arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1306.5741nucl-thnucl-ex
收藏

重离子碰撞中玻色子密度和温度的库仑修正

Coulomb corrections to density and temperature of bosons in heavy ion collisions

Hua Zheng, Gianluca Giuliani, Aldo Bonasera

摘要:

最近提出的方法,基于四极和多重性波动的重离子碰撞,修改,以考虑由于库仑场的扭曲。这对于在重离子碰撞中产生的玻色子,例如$d$和$α$粒子,特别有意义。我们推导出玻色子的温度和密度,并与费米子的类似计算进行比较。由此得到的能量密度彼此吻合得相当好,也与中子导出的能量密度吻合得相当好。这表明,一个共同的现象,如突然打开许多反应通道和/或液-气相变,是负责的协议。

英文摘要:

A recently proposed method, based on quadrupole and multiplicity fluctuations in heavy ion collisions, is modified in order to take into account distortions due to the Coulomb field. This is particularly interesting for bosons produced in heavy ion collisions, such as $d$ and $α$ particles. We derive temperatures and densities seen by the bosons and compare to similar calculations for fermions. The resulting energy densities agree rather well with each other and with the one derived from neutrons. This suggests that a common phenomenon, such as the sudden opening of many reaction channels and/or a liquid gas phase transition, is responsible for the agreement.

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。

↑