论文标题
在弦乐节体化中的超精细分裂效果
Hyperfine splitting effects in string hadronization
论文作者
论文摘要
我们重新审视Lund String强调模型中强子形成的配方。鉴于传入的夸克或夸克 - 二夸克对,对强子形成的重量进行了更新,以采用U,D型和S型夸克之间的质量差异产生的超细分裂效应。我们发现该过程改善了$ \ mathrm {e}^+\ mathrm {e}^ - $ collisions和中性电流dis中的$ ϕ $ cross部分中的强子屈服的描述。我们还展示了质子碰撞的结果,并在小型系统集合的背景下讨论了这项研究的未来使用。
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.