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从强子化过程的两个基本性质出发,在夸克随机组合框架上,得出了包括所有激发态在内的重子产生权重的一组基本关系.解释了“自旋抑制”和单态重子产额大的原因.最后,讨论了进一步确定激发态重子产生比例的条件和方法. 相似文献
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A quark coalescence model, based on semi-relativistic molecular dynamics with color interactions among quarks, is presented and applied to pp collisions. A phenomenological potential with two tunable parameters is introduced to describe the color interactions between quarks and antiquarks. The interactions drive the process of hadronization that finally results in different color neutral clusters, which can be identified as hadrons based on some criteria. A Monte Carlo generator PYTHIA is used to generate quarks in the initial state of hadronization, and different values of tunable parameters are used to study the final state distributions and correlations. Baryon-to-meson ratio, transverse momentum spectra, pseudorapidity distributions and forward-backward multiplicity correlations of hadrons produced in the hadronization process, obtained from this model with different parameters, are compared with those from PYTHIA. 相似文献
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We study the inclusivee
+
e
− processes at the PETRA energy range within QCD and a fixed point theory using the phenomenological Gribov-Lipatov inequality
suggested in an earlier analysis. Theoretical justification is provided within QCD and its possible implication in hadronization
is discussed. 相似文献
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An overview of research status of soft physics in high energy heavy-ion collision experiments and recent experimental results are presented. 相似文献
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用一个简化模型概括的低激发态重子主要衰变分支比和我们在文献[2]中给出的基本关系,得出L=1激发态重子对∑(1385),∑+,(1530)和的衰变贡献,进而用γ共振能量下的实验值R1=(1530),R2=∑(1385)/∑和R3=∧(1520)/∑(1385)作输入,估算了L=1的各激发态重子的产生比例. 相似文献
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用强子化的夸克组合模型研究了e+e-→h′s反应,发现它可以用比LUND弦碎裂模型少得多的可调参数拟合实验事实,并对一些现象给出更直观的理解.对模型预言与实验的某些偏离,也作了分析. 相似文献