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NSR database version of April 29, 2024.

Search: Author = J.Hyvarinen

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2016HY01      Phys.Rev. C 93, 064306 (2016)

J.Hyvarinen, J.Suhonen

Neutrinoless ββ decays to excited 0⁺ states and the Majorana-neutrino mass

RADIOACTIVITY ⁷⁶Ge, ⁸²Se, ⁹⁶Zr, ¹⁰⁰Mo, ¹¹⁰Pd, ¹¹⁶Cd, ¹²⁴Sn, ¹³⁰Te, ¹³⁶Xe(2β^-); calculated nuclear matrix elements (NMEs), nuclear-structure coefficients for 0νββ decay for ground-state to excited-state transitions, proton-neutron quasiparticle random-phase approximation (pn-QRPA), charge-conserving QRPA (ccQRPA), multiple-commutator model (MCM), light Majorana-exchange, heavy Majorana-exchange, isospin symmetry restoration, QRPA multipole decompositions of the nuclear matrix elements. Comparison with IBM-2 calculations.

NUCLEAR STRUCTURE ⁷⁶Se, ⁸²Kr, ⁹⁶Mo, ¹⁰⁰Ru, ¹¹⁰Cd, ¹¹⁶Sn, ¹²⁴Te, ¹³⁰Xe, ¹³⁶Ba; calculated 0+ and 2+ states, first 4+ states, B(E2) for first 2+ and 4+ states, effective charges using QRPA and two-phonon model. Comparison with experimental values.

doi: 10.1103/PhysRevC.93.064306
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2015HY01      Phys.Rev. C 91, 024613 (2015)

J.Hyvarinen, J.Suhonen

Nuclear matrix elements for 0νββ decays with light or heavy Majorana-neutrino exchange

RADIOACTIVITY ⁷⁶Ge, ⁸²Se, ⁹⁶Zr, ¹⁰⁰Mo, ¹¹⁰Pd, ¹¹⁶Cd, ¹²⁴Sn, ^128,130Te, ¹³⁶Xe(2β^-); calculated nuclear matrix elements for neutrinoless double beta (0νββ) decay, QRPA multipole decompositions of the nuclear matrix elements for ground state to ground state decays mediated by Light- and heavy-Majorana exchange, effects of the isospin symmetry restoration. Proton-neutron quasiparticle random-phase approximation (pn-QRPA) approach, with two-nucleon interactions based on the Bonn one-boson-exchange G matrix.

doi: 10.1103/PhysRevC.91.024613
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2015HY02      Phys.Rev. C 91, 054308 (2015)

J.Hyvarinen, J.Suhonen

Recursive method for computing matrix elements for two-body interactions

RADIOACTIVITY ⁴⁸Ca, ⁷⁶Ge, ⁸²Se(2β^-); calculated 0νββ two-body matrix elements (TBME) using Horie and Sasaki computational methods, radial integrals, recursive relations. Application of method to general nuclear structure calculations.

doi: 10.1103/PhysRevC.91.054308
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