论文标题
在$ \ sqrt {s_ {s_ {nn}} = 3.0-5.0 $ \ sqrt collisisions in au+au碰撞中的净 - 巴里昂，净收入和杜特龙的累积物的光束能量依赖性= 3.0-5.0 $ gev
Beam energy dependence of cumulants of the net-baryon, net-charge and deuteron multiplicity distributions in Au+Au collisions at $\sqrt{s_{NN}}=3.0-5.0$ GeV
论文作者
论文摘要
在超相关的量子分子动力学（URQMD）模型中，考虑到洛伦兹的核均值处理核平均电位，在$ \ \ sqrt coltions中，Net-Baryon，Net-Charge和Deuterons多重分布的波动在Au+Au Head-On-On-On-On-On-on-On-on-On-on-on-on Coltionct中的波动计算。结果表明，核平均场电势可以显着提高狭窄速度窗口中巴属数量波动的大小，并且这种增强随着束能量的增加而迅速削弱。但是，对于质子和净电荷数波的波动，平均场效应不如BARYON数字明显。此外，对于净电荷数波的波动，负二项式分布与中符中窗口中的计算结果非常吻合。最后，还计算了依然生产图中Deuteron数量的事件波动，发现其累积比率随着每个事件的平均多样性的增加而降低，即随着束能量的增加，杜特龙的平均多样性。
Within the ultra-relativistic quantum molecular dynamics (UrQMD) model, in which the Lorentz-covariant treatment of nuclear mean-field potential is considered, the fluctuations of net-baryon, net-charge and deuterons multiplicity distributions in Au+Au head-on collisions at $\sqrt{s_{NN}}=3.0-5.0$ GeV are calculated. The results show that the nuclear mean-field potential can significantly enhance the magnitude of baryon number fluctuations in narrow rapidity windows, and this enhancement rapidly weakens with increasing beam energy. However, for proton and net-charge number fluctuations, the mean-field effects are less noticeable than that for baryon number. In addition, for net-charge number fluctuations, the negative binomial distribution agrees well with the calculated results at mid-pseudorapidity window. Finally, the event-by-event fluctuations of deuteron number in the coalescence production picture are calculated as well, it is found that its cumulant ratios decrease linearly with increasing the average multiplicity of deuterons per event, i.e., increase with increasing beam energy.
