Composite nature of a particle can be probed by electromagnetic interactions and information about their structure is embedded in form factors. Most of the experimental and theoretical efforts on baryon electromagnetic form factors have been focused on nucleon while the data on charmed sector are limited to spectroscopy, and weak and strong decays. Forthcoming experiments with a heavy-hadron physics program at major experimental facilities are expected to provide a wealth of information on charmed baryons, which calls for a better understanding of the heavy-sector dynamics from theoretical grounds. We review the progress in calculating the elastic and transition form factors of charmed baryons in lattice QCD. A collection of static observables, e.g. charge radii, multipole moments, are presented along with the elastic form factors up to Q2 ∼ 1.5GeV2. As one would expect the charmed baryons are compact in comparison to nucleon and this is due to the presence of valence charm quark(s). The elastic and transition magnetic moments are both suppressed. The lattice results provide predictions for the transition magnetic moments, transition and helicity amplitudes and consequentially the decay widths of some singly and doubly charmed baryons. In general, lattice results are consonant with the qualitative expectations of quark model and heavy-quark symmetry, although there are apparent quantitative differences up to two orders of magnitude in some cases. There are, however, indications that the lattice results can be utilized to improve the model predictions. Nevertheless, discrepancies between the lattice and nonlattice calculations need to be understood better to have a solid insight into the dynamics of the heavy sector. Furthermore, reliably determined charmed baryon observables would be invaluable input to investigate the nature of exotic states, which further emphasizes the importance of rigorous, first-principles calculations to advance our understanding of the dynamics of the heavy quarks and strong interactions.

中文翻译：

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格子 QCD 研究迷人重子的弹性和过渡形式因子

粒子的复合性质可以通过电磁相互作用进行探测，并且有关其结构的信息嵌入在形状因子中。大多数关于重子电磁形式因子的实验和理论工作都集中在核子上，而粲扇区的数据仅限于光谱学，以及弱衰变和强衰变。即将在主要实验设施中进行的重强子物理计划实验预计将提供大量关于迷人重子的信息，这需要从理论基础上更好地理解重粒子动力学。我们回顾了计算晶格QCD中粲重子的弹性和过渡形式因子的进展。一组静态可观察量，例如电荷半径、多极矩，连同弹性形状因子一起呈现问2 ～ 1.5锗钒2. 正如人们所期望的那样，与核子相比，迷人的重子是紧凑的，这是由于存在价魅力夸克。弹性和过渡磁矩均被抑制。晶格结果提供了对跃迁磁矩、跃迁和螺旋幅度的预测，进而预测了一些单粲和双粲重子的衰变宽度。总的来说，晶格结果与夸克模型和重夸克对称性的定性预期是一致的，尽管在某些情况下存在明显的数量差异高达两个数量级。然而，有迹象表明晶格结果可用于改进模型预测。尽管如此，需要更好地理解晶格和非晶格计算之间的差异，以便深入了解重工业的动态。此外，可靠确定的粲重子可观测量将是研究奇异态性质的宝贵投入，这进一步强调了严格的第一性原理计算对于促进我们对重夸克和强相互作用动力学的理解的重要性。