Effective axial-vector strength within proton-neutron deformed quasiparticle random-phase approximation
Delion, D. S., Dumitrescu, A., & Suhonen, J. (2019). Effective axial-vector strength within proton-neutron deformed quasiparticle random-phase approximation. Physical Review C, 100(2), Article 024331. https://doi.org/10.1103/PhysRevC.100.024331
Julkaistu sarjassa
Physical Review CPäivämäärä
2019Tekijänoikeudet
© 2019 American Physical Society
We use the available experimental Gamow-Teller β− and β+/EC (electron-capture) decay rates between 0+ and 1+ ground states in neighboring even-even and odd-odd nuclei, combined with 2νββ half-lives, to analyze the influence of the nuclear environment on the weak axial-vector strength gA. For this purpose, the proton-neutron deformed quasiparticle random-phase approximation (pn-dQRPA), with schematic dipole residual interaction is employed. The Hamiltonian contains particle-hole (ph) and particle-particle (pp) channels with mass-dependent strengths. In deriving the equations of motion we use a self-consistent procedure in terms of a single-particle basis with projected angular momentum provided by the diagonalization of a spherical mean field plus the quadrupole-quadrupole interaction. Our analysis evidenced a quenched average effective value ⟨gA⟩ ≈ 0.7 with a root-mean-square deviation of σ ≈ 0.3 for transitions from even-even emitters and σ ≈ 0.6 for transitions from odd-odd emitters.
...
Julkaisija
American Physical SocietyISSN Hae Julkaisufoorumista
2469-9985Asiasanat
Julkaisu tutkimustietojärjestelmässä
https://converis.jyu.fi/converis/portal/detail/Publication/32654836
Metadata
Näytä kaikki kuvailutiedotKokoelmat
Rahoittaja(t)
Suomen AkatemiaRahoitusohjelmat(t)
Akatemiahanke, SALisätietoja rahoituksesta
This work has been partially supported by grants of the Romanian Ministry of Research and Innovation, CNCSUEFISCDI, PN-III-P4-ID-PCE-2016-0092, PN-III-P4-DPCE-2016-0792, within PNCDI III, PN-19060105/2019, and by the Academy of Finland (Suomen Akatemia) under Academy Project No. 318043.Lisenssi
Samankaltainen aineisto
Näytetään aineistoja, joilla on samankaltainen nimeke tai asiasanat.
-
Statistical analysis of β decays and the effective value of gA in the proton-neutron quasiparticle random-phase approximation framework
Deppisch, Frank F.; Suhonen, Jouni (American Physical Society, 2016)We perform a Markov chain Monte Carlo (MCMC) statistical analysis of a number of measured groundstate-to-ground-state single β+/electron-capture and β− decays in the nuclear mass range of A = 62–142. The corresponding ... -
Unified description of 2+_1 states within the deformed quasiparticle random-phase approximation
Delion, Doru-Sabin; Suhonen, Jouni (American Physical Society, 2013)We describe low-lying collective states in deformed even-even nuclei within a deformed quasiparticle randomphase approximation (dQRPA) by using a single-particle basis with good angular momentum. The statistical factors, ... -
Neutral-current supernova-neutrino cross sections for 204,206,208Pb calculated by Skyrme quasiparticle random-phase approximation
Almosly, Wafa; Carlsson, B. G.; Suhonen, Jouni; Ydrefors, E. (American Physical Society, 2019)The present work constitutes a detailed study of neutral-current (NC) supernova-neutrino scattering off the stable even-even lead isotopes 204,206,208Pb. This is a continuation of our previous work [Almosly et al., Phys. ... -
Polarization corrections to single-particle energies studied within the energy-density-functional and quasiparticle random-phase approximation approaches
Tarpanov, D.; Toivanen, Jussi; Dobaczewski, Jacek; Carlsson, B. G. (American Physical Society, 2014)Background: Models based on using perturbative polarization corrections and mean-field blocking approxima- tion give conflicting results for masses of odd nuclei. Purpose: We systematically investigate the polarization ... -
Comparison of Microscopic Interacting Boson Model and Quasiparticle Random Phase Approximation 0νββ Decay Nuclear Matrix Elements
Kotila, Jenni (Frontiers Media SA, 2021)The fundamental nature of the neutrino is presently a subject of great interest. A way to access the absolute mass scale and the fundamental nature of the neutrino is to utilize the atomic nuclei through their rare decays, ...
Ellei toisin mainittu, julkisesti saatavilla olevia JYX-metatietoja (poislukien tiivistelmät) saa vapaasti uudelleenkäyttää CC0-lisenssillä.