Extended Data Fig. 6: Calculated electron–positron contact densities and positron lifetimes with respect to annihilation for nucleobases.
From: Many-body theory of positron binding to polyatomic molecules
a, Fractional contribution of individual molecular orbitals to the total electron–positron contact density (equation (6)). b, Table of positron lifetimes with respect to annihilation. τ(0): lifetime calculated in the Hartree–Fock independent particle approximation excluding the vertex enhancement factors and using a positron wavefunction normalized to unity; τGW and τMBT: lifetime calculated using the Dyson positron wavefunction at the ΣGW and gΣ(2) + Σ(Λ) levels for g = 1.4 and 1.5 including vertex enhancement factors and renormalization constants (equations (6), (7)).
