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NSR database version of April 27, 2024.

Search: Author = D.Stefanik

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2018BA45      Phys.Rev. C 98, 065501 (2018)

A.Babic, D.Stefanik, M.I.Krivoruchenko, F.Simkovic

Bound-state double-β decay

RADIOACTIVITY ^46,48Ca, ⁷⁰Zn, ⁷⁶Ge, ^80,82Se, ⁸⁶Kr, ^94,96Zr, ^98,100Mo, ¹⁰⁴Ru, ¹¹⁰Pd, ^114,116Cd, ^122,124Sn, ^128,130Te, ^134,136Xe, ¹⁴²Ce, ^146,148,150Nd, ¹⁵⁴Sm, ¹⁶⁰Gd, ¹⁷⁰Er, ¹⁷⁶Yb, ¹⁸⁶W, ¹⁹²Os, ¹⁹⁸Pt, ²⁰⁴Hg, ²³²Th, ²³⁸U(2β^-); calculated Fermi sums, bound-state and standard decay phase-space factors, relative frequencies of bound-state to continuum-state decays for 0νββ and 2νββ decay modes. ⁴⁸Ca, ⁷⁶Ge, ⁸²Se, ⁹⁶Zr, ¹⁰⁰Mo, ¹¹⁰Pd, ¹¹⁶Cd, ¹²⁴Sn, ^128,130Te, ^134,136Xe, ¹⁵⁰Nd, ²³⁸U(2β^-); calculated nuclear matrix elements (NMEs) and half-lives for 0νββ and 2νββ decay modes. Bound-state two-neutrino and neutrinoless double-β decays. Calculations used multiconfiguration Dirac-Hartree-Fock package GRASP2K. Relevance to double-β decay experiment NEMO-3, SuperNEMO, and two-electron spectra in the calorimetric experiments CUORE, EXO-200 and GERDA.

doi: 10.1103/PhysRevC.98.065501
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2018SI06      Phys.Rev. C 97, 034315 (2018)

F.Simkovic, R.Dvornicky, D.Stefanik, A.Faessler

Improved description of the 2νββ-decay and a possibility to determine the effective axial-vector coupling constant

RADIOACTIVITY ⁴⁸Ca, ⁷⁶Ge, ⁸²Se, ⁹⁶Zr, ¹⁰⁰Mo, ¹¹⁰Pd, ¹¹⁶Cd, ¹²⁴Sn, ^128,130Te, ^134,136Xe, ¹⁵⁰Nd(2β^-); calculated phase-space factors for 2νββ and 0νββ decay modes using standard approximation of Doi et al., and the exact Dirac wave functions with finite nuclear size and electron screening, nuclear matrix elements (NMEs) and ratios of nuclear matrix elements for 2νββ and 0νββ decay modes within the pnQRPA with partial isospin restoration, half-lives for 2νββ-decays, running sum of the 2νββ-decay NMEs, partial and full differential decay rates, endpoints of the spectra of the differential decay rates for ⁸²Se and ¹⁰⁰Mo, nuclear matrix elements for ⁴⁸Ca, ⁷⁶Ge, ¹⁰⁰Mo, ¹¹⁶Cd, ¹²⁸Te from measured GT⁺ and GT^- strengths in charge-exchange reaction, and effective axial-vector coupling constant g_A for ¹⁰⁰Mo and ¹¹⁶Cd.

doi: 10.1103/PhysRevC.97.034315
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2015ST11      Phys.Rev. C 91, 064311 (2015)

D.Stefanik, F.Simkovic, A.Faessler

Structure of the two-neutrino double-β decay matrix elements within perturbation theory

doi: 10.1103/PhysRevC.91.064311
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2015ST19      Phys.Rev. C 92, 055502 (2015)

D.Stefanik, R.Dvornicky, F.Simkovic, P.Vogel

Reexamining the light neutrino exchange mechanism of the 0νββ decay with left- and right-handed leptonic and hadronic currents

RADIOACTIVITY ⁴⁸Ca, ⁷⁶Ge, ⁸²Se, ⁹⁶Zr, ¹⁰⁰Mo, ¹¹⁰Pd, ¹¹⁶Cd, ¹²⁴Sn, ¹³⁰Te, ¹³⁶Xe, ¹⁵⁰Nd(2β^-); calculated kinematical phase-space factors for 0νββ decay mode using exact Dirac wave functions of the s_1/2 and p_1/2 electrons with finite nuclear size and electron screening taken into account. Mechanism of exchange of a virtual light Majorana neutrino.

doi: 10.1103/PhysRevC.92.055502
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2013ST17      Phys.Rev. C 88, 025503 (2013)

D.Stefanik, F.Simkovic, K.Muto, A.Faessler

Two-neutrino double-β decay Fermi transition and two-nucleon interaction

doi: 10.1103/PhysRevC.88.025503
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