6533b7d1fe1ef96bd125d765
RESEARCH PRODUCT
Two-photon transitions of charmonia on the light front
Yang LiMeijian LiJames P. Varysubject
Nuclear Theory (nucl-th)High Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)Nuclear TheoryFOS: Physical sciencesHigh Energy Physics::Experimenthiukkasfysiikka114 Physical sciencesdescription
We investigate the two-photon transitions $H_{c\bar c} \to \gamma^*\gamma$ of the charmonium system in light-front dynamics. The light-front wave functions were obtained from solving the effective Hamiltonian based on light-front holography and one-gluon exchange interaction within the basis light-front quantization approach. We compute the two-photon transition form factors as well as the two-photon decay widths for S- and P-wave charmonia, $\eta_c$ and $\chi_{cJ}$ and their excitations. Without introducing any free parameters, our predictions are in good agreement with the recent experimental measurements by BaBar and Belle, shedding light on the relativistic nature of charmonium.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2022-04-11 |