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arXiv 0804.4132hep-ph
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再论e+e碰撞中强子产生的热描述

Thermal description of hadron production in e+e- collisions revisited

A. Andronic, F. Beutler, P. Braun-Munzinger, K. Redlich, J. Stachel

摘要:

本文在强子共振气体统计模型的框架下,对不同质心能量的e+e碰撞中的强子产生进行了全面的分析。该模型是制定在正则系综与所有相关的量子数精确守恒。基础模型的参数是通过拟合最近在$\sqrt{s}$ = 10、29-35、91和130-200 GeV的测量值的平均多重数确定的。结果表明,在实验的准确性,没有一个数据集是令人满意的描述与这种方法,质疑的概念,粒子生产在电子+电子碰撞是热的起源。

英文摘要:

We present a comprehensive analysis of hadron production in e+e- collisions at different center-of-mass energies in the framework of the statistical model of the hadron resonance gas. The model is formulated in the canonical ensemble with exact conservation of all relevant quantum numbers. The parameters of the underlying model were determined using a fit to the average multiplicities of the latest measurements at $\sqrt{s}$ = 10, 29-35, 91 and 130-200 GeV. The results demonstrate that, within the accuracy of the experiments, none of the data sets is satisfactorily described with this approach, calling into question the notion that particle production in e+e- collisions is thermal in origin.

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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