标题： charm介子在核碰撞中的抑制的定量分析 显示英文标题

标题： A Quantitative Analysis of Charmonium Suppression in Nuclear Collisions

摘要： 用于确定核物质中预共振态底重夸克的吸收截面的数据来自质子-原子核碰撞中的J/psi和psi'产生。 在O-Cu、O-U和S-U碰撞中观察到的J/psi抑制完全由相应的核吸收再现，而Pb-Pb碰撞显示出随着中心性增加的额外抑制。 我们通过强子共存相互作用来研究这种变化的开始，并得出结论，迄今为止没有传统的强子描述能够一致地解释所有数据。 从由中心S-U碰撞确定的临界点开始的禁闭解除与观察到的抑制模式一致。 显示英文摘要

摘要： Data from J/psi and psi' production in p-A collisions are used to determine the cross section for absorption of pre-resonance charmonium in nuclear matter. The J/psi suppression in O-Cu, O-U and S-U collisions is fully reproduced by the corresponding nuclear absorption, while Pb-Pb collisions show an additional suppression increasing with centrality. We study the onset of this change in terms of hadronic comover interactions and conclude that so far no conventional hadronic description can consistently account for all data. Deconfinement, starting at a critical point determined by central S-U collisions, is in accord with the observed suppression pattern.