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arXiv 1009.3871hep-ph
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多粒子产生的唯象方法

Phenomenological Approach to Multiple Particle Production

A. Ohsawa, E. H. Shubuya, M. Tamada

摘要:

我们制定经验的快度密度分布的多粒子生产中产生的粒子。假设的机制是,所产生的粒子是从几个发射中心,位于快度轴各向同性发射。该公式包括五个可调参数,由不同能量下的(赝)快度密度分布和横动量分布的实验数据确定。与其它模型的快度密度分布不同的是,粒子产生在前区被强烈抑制。在此基础上,我们讨论了高能时的多重数和非弹性,LHC能区的赝快度密度分布以及一些推测。

英文摘要:

We formulate empirically the rapidity density distribution of produced particles in multiple particle production. The assumed mechanism is that the produced particles are emitted isotropically from several emitting centers, located on the rapidity axis. The formula includes five adjustable parameters, which are to be determined by the experimental data of (pseudo-)rapidity density distributions and transverse momentum distributions at various energies. It is a distinguished difference of the present rapidity density distribution from those of other models that the particle production is suppressed strongly in the forward region. We discuss multiplicity and inelasticity at high energies, the pseudo-rapidity density distribution at LHC energy and some speculations, based on the present formulation.

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