标题： 高能核碰撞中的重粒子共振产生 显示英文标题

标题： Heavy resonance production in high energy nuclear collisions

摘要： 我们估计高能核碰撞中$s$、$c$和$b$夸克的冻结条件。 冻结要么是由于热接触的丧失，要么是粒子“离开”热物质区域。 然后我们开发了一个热重结合模型，在该模型中，单粒子（夸克和反夸克）和双粒子（夸克-反夸克）密度都得到保持。 双粒子密度的保持是必要的，因为夸克和反夸克总是同时产生，因此局部双粒子密度可能远大于单粒子密度的乘积。 我们利用冻结条件和重结合模型来讨论高能核碰撞中零重子密度下的重共振态产生。 显示英文摘要

摘要： We estimate freezeout conditions for $s$, $c$, and $b$ quarks in high energy nuclear collisions. Freezeout is due either to loss of thermal contact, or to particles ``wandering'' out of the region of hot matter. We then develop a thermal recombination model in which both single-particle (quark and antiquark) and two-particle (quark-antiquark) densities are conserved. Conservation of two-particle densities is necessary because quarks and antiquarks are always produced in coincidence, so that the local two-particle density can be much larger than the product of the single-particle densities. We use the freezeout conditions and recombination model to discuss heavy resonance production at zero baryon density in high energy nuclear collisions.