论文标题
$υ$和$η_{b} $质量转移核物质和核心状态
$Υ$ and $η_{b}$ mass shifts in nuclear matter and the nucleus bound states
论文作者
论文摘要
$υ$和$η_b$以及$ b^*$ Meson质量变化（标量电位）在对称核问题上首次估计。主要兴趣是，在核物质饱和密度下几十MEV的范围内，底部 - 核物质和链核物质相互作用的优势是否相似或非常不同。这是因为，通常认为每个（$υ，j/ψ$）和（$η_c，η_b$）组基于重型魅力和底部夸克质量具有非常相似的属性。 $υ$的估计是使用SU（5）有效的拉格朗日密度进行的，通过研究$ bb $，$ bb^*$和$ b^*b^*$梅森环路为自由空间和核培养基中的自我能源提供贡献。结果，仅包括$ bb $ meson循环贡献作为我们的最低预测。至于$η_b$，仅包括$ bb^*$ meson循环在自我能源中的贡献，以与$υ$的最低预测一致。 $ b $和$ b^{*} $介子出现在自能环中的中等质量是由夸克 - 梅森耦合模型计算的。形式因素用于使循环积分与较大的截面质量值正规化。结果表明，$υ$和$η_b$都应形成界面状态，并在本研究中考虑各种核，为此，计算$υ$ -Nucleus和$η_b$ -nucleus bound bound bound State engunt state enguties。结果还显示了核核核核问题与链核物质相互作用强度之间的明显差异。还研究了$υ$和$η_b$质量转移，重物夸克（重膜）对称限制。此外，进行了一项初步研究，以研究选择形式对我们预测的影响。
The $Υ$ and $η_b$ as well as $B^*$ meson mass shifts (scalar potentials) are estimated for the first time in symmetric nuclear matter. The main interest is, whether or not the strengths of the bottomonium-nuclear matter and charmonium-nuclear matter interactions are similar or very different, in the range of a few tens of MeV at the nuclear matter saturation density. This is because, each ($Υ,J/Ψ$) and ($η_c,η_b$) meson group is usually assumed to have very similar properties based on the heavy charm and bottom quark masses. The estimate for the $Υ$ is made using an SU(5) effective Lagrangian density, by studying the $BB$, $BB^*$, and $B^*B^*$ meson loop contributions for the self-energy in free space and in nuclear medium. As a result, only the $BB$ meson loop contribution is included as our minimal prediction. As for the $η_b$, is included only the $BB^*$ meson loop contribution in the self-energy, to be consistent with the minimal prediction for the $Υ$. The in-medium masses of the $B$ and $B^{*}$ mesons appearing in the self-energy loops are calculated by the quark-meson coupling model. Form factors are used to regularize the loop integrals with a wide range of the cutoff mass values. The results suggest that both $Υ$ and $η_b$ should form bound states with a variety of nuclei considered in this study, for which the $Υ$-nucleus and $η_b$-nucleus bound state energies are calculated. The results also show an appreciable difference between the bottomonium-nuclear matter and charmonium-nuclear matter interaction strengths. Are also studied the $Υ$ and $η_b$ mass shifts in a heavy quark (heavy meson) symmetry limit. In addition, an initial study was done to investigate the influence of the choice of the form factor on our predictions.
