论文标题
在核介质中，八位位，解剖，低洼魅力和低洼底部的磁矩
Magnetic moments of the octet, decuplet, low-lying charm, and low-lying bottom baryons in a nuclear medium
论文作者
论文摘要
我们使用Quark-Meson耦合（QMC）模型研究了八位位，解剖，低洼的魅力和低洼的底部的磁矩，在对称核物质中具有非零光夸克，这满足了$ y $ - $ y的$ - Scal $^$^$^$^的限制（允许最大变化（膨胀）。 $^{56} $ fe $（e，e'）$。目前的QMC模型还满足了预期的核物质中核子磁矩的最大增强。此外，已经证明，计算出的在QMC模型中计算出的中等内部与质子电磁形式（EMFF）的比率，很好地重现了从$^4 {\ rm He}（\ rm He}（\ \ vec {e}，e'\ vec {p}）的质子EMFF超级比率。通过评估中等空间内的磁矩的介质修饰，可以估计巴里昂的磁矩比，以补偿MIT袋缺乏症，以描述MIT袋的缺乏症，以描述自由空间八位八元磁磁矩，在这种情况下，通常在实验中直接测量了比率，即使不知道绝对值，例如自由度和bound of proton Electon Electon form of form of form off _ $ contucto $ $ contim $ nourment of $ fort_ unory $ uniquoration $ untim $ cruncortion $ ycortoy $ cruncortion $ cratecon（Emc）$ cartection（Emc）$ cart（emc）通过相应的横截面比率与游离核子结合的。我们还介绍了奇怪和底部夸克的不同当前夸克质量值计算的结果，以查看可能的影响。 Furthermore, for a practical use, we give the explicit density dependent parametrizations for the vector potentials of the baryons and light-$(u, d)$ quarks, as well as for the effective masses of the baryons treated in this study, and of the mesons, $ω,ρ,K,K^*,η,η',D,D^*,B$, and $B^*$.
We study the magnetic moments of the octet, decuplet, low-lying charm, and low-lying bottom baryons with nonzero light quarks in symmetric nuclear matter using the quark-meson coupling (QMC) model, which satisfies the constraint for the allowed maximum change (swelling) of the in-medium nucleon size derived from the $y$-scaling data for $^3$He$(e,e')$ and $^{56}$Fe$(e,e')$. The present QMC model also satisfies the expected allowed maximum enhancement of the nucleon magnetic moments in nuclear matter. Moreover, it has been proven that the calculated in-medium to free proton electromagnetic form factor (EMFF) ratios calculated within the QMC model, reproduce well the proton EMFF super ratio extracted from $^4{\rm He}(\vec{e},e'\vec{p})^3{\rm H}$ at Jefferson Laboratory (JLab). The medium modifications of the magnetic moments are estimated by evaluating the in-medium to free space baryon magnetic moment ratios to compensate the MIT bag deficiency to describe the free space octet baryon magnetic moments, where ratios are often measured directly in experiments even without knowing the absolute values, such as the free and bound proton electromagnetic form factors, as well as the European Muon Collaboration (EMC) effect to extract the structure function $F_2$ ratio of the bound to free nucleons by the corresponding cross section ratio. We also present the results calculated with the different current quark mass values for the strange and bottom quarks to see the possible impact. Furthermore, for a practical use, we give the explicit density dependent parametrizations for the vector potentials of the baryons and light-$(u, d)$ quarks, as well as for the effective masses of the baryons treated in this study, and of the mesons, $ω,ρ,K,K^*,η,η',D,D^*,B$, and $B^*$.
