Bulletin of the American Physical Society
5th Joint Meeting of the APS Division of Nuclear Physics and the Physical Society of Japan
Volume 63, Number 12
Tuesday–Saturday, October 23–27, 2018; Waikoloa, Hawaii
Session MN: Mini-Symposium Intersections of Neutrino Physics and Nuclear Physics II
2:00 PM–4:00 PM,
Saturday, October 27, 2018
Hilton
Room: Kohala 4
Chair: David Radford, Oak Ridge National Laboratory
Abstract ID: BAPS.2018.HAW.MN.2
Abstract: MN.00002 : Double Gamow Teller transition and its relation to neutrinoless double beta decay matrix element*
2:15 PM–2:30 PM
Presenter:
Noritaka Shimizu
(Center for Nuclear Study, The University of Tokyo)
Authors:
Noritaka Shimizu
(Center for Nuclear Study, The University of Tokyo)
Javier Menendez
(Center for Nuclear Study, The University of Tokyo)
Kentaro Yako
(Center for Nuclear Study, The University of Tokyo)
The double Gamow-Teller (DGT) resonance is of particular interest
not only as an exotic collective excitation, but also in relevance to
the neutrinoless double-beta (0nbb) decay. In this contribution, we will present our
theoretical studies of the DGT transition and its relevance to 0nbb-decay
nuclear matrix element (NME) based on shell-model calculations.
The shell-model study reveals that the centroid energy and
the width of the DGT strength distribution of 48Ca
are sensitive to the isovector and isoscalar pairing interactions, respectively.
We also found a simple relation between the centroid energy of the 48Ca
DGT giant resonance and the 0nbb-decay NME.
More generally, we observe a very good linear correlation between
the DGT transition to the ground state of the final nucleus and the 0nbb-decay NME.
It indicates that heavy-ion double charge exchange experiments
would be a useful tool to obtain the information on the 0nbb-decay NME.
*This work has been supported in part by Priority Issue on Post-K computer "Elucidation of the fundamental laws and evolution of the universe" (hp170230, hp180179), by KAKENHI grants (17K05433, 25870168) and by CNS-RIKEN joint project for large-scale nuclear structure calculations.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.HAW.MN.2
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