arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0912.2855hep-ph
收藏

LHC pp碰撞中强子丰度的预测

Predictions of hadron abundances in pp collisions at the LHC

F. Becattini, P. Castorina, A. Milov, H. Satz

摘要:

基于统计强子化模型,我们得到了在LHC pp碰撞中强子种类相对丰度的定量预测。通过使用在sqrt s = 200 GeV的模型确定的参数,并外推的整体归一化从PPbar碰撞在SPS和Tevatron,我们发现,预期的快度密度几乎是巨正则的。因此,在LHC上,只要强子化温度T_H和奇异抑制因子γ_S保持在目前所研究的pp和ppbar碰撞范围内的稳定值,不同粒子之间的比值就变得基本上与能量无关。

英文摘要:

Based on the statistical hadronization model, we obtain quantitative predictions for the relative abundances of hadron species in pp collisions at the LHC. By using the parameters of the model determined at sqrt s = 200 GeV, and extrapolating the overall normalization from ppbar collisions at the SPS and Tevatron, we find that the expected rapidity densities are almost grand-canonical. Therefore, at LHC the ratios between different species become essentially energy-independent, provided that the hadronization temperature T_H and the strangeness suppression factor gamma_S retain the stable values observed in the presently explored range of pp and ppbar collisions.

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。

↑