Measurements of the mass difference m(B$^{0}$) − m(B$^{+}$) and the energy dependence of the cross-section ratio $\sigma ({e}^{+}{e}^{-}\to {B}^{0}{\overline{B} }^{0})/\sigma ({e}^{+}{e}^{-}\to {B}^{+}{B}^{-})$ at Belle and Belle II
M. Abumusabh, I. Adachi, L. Aggarwal, H. Ahmed et autres
it (code pays fourni par la source)