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arXiv 1104.0532hep-ph
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胶子在LHC pp碰撞中软和半硬多重强子产生中的作用

Role of gluons in soft and semi-hard multiple hadron production in pp collisions at LHC

V. A. Bednyakov, A. A. Grinyuk, G. I. Lykasov, M. Poghosyan

摘要:

在修正的夸克-胶子弦模型下,考虑了初始能量较宽区域内质子中夸克的纵向和横向运动,分析了pp碰撞中的强子包容谱。自洽分析表明,在横动量不大于1- 2GeV/c的情况下,ISR能区轻强子(如π介子和K介子)的包含谱的实验数据可以得到满意的描述。我们讨论了在ISR以上的能量应用这个模型的一些困难,并建议包括胶子的分布在质子的内部横动量未整合。它导致强子的包容谱的增加,并允许我们扩展令人满意的描述在中心快度区的能量高于ISR的数据。

英文摘要:

Hadron inclusive spectra in pp collisions are analyzed within the modified quark-gluon string model including both the longitudinal and transverse motion of quarks in the proton in the wide region of initial energies. The self-consistent analysis shows that the experimental data on the inclusive spectra of light hadrons like pions and kaons at ISR energies can be satisfactorily described at transverse momenta not larger than 1-2 GeV/c. We discuss some difficulties to apply this model at energies above the ISR and suggest to include the distribution of gluons in the proton unintegrated over the internal transverse momentum. It leads to an increase in the inclusive spectra of hadrons and allows us to extend the satisfactory description of the data in the central rapidity region at energies higher than ISR.

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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