@article{Nakayama:2020U2, author = "Nakayama, Katsumasa and Ishikawa, Tsutomu and Hashimoto, Shoji", title = "{Charmonium contribution to $B \to K l^+l^-$: testing the factorization approximation on the lattice}", doi = "10.22323/1.363.0062", journal = "PoS", year = 2020, volume = "LATTICE2019", pages = "062" }