论文标题
巴里昂的反相关和毕田的保利原则
Baryon anticorrelations and the Pauli principle in PYTHIA
论文作者
论文摘要
我们对近年来的强子碰撞问题（Baryon抗相关性）进行了计算研究。这是相位空间中其他重子附近的重子的实验缺乏，在检查数值蒙特卡洛模拟时未见。我们已经谈到了最著名的蒙特卡洛代码之一毕田（Pythia），以查看其产生的baryon（抗）相关性，这些相关性是在基础隆德模型中起源于字符串碎片级别的，以及什么简单修改可以导致与数据更好的一致性。我们提出了对碎片化代码的两个临时变化，一个“一巴里昂”和一个“始终 - 巴里昂”政策，这些政策在质量上重现了数据行为，即反相关，并表明在计算和实验之间缺乏Pauli-inciple诱导的校正可能是当前的不适的罪魁祸首。
We present a computational investigation of a problem of hadron collisions from recent years, that of baryon anticorrelations. This is an experimental dearth of baryons near other baryons in phase space, not seen upon examining numerical Monte Carlo simulations. We have addressed one of the best known Monte Carlo codes, PYTHIA, to see what baryon (anti)correlations it produces, where they are originated at the string-fragmentation level in the underlying Lund model, and what simple modifications could lead to better agreement with data. We propose two ad-hoc alterations of the fragmentation code, a "one-baryon" and an "always-baryon" policies that qualitatively reproduce the data behaviour, i.e anticorrelation, and suggest that lacking Pauli-principle induced corrections at the quark level could be the culprit behind the current disagreement between computations and experiment.
