Kaon and pion fluctuations from small disoriented chiral condensates
Kaon and pion fluctuations from small disoriented chiral condensates
复制标题
来自小的迷失方向的手性凝聚物的 Kaon 和 pion 波动
DOI：
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发表时间：
2001
期刊：
影响因子：
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通讯作者：
J. Kapusta
中科院分区：
文献类型：
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作者：
S. Gavin;J. Kapusta
在ccm能量为17 a GeV的Pb+Pb碰撞中，ω和反ω重子产生的增强可以用许多小的无取向手性凝聚区的形成来解释。这种解释意味着中性和带电的介子以及介子必须表现出新的同位旋涨落。我们计算了来自这些区域的中性介子和介子的分数分布。然后，我们提出了稳健的统计观测值，可用于从RHIC和LHC的介子和介子测量的背景贡献中提取新的波动。
Enhancement of omega and antiomega baryon production in Pb+Pb collisions at a c.m. energy of 17 A GeV can be explained by the formation of many small disoriented chiral condensate regions. This explanation implies that neutral and charged kaons as well as pions must exhibit novel isospin fluctuations. We compute the distribution of the fraction of neutral pions and kaons from such regions. We then propose robust statistical observables that can be used to extract the novel fluctuations from background contributions in pion and kaon measurements at RHIC and LHC.