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Evidence for Rigid Triaxial Deformation in
Ayangeakaa, A D; Janssens, R V F; Zhu, S; Little, D; Henderson, J; Wu, C Y; Hartley, D J; Albers, M; Auranen, K; Bucher, B; Carpenter, M P; Chowdhury, P; Cline, D; Crawford, H L; Fallon, P; Forney, A M; Gade, A; Hayes, A B; Kondev, F G; Lauritsen, T; Li, J; Macchiavelli, A O; Rhodes, D; Seweryniak, D; Stolze, S M; Walters, W B; Wu, J.
Afiliação
  • Ayangeakaa AD; Department of Physics, United States Naval Academy, Annapolis, Maryland 21402, USA.
  • Janssens RVF; Department of Physics and Astronomy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA.
  • Zhu S; Triangle Universities Nuclear Laboratory, Duke University, Durham, North Carolina 27708, USA.
  • Little D; Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA.
  • Henderson J; Department of Physics and Astronomy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA.
  • Wu CY; Triangle Universities Nuclear Laboratory, Duke University, Durham, North Carolina 27708, USA.
  • Hartley DJ; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Albers M; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Auranen K; Department of Physics, United States Naval Academy, Annapolis, Maryland 21402, USA.
  • Bucher B; Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA.
  • Carpenter MP; Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA.
  • Chowdhury P; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Cline D; Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA.
  • Crawford HL; Department of Physics and Applied Physics, University of Massachusetts Lowell, Lowell, Massachusetts 01854, USA.
  • Fallon P; Department of Physics and Astronomy, University of Rochester, Rochester, New York 14627, USA.
  • Forney AM; Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.
  • Gade A; Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.
  • Hayes AB; Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, USA.
  • Kondev FG; National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA.
  • Krishichayan; Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA.
  • Lauritsen T; Department of Physics and Astronomy, University of Rochester, Rochester, New York 14627, USA.
  • Li J; Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA.
  • Macchiavelli AO; Triangle Universities Nuclear Laboratory, Duke University, Durham, North Carolina 27708, USA.
  • Rhodes D; Department of Physics, Duke University, Durham, North Carolina 27708, USA.
  • Seweryniak D; Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA.
  • Stolze SM; Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA.
  • Walters WB; Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.
  • Wu J; National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA.
Phys Rev Lett ; 123(10): 102501, 2019 Sep 06.
Article em En | MEDLINE | ID: mdl-31573317
ABSTRACT
An extensive, model-independent analysis of the nature of triaxial deformation in ^{76}Ge, a candidate for neutrinoless double-beta (0νßß) decay, was carried out following multistep Coulomb excitation. Shape parameters deduced on the basis of a rotational-invariant sum-rule analysis provided considerable insight into the underlying collectivity of the ground-state and γ bands. Both sequences were determined to be characterized by the same ß and γ deformation parameter values. In addition, compelling evidence for low-spin, rigid triaxial deformation in ^{76}Ge was obtained for the first time from the analysis of the statistical fluctuations of the quadrupole asymmetry deduced from the measured E2 matrix elements. These newly determined shape parameters are important input and constraints for calculations aimed at providing, with suitable accuracy, the nuclear matrix elements relevant to 0νßß.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2019 Tipo de documento: Article
Texto completo
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2019 Tipo de documento: Article