Two-neutrino double-beta decay in the mapped interacting boson model

Znanstveni rad - Izvorni znanstveni rad

• Autor: Kosuke Nomura https://orcid.org/0000-0001-7663-6775
• Autorova ustanova: Sveučilište u Zagrebu; Prirodoslovno-matematički fakultet; (Fizički odsjek); (Zavod za teorijsku fiziku)
• Znanstveno / umjetničko područje, polje i grana: PRIRODNE ZNANOSTI; Fizika; Nuklearna fizika

Sažetak (engleski)

A calculation of two-neutrino double- β ( 2 ν β β ) decay matrix elements within the interacting boson model (IBM) that is based on the nuclear density functional theory is presented. The constrained self-consistent mean-field (SCMF) calculation using a universal energy density functional (EDF) and a pairing interaction provides potential energy surfaces with triaxial quadrupole degrees of freedom for even-even nuclei corresponding to the initial and final states of the 2 ν β β decays of interest. The SCMF energy surface is then mapped onto the bosonic one, and this procedure determines the IBM Hamiltonian for the even-even nuclei. The same SCMF calculation provides the essential ingredients of the interacting boson fermion-fermion model (IBFFM) for the intermediate odd-odd nuclei and the Gamow-Teller and Fermi transition operators. The EDF-based IBM and IBFFM provide a simultaneous description of excitation spectra and electromagnetic transition rates for each nucleus, and single- β and β β decay properties. The calculated 2 ν β β -decay nuclear matrix elements are compared with experiment and with those from earlier theoretical calculations.

• Ključne riječi (engleski): double beta decay, beta decay, nuclear structure
• Jezik: engleski
• Vrsta publikacije: Znanstveni rad - Izvorni znanstveni rad
• Status objave: Objavljen
• Vrsta recenzije: Recenziran - međunarodna recenzija
• Verzija publikacije: Objavljena verzija rada (izdavačev PDF)
• Naslov časopisa: Physical Review C
• Brojčani podaci: vol. 105, br. 4, str. 044301-1-044301-27, 27
• p-ISSN: 2469-9985
• e-ISSN: 2469-9993
• DOI: https://doi.org/10.1103/PhysRevC.105.044301
• URN:NBN: urn:nbn:hr:217:440222
• Datum objave publikacije: 2022
• Projekt: Šifra: TTP-2018-07-3554; Naziv (hrvatski): Exotic Nuclear Structure and Dynamics; Naziv (engleski): Exotic Nuclear Structure and Dynamics; Kratica: ExoNSD; Voditelj: Kosuke Nomura; Pravna nadležnost: Hrvatska; Financijer: HRZZ; Linija financiranja: TTP
• URL dokumenta: https://link.aps.org/doi/10.1103/PhysRevC.105.044301
• Vrsta resursa: Tekst
• Prava pristupa: Ograničen pristup
• Datum i vrijeme pohrane: 2022-09-10 10:59:43