2025/05/27 by Q. Liu, Liu, Qingyang, Jiang, Xiangyu +6
Physics and Astronomy · #Quantum Chromodynamics and Particle Interactions #Physics of Superconductivity and Magnetism #High-Energy Particle Collisions Research
paper · pdf · doi:10.48550/arxiv.2505.21193
The charm quark density-density correlation is calculated for 1S and 1P conventional charmonia and JPC=1-+,0+- charmoniumlike states from lattice QCD and are interpreted as spatial wave functions of these states with some approximations. The angular distributions of cc in conventional charmonia are found to be in accordance with the expectation of two-body systems, while that of the 1-+ state exhibits an S-wave feature. However, the cc radial distributions turn out to be strikingly different from the non-relativistic quark model and can be understood by the Dirac theory of two-body bound states. These results provide the first gauge invariant and model-independent three-dimensional portraits of charmonium(like) states.