Competition between weak and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>α</mml:mi></mml:math> -decay modes in superheavy nuclei

The competition between alpha- and beta+/EC-decay modes is studied systematically in nuclei along the alpha-decay chains following synthesis of superheavy with Z = 119 120. A microscopic approach based on deformed self-consistent Hartree-Fock mean-field calculations Skyrme forces pairing correlations used to describe beta+ electron capture weak decays, whereas estimated from existing phenomenological expressions. It shown that most cases dominant decay mode, but interesting instances are identified where half-lives comparable, opening possibility new pathways towards more neutron-rich this region.