自DIO的电子是μ子-电子转换实验的主要背景源,因为DIO电子的端点与来自弹性μ子-电子转换的电子的能量相同。DIO贡献的信号区域的概率被认为是一个跟踪器与高斯分辨率函数和一个现实的分辨率函数中获得的应用模式识别和动量重建卡尔曼滤波器为基础的程序GEANT模拟DIO事件。结果发现,在现实的分辨率函数中的非高斯尾巴的存在不会导致显着增加DIO的信号区域的贡献。假设量热计的分辨率函数为高斯函数,研究了DIO对量热计信号贡献的概率与分辨率的关系。在这项研究中,几何接受起着重要的作用,抑制DIO贡献的中程电子从μ子衰变在轨道上。

英文摘要:

We present results of a study of the muon decay in orbit (DIO) contribution to the signal region of muon - electron conversion. Electrons from DIO are the dominant source of background for muon - electron conversion experiments because the endpoint of DIO electrons is the same as the energy of electrons from elastic muon - electron conversion. The probability of DIO contribution to the signal region was considered for a tracker with Gaussian resolution function and with a realistic resolution function obtained in the application of pattern recognition and momentum reconstruction Kalman filter based procedure to GEANT simulated DIO events. It is found that the existence of non Gaussian tails in the realistic resolution function does not lead to a significant increase in DIO contribution to the signal region. The probability of DIO contribution to the calorimeter signal was studied in dependence on the resolution, assuming a Gaussian resolution function of calorimeter. In this study the geometrical acceptance played an important role, suppressing DIO contribution of the intermediate range electrons from muon decay in orbit.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑