Radiative transition decay width of ${\psi }_2(3823)\to \gamma {\chi }_{c1}$ from lattice QCD

Ning Li, Yan Gao, Feiyu Chen +4

We present an exploratory $N_f=2$ lattice QCD study of ${\psi }_2(3823)\to \gamma {\chi }_{c1}$ at a pion mass $m_{\pi }\approx 350$~MeV. The related two-point and three-piont functions are calculated us…