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首页> 外文期刊>Physical review, C >Statistical hadron-gas treatment of systems created in proton-proton interactions at energies available at the CERN Super Proton Synchrotron
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Statistical hadron-gas treatment of systems created in proton-proton interactions at energies available at the CERN Super Proton Synchrotron

机译：在Cern Super Proton Synchrotron提供的精力下的质子 - 质子相互作用中创建的系统统计托管气体处理

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摘要

We analyze the newest data from the NA61/SHINE Collaboration which, in addition to previous results on pions and kaons, include mean multiplicities of p, Lambda, and phi mesons produced in inelastic proton-proton (p + p) interactions at root S-NN = 6.3-17.3 GeV. The canonical ensemble formulation of the ideal hadron resonance gas (HRG) model is used with exact conservation of net baryon number B = 2, electric charge Q = 2, and strangeness S = 0. The chemical freeze-out parameters in p + p interactions are obtained and compared to those in central nucleus-nucleus collisions. Several features of p + p interactions at the CERN Super Proton Synchrotron within a statistical model are studied: (1) the inclusion of the phi-meson yields in thermal fits worsens significantly the fit quality; (2) the data show large event-by-event multiplicity fluctuations in inelastic p + p interactions which cannot be explained by a single fireball described by a statistical model; and (3) the fits within the canonical ensemble formulation of HRG do not give any improvement over the fits within the grand canonical ensemble formulation, i.e., there are no indications of the existence of a single statistical system in p + p inelastic interactions in the considered energy range.
机译：我们分析了来自NA61 / Shine Conclaboration的最新数据，除了先前的聚物和kOns上的结果，包括在根系中的非弹性质子 - 质子（P + P）相互作用中产生的P，Lambda和Phi Mesons的平均值nn = 6.3-17.3 gev。理想的强子共振气体（HRG）模型的规范集合配方与净胸数B = 2，电荷Q = 2的精确保守使用，奇异S = 0.P + P交互中的化学冻除参数获得并与中央核 - 核碰撞中的那些进行比较。研究了统计模型中Cern Super Proton同步rotron的P + P交互的几个特征：（1）包含Phi-meson产量在热拟合中显着造成质量; （2）数据显示无弹性P + P交互中的大型事件逐个多样性波动，其无法通过统计模型描述的单个火球来解释; （3）HRG的典型集合配方内的配合不会在大典型集合配方内的配合内任何改善，即，没有对P + P非弹性相互作用中的单一统计系统存在的迹象。考虑能量范围。

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