Xiang Li

Next-to-leading order QCD corrections to fully charm tetraquark radiative decays

We present the first complete next-to-leading-order (NLO) QCD calculation of the fully charm tetraquark radiative decays $T_{4c}(0^{++},2^{++})\to\gamma J/\psi$ and $T_{4c}(1^{+-})\to\gamma\eta_c$ at leading order in the relative velocity. The NLO widths are $2.3$--$3.1$ times the leading-order (LO) widths for the long...