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arXiv 1806.09016hep-ph
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用快度关联研究微型喷流和MPI

Studying minijets and MPI with rapidity correlations

Maxim Azarkin, Piotr Kotko, Andrzej Siodmok, Mark Strikman

摘要:

我们提出并进行了详细的研究,观察敏感的不同机制的微型喷气式飞机生产。这类观测量测量了与各种触发物体相关的强子的横动量如何作为快度的函数平衡。结果表明,观测值是敏感的模型参数相关的微型射流生产机制:低- $p_{\rm T}$截止调节射流截面,质子中的部分子的横向分布,和部分子分布函数。我们在不同的电荷粒子多重性和碰撞能量进行我们的测试。MC模型,它描述了LHC数据的许多功能,被发现预测相当不同的结果,表现出高分辨力的建议观测。我们还回顾了\sc{Herwig},\sc{Pythia},和\sc{Sherpa}蒙特卡罗模型的机制和组件相关的微型喷气生产。

英文摘要:

We propose and carry a detailed study of an observable sensitive to different mechanisms of minijet production. The class of observables measures how the transverse momenta of hadrons produced in association with various trigger objects are balanced as a function of rapidity. It is shown that the observables are sensitive to the model parameters relevant to the minijet production mechanisms: low-$p_{\rm T}$ cut-off regulating jet cross-section, transverse distribution of partons in protons, and parton distribution functions. We perform our test at different charge-particle multiplicities and collision energies. The MC models, which describe many features of the LHC data, are found to predict quite different results demonstrating high discriminating power of the proposed observables. We also review mechanisms and components of \sc{Herwig}, \sc{Pythia}, and \sc{Sherpa} Monte Carlo models relevant to the minijet production.

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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