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arXiv 2201.06316hep-ph
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弦强子化中的超精细分裂效应

Hyperfine splitting effects in string hadronization

Christian Bierlich, Smita Chakraborty, Gösta Gustafson, Leif Lönnblad

摘要:

我们重新审视强子形成的配方在隆德弦强子化模型。给定一个进入的夸克或夸克-双夸克对,强子形成的权重被更新,以考虑u,d-型和s-型夸克之间质量差引起的超精细分裂效应。我们发现,该程序提高了强子产额的描述$\mathrm{e}^+\mathrm{e}^-$碰撞和$ϕ$截面中性电流DIS。我们还显示质子碰撞的结果,并讨论了未来使用这项研究的背景下,小系统集体。

英文摘要:

We revisit the recipe for hadron formation in the Lund string hadronization model. Given an incoming quark or quark-diquark pair, weights for hadron formation are updated to take hyperfine splitting effects arising from the mass difference between u, d-type and s-type quarks. We find that the procedure improves the description of hadron yields in $\mathrm{e}^+\mathrm{e}^-$ collisions and the $ϕ$ cross section in neutral current DIS. We also show results for proton collisions, and discuss the future use of this study in the context of small system collectivity.

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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