极化夸克碎裂的简化递归${}^3P_0$模型
A simplified recursive ${}^3P_0$ model for the fragmentation of polarized quarks
摘要：
基于$q\bar{q}$对产生的弦+ ${}^3P_0$机制，我们重新审视了极化夸克碎裂的递归模型。我们对模型的一个输入函数做了不同的选择，简化了蒙特卡罗程序的实现。没有引入新的参数，相关的结果是相同的，除了抑制连续夸克之间的自旋无关的相关性。此外，当前版本更适合于与外部事件生成器的接口。理论方面和一个独立的程序得到的模拟结果进行了详细讨论，并与以前版本的模型。
英文摘要：
We revisit our recursive model for the fragmentation of polarized quarks based on the string+${}^3P_0$ mechanism of $q\bar{q}$ pair creation. We make a different choice for one input function of the model that simplifies the implementation in a Monte Carlo program. No new parameters are introduced, and the relevant results are the same apart from the suppression of the spin-independent correlations between successive quarks. In addition, the present version is more suitable for an interface with external event generators. The theoretical aspects and the simulation results obtained with a stand alone program are discussed in detail and compared with those of the previous version of the model.
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