论文标题
底部的顺序抑制和重型离子碰撞中强烈的夸克潜力
Bottomonium sequential suppression and strong heavy-quark potential in heavy-ion collisions
论文作者
论文摘要
我们采用具有不同复杂潜力的时间依赖性schrödinger方程来研究$ \ sqrt {s_ {nn}} = 2.76 $ tev和5.02 tev和5.02 tev and au-au碰撞的PB-PB碰撞底部抑制。在重型夸克电势的真实和虚构部分中，都考虑了色彩筛选效果和随机散射。由于夸克潜力的实际部分是在自由能$ f（t，r）$和内部能量$ u（t，r）$ y（t，r）$之间，我们通过$ f $ and $ f $和$ u $的函数来进化媒介中的底蒙波波包。我们发现，当电势的实际部分接近$ u（t，r）$时，它可以很好地解释底部顺序抑制的模式，其中其核修饰因素满足关系$ r_ {aa}（1S）> r_ {aa}（aa}（aa}（2S）> r_ {aa}（aa}（3S））$。在$ f（t，r）$的另一个限制中，由于吸引力较弱，底部波浪套件往往会扩大，从而导致明显的过渡从$υ（2s）$到$υ（3S）$组件，并且不满足顺序抑制模式。我们建议底部顺序抑制可能是培养基中强烈夸克电势的探针。
We employ the time-dependent Schrödinger equation with different complex potentials to study the bottomonium sequential suppression in Pb-Pb collisions at $\sqrt{s_{NN}}=2.76$ TeV and 5.02 TeV and Au-Au collisions at $\sqrt{s_{NN}}=200$ GeV. Both color screening effect and the random scatterings with thermal partons are considered in the real and imaginary parts of the heavy-quark potentials. As the real part of the heavy-quark potential is between the free energy $F(T,r)$ and the internal energy $U(T,r)$ of heavy quarkonium, we parametrize different potentials with a function of $F$ and $U$ to evolve the bottomonium wave packages in the medium. We find that when the real part of the potential is close to $U(T,r)$, it can explain well the pattern of bottomonium sequential suppression where their nuclear modification factors satisfy the relation $R_{AA}(1s)>R_{AA}(2s)>R_{AA}(3s)$ observed in experiments. In the other limit of $F(T,r)$, bottomonium wave packages tend to expand due to weak attracted force, which results in evident transitions from $Υ(2s)$ to $Υ(3s)$ components and does not satisfy the sequential suppression pattern. We suggest that the bottomonium sequential suppression can be a probe of strong heavy-quark potential in the medium.
