论文标题
旋转的电磁结构 - $ \ frac12 $ doubly Charmed Baryons in Lattice QCD
Electromagnetic Structure of Spin-$\frac12$ Doubly Charmed Baryons in Lattice QCD
论文作者
论文摘要
我们计算自旋的电磁特性-U \ frac12 $双重诱人的baryons在2+1个风味晶格上，其斜向质量为$ \ sim $ 156 MeV。除标准的各向同性三叶草动作外，还采用了Tsukuba动作，用于量化$ \ MATHCAL {O}（M_Q A）$效果。我们计算电气和磁性的形式，并提取磁矩以及电荷半径。我们还研究了单个夸克部门对电荷半径和磁矩的贡献。结果提供了重要的信息，以了解双重迷人的重子的大小和形状。我们发现，这两个重符夸克将电荷半径和磁矩驱动到比轻重子的值更小。使用魅力夸克（Charm Quark）获得的相对论动作获得的观察值的中心值比使用三叶草动作获得的相对论的$ 5 $至$ 10 \％$。利用可用的晶格数据，我们重新检查了观测值的夸克质量依赖性。
We compute the electromagnetic properties of spin-$\frac12$ doubly charmed baryons on 2+1 flavor lattices that have a pion mass of $\sim$ 156 MeV. The Tsukuba action is employed for the charm quark in addition to the standard isotropic Clover action to quantify the $\mathcal{O}(m_q a)$ effects. We calculate the electric and magnetic Sachs form factors and extract the magnetic moments and electric and magnetic charge radii. We also investigate the individual quark sector contributions to the charge radii and the magnetic moments. The results provide vital information to understand the size and shape of the doubly charmed baryons. We find that the two heavy charm quarks drive the charge radii and the magnetic moments to smaller values than that of light baryons. The central values of the observables that are obtained using the relativistic action for the charm quark are $5$ to $10\%$ larger than those obtained using the Clover action. Utilizing the available lattice data, we reexamine the quark mass dependence of the observables.
