相对论重离子碰撞实验中混合事件方法的研究

A Study of Mixing Event Method in Relativistic Heavy Ion Collision Experiments

把RQMD(RelativisticQuantumMolecularDynamics)产生器产生的数据输入作为原始事例取样 ,讨论了在比较复杂的背景情况下 ,一种新的混合事件方法 ,用以证实在相对论重离子碰撞实验中高能量激发共振态的存在 .并以共振态重子Δ+ +

A new mixing event method is developed in the analysis of relativistic heavy ion collision experiments with a relatively complicated background by using RQMD (Relativistic Quantum Molecular Dynamics) as input data sample. The proposed method is then applied to the study of invariant mass distribution of Δ ++ resonance as an example. A new iterative algorithm is also proven by providing the invariant mass spectra of Δ ++ 's using different algorithms for the combinatorial background subtraction.