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arXiv 0812.1784nucl-thhep-ph
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粒子-反粒子对之间的压缩关联

Squeezed correlations among particle-antiparticle pairs

Sandra S. Padula, Danuce M. Dudek, Otavio Socolowski

摘要:

粒子-反粒子对之间的强子相关性在20世纪90年代后期得到了重视,最终证明了如果强子的质量在高能重离子碰撞形成的热而稠密的介质中被修改,它应该存在。它们被称为粒子-反粒子对的背靠背关联(BBC),也被称为压缩关联。然而,尽管它们在理论上已经很好地建立起来,这种强子关联还没有在实验上被发现。期望迫使实验学家寻找这种效应,我们在这里提出了一个明确的方法来寻找BBC信号,通过构建PHI-PHI和K+K-对在RHIC能量的压缩关联函数,绘制在对的平均动量,K12=(k1+k2)/2,在Hanbury-Brown & Twiss(HBT)相关采用的程序的启发。

英文摘要:

The hadronic correlation among particle-antiparticle pairs was highlighted in the late 1990's, culminating with the demonstration that it should exist if the masses of the hadrons were modified in the hot and dense medium formed in high energy heavy ion collisions. They were called Back-to-Back Correlations (BBC) of particle-antiparticle pairs, also known as squeezed correlations. However, even though they are well-established theoretically, such hadronic correlations have not yet been experimentally discovered. Expecting to compel the experimentalists to search for this effect, we suggest here a clear way to look for the BBC signal, by constructing the squeezed correlation function of phi-phi and K+K- pairs at RHIC energies, plotted in terms of the average momentum of the pair, K12=(k1+k2)/2, inspired by procedures adopted in Hanbury-Brown & Twiss (HBT) correlations.

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