Configuration-interaction calculation of hyperfine and P,T-odd constants on ²⁰⁷PbO excited states for electron electric-dipole-moment experiments

We report first configuration interaction calculations of hyperfine constants A_‖ and the effective electric field W_d acting on the electric-dipole moment of the electron, in two excited electronic states of ²⁰⁷PbO. A combined scheme of correlation calculations is also developed and applied to studying the core properties. The obtained hyperfine constants, A_‖=−3826 MHz for the a(1) state and A_‖=4887 MHz for the B(1) state, are in very good agreement with the experimental data, −4113 MHz and 5000±200 MHz, respectively. We find W_d=−(6.1_−0.6^+1.8)×10²⁴ Hz∕(e cm) for a(1), and W_d=−(8.0±1.6)×10²⁴ Hz∕(e cm) for B(1).