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arXiv 2201.05509hep-ph
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强子化的弦+ ${}^3P_0$模型

The String+${}^3P_0$ Model of Hadronization

Xavier Artru, Albi Kerbizi

摘要:

我们提出了赝标和矢量介子产生的极化夸克碎裂的量子力学弦+ ${}^3P_0$模型的主要理论方面。该模型是一个扩展的隆德弦碎裂模型,系统地包括夸克自旋自由度假设的${}^3P_0$机制的夸克对生产在弦断裂。最近实现的矢量介子的引入,解释了后者与碎裂链夸克之间的自旋相关。弦+ ${}^3P_0$模型再现了横向自旋效应,如柯林斯效应和双强子不对称性,以及纵向自旋效应,如喷流旋向性。

英文摘要:

We present the main theoretical aspects of the quantum mechanical string+${}^3P_0$ model of polarized quark fragmentation for pseudoscalar and vector meson production. The model is an extension of the Lund string fragmentation model that systematically includes the quark spin degree of freedom assuming the ${}^3P_0$ mechanism of quark pair production at string breaking. The recently achieved introduction of vector mesons accounts for the spin correlations between the latter and the quark of the fragmentation chain. The string+${}^3P_0$ model reproduces transverse spin effects such as the Collins effect and the dihadron asymmetry, and longitudinal spin effects such as the jet handedness.

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。

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