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arXiv 1105.4987hep-ph
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LHC多粒子产生的探测

Probes of multiparticle production at the LHC

M. G. Ryskin, A. D. Martin, V. A. Khoze

摘要:

我们讨论了如何高能量的“软”和“半硬”PP碰撞的主要特点可能被描述的部分子级联和多坡密子交换。Pomeron之间的相互作用通过低k_t部分子的吸收产生一个有效的红外截止k_{sat}。这提供了可能性,扩展的部分子的方法,用于'硬'的过程,也描述了高能量的软和半硬相互作用。特别是,存在的截止k_{sat},这增加了对撞机的能量,意味着生产和强子化的微型喷注与p_t \gapproxeq k_{sat}的软secondaries的主要来源。我们提出了几个可以在大型强子对撞机上进行的测量,可以进一步阐明我们对驱动软和半硬相互作用的机制的理解。我们表明,Pomeron-Pomeron相互作用的结构可以在双Pomeron交换过程和大快度间隙边缘附近的次级粒子的p_t分布中进行研究。所谓的“脊效应”是两个部分子级联相互作用的另一种表现。

英文摘要:

We discuss how the main features of high-energy `soft' and `semihard' pp collisions may be described in terms of parton cascades and multi-Pomeron exchange. The interaction between Pomerons produces an effective infrared cutoff, k_{sat}, by the absorption of low k_t partons. This provides the possibility of extending the parton approach, used for `hard' processes, to also describe high-energy soft and semihard interactions. In particular, the presence of the cutoff k_{sat}, which increases with collider energy, means that the production and hadronization of minijets with p_t\gapproxeq k_{sat} are the main source of the soft secondaries. We propose several measurements which can be made at the LHC, that can further illuminate our understanding of the mechanism which drives the soft and semihard interactions. We show that the structure of Pomeron-Pomeron interactions may be studied in Double-Pomeron-Exchange processes and in the p_t distributions of secondaries near the edge of large rapidity gaps. The so-called `ridge effect' is another manifestation of the interaction of two partonic cascades.

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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