Nuclear ${\beta }^{+}$/EC decays in covariant density functional theory and the impact of isoscalar proton-neutron pairing

Abstract

Self-consistent proton-neutron quasiparticle random phase approximation based on the spherical nonlinear point-coupling relativistic Hartree-Bogoliubov theory is established and used to investigate the ${\beta }^{+}$/EC-decay half-lives of neutron-deficient Ar, Ca, Ti, Fe, Ni, Zn, Cd, and Sn isotopes. The isoscalar proton-neutron pairing is found to play an important role in reducing the decay half-lives, which is consistent with the same mechanism in the $\beta$ decays of neutron-rich nuclei. The experimental ${\beta }^{+}$/EC-decay half-lives can be well reproduced by a universal isoscalar proton-neutron pairing strength.

arXiv comment12 pages, 4 figures

References in corpus (34)

• New parametrization for the nuclear covariant energy density functional with point-coupling interaction
• Relativistic Nuclear Energy Density Functionals: Mean-Field and Beyond
• Nuclear weak-interaction processes in stars
• Relativistic Nuclear Energy Density Functionals: adjusting parameters to binding energies
• Tests of the standard electroweak model in beta decay
• Where, oh where has the r-process gone?
• Nuclear Ground State Observables and QCD Scaling in a Refined Relativistic Point Coupling Model
• Beta decay of r-process waiting-point nuclei in a self-consistent approach
• Density-Dependent Relativistic Hartree-Fock Approach
• Shell Structure and $\rho$-Tensor Correlations in Density-Dependent Relativistic Hartree-Fock theory
• Quasiparticle random phase approximation based on the relativistic Hartree-Bogoliubov model II: Nuclear spin and isospin excitations
• Half Life of the Doubly-magic r-Process Nucleus 78Ni
• Spin-isospin resonances: A self-consistent covariant description
• $\beta$-decay half-lives of neutron-rich nuclei and matter flow in the $r$-process
• Isospin corrections for superallowed Fermi beta decay in self-consistent relativistic random phase approximation approaches
• Relativistic Hartree-Fock-Bogoliubov theory with Density Dependent Meson-Nucleon Couplings
• Deformation of the N=Z nucleus 76Sr using beta-decay studies
• Nuclear halo structure and pseudo-spin symmetry
• Beta-decay rates of r-process nuclei in the relativistic quasiparticle random phase approximation
• Application of the RMF mass model to the r-process and the influence of mass uncertainties
• Calculation of beta-decay rates in a relativistic model with momentum-dependent self-energies
• Rapid structural change in low-lying states of neutron-rich Sr and Zr isotopes
• Influence of nuclear physics inputs and astrophysical conditions on Th/U chronometer
• Beta-decay properties of Zr and Mo neutron-rich isotopes
• Feasibility of the finite amplitude method in covariant density functional theory
• Stellar weak decay rates in neutron-deficient medium-mass nuclei
• Localized form of Fock terms in nuclear covariant density functional theory
• Fine structure of charge-exchange spin-dipole excitations in ${}^{16}$O
• The Slater approximation for Coulomb exchange effects in nuclear covariant density functional theory
• beta-decay in neutron-deficient Hg, Pb, and Po isotopes
• Relativistic RPA for Isobaric Analogue and Gamow-Teller Resonances in Closed Shell Nuclei
• Nuclear shape dependence of Gamow-Teller distributions in neutron-deficient Pb isotopes
• Random-phase approximation based on relativistic point-coupling models
• Chiral pion-nucleon dynamics in finite nuclei: spin-isospin excitations

Cited by in corpus (20)

• Predictions of nuclear $\beta$-decay half-lives with machine learning and their impacts on $r$ process
• Self-consistent relativistic quasiparticle random-phase approximation and its applications to charge-exchange excitations and $\beta$-decay half-lives
• Global dynamical correlation energies in covariant density functional theory: cranking approximation
• Radial basis function approach in nuclear mass predictions
• Probing the resonance of Dirac particle by the application of complex momentum representation
• Pairing transitions in the finite-temperature relativistic Hartree-Bogoliubov theory
• Improved radial basis function approach with the odd-even corrections
• Quasi-particle random phase approximation with quasi-particle-vibration coupling: application to the Gamow-Teller response of the superfluid nucleus ${}^{120}$Sn
• Probing the resonance in the Dirac equation with quadruple-deformed potentials by complex momentum representation method
• Nuclear $\beta$-decay half-lives in the relativistic point-coupling model
• Microscopic core-quasiparticle coupling model for spectroscopy of odd-mass nuclei with octupole correlations
• Nuclear charge-exchange excitations based on relativistic density-dependent point-coupling model
• Coupling of shape and pairing vibrations in a collective Hamiltonian based on nuclear energy density functionals
• Combination of complex momentum representation and Green's function methods in relativistic mean-field theory
• Gamow-Teller and double-beta decays of heavy nuclei within an effective theory
• Nuclear mass predictions based on convolutional neural network
• The Neutron Star Outer Crust Equation of State: A Machine Learning approach
• Gamow-Teller transitions from high-spin isomers in $N=Z$ nuclei
• Evolution of $N=28$ shell closure in relativistic continuum Hartree-Bogoliubov theory
• Impact of the nuclear mass uncertainties on the r process