论文标题
在CEPC基线检测器上进行DE/DX测量和PID性能的需求分析
Requirement analysis for dE/dx measurement and PID performance at the CEPC baseline detector
论文作者
论文摘要
圆形电子 - 峰值对撞机（CEPC）不仅可以作为希格斯工厂，而且可以作为Z-boson工厂运行，为粒子识别（PID）至关重要的风味物理研究提供了巨大的机会。 CEPC的基线检测器可以记录可用于区分不同物种颗粒的TOF和DE/DX信息。我们使用完整模拟的物理基准分析来量化物理要求和检测器性能。我们得出的结论是，在$ 50 \，$ ps的基准TOF性能下，DE/DX分辨率应大于桶形区域的入射颗粒的3％，其相关能量大于$ 2 \，$ GEV/c/c。这种表现会导致$ k^{\ pm} $识别97％/96％，$ d^0 \至π^+k^ - $重建68.19％/89.05％，$ ϕ \ $ ncountuctions solatist solative solatist solatist solatist solutical solications solatist solatist cotsions contists contists contist cotsions contistions contist contist cotisting contist contist contist。
The Circular Electron-Positron Collider (CEPC) can be operated not only as a Higgs factory but also as a Z-boson factory, offering great opportunities for flavor physics studies where Particle Identification (PID) is critical. The baseline detector of the CEPC could record TOF and dE/dx information that can be used to distinguish particles of different species. We quantify the physics requirements and detector performance using physics benchmark analyzes with full simulation. We conclude that at the benchmark TOF performance of $50\,$ps, the dE/dx resolution should be better than 3% for incident particles in the barrel region with a relevant energy larger than $2\, $GeV/c. This performance leads to an efficiency/purity of $K^{\pm}$ identification 97%/96%, $D^0\to π^+K^-$ reconstruction 68.19%/89.05%, and $ϕ\to K^+K^-$ reconstruction 82.26%/77.70%, providing solid support for relevant CEPC flavor physics measurements.
