Next-to-leading-order QCD corrections to the radiative decays ${\chi }_{bJ}\to J/\psi +\gamma$

Yu-Dong Zhang, Zai-Fu Jiang

Within nonrelativistic QCD (NRQCD) factorization, we calculate the next-to-leading-order (NLO) QCD corrections to ${\chi }_{bJ}\to J/\psi +\gamma$ with $J=0,1,2$. We determine all six independent…