A pathway to unveiling neutrinoless ββ decay nuclear matrix elements via γγ decay
We investigate the experimental feasibility of detecting second-order double-magnetic dipole (γγ-M1M1) decays from double isobaric analog states (DIAS), which have recently been found to be strongly correlated with the nuclear matrix elements of neutrinoless ββ decay. Using the nuclear shell model,...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-01-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269324007445 |
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| author | Beatriz Romeo Damiano Stramaccioni Javier Menéndez Jose Javier Valiente-Dobón |
| author_facet | Beatriz Romeo Damiano Stramaccioni Javier Menéndez Jose Javier Valiente-Dobón |
| author_sort | Beatriz Romeo |
| collection | DOAJ |
| description | We investigate the experimental feasibility of detecting second-order double-magnetic dipole (γγ-M1M1) decays from double isobaric analog states (DIAS), which have recently been found to be strongly correlated with the nuclear matrix elements of neutrinoless ββ decay. Using the nuclear shell model, we compute theoretical branching ratios for γγ-M1M1 decays and compare them with other competing processes, such as single-γ decay and proton emission, which represent the dominant decay channels. We also estimate the potential competition from internal conversion and internal pair creation, which can influence the decay dynamics. Additionally, we propose an experimental strategy based on using LaBr3 scintillators to identify γγ-M1M1 transitions from the DIAS amidst the background of the competing processes. Our approach emphasizes the challenges of isolating the rare γγ-M1M1 decay and suggests ways to enhance the experimental detection sensitivity. Our simulations suggest that it may be possible to access experimentally γγ-M1M1 decays from DIAS, shedding light on the neutrinoless ββ decay nuclear matrix elements. |
| format | Article |
| id | doaj-art-378fe05c2d1849e4b2a058bd9103675f |
| institution | Kabale University |
| issn | 0370-2693 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj-art-378fe05c2d1849e4b2a058bd9103675f2025-01-10T04:37:33ZengElsevierPhysics Letters B0370-26932025-01-01860139186A pathway to unveiling neutrinoless ββ decay nuclear matrix elements via γγ decayBeatriz Romeo0Damiano Stramaccioni1Javier Menéndez2Jose Javier Valiente-Dobón3Department of Physics and Astronomy, University of North Carolina, 27516-3255, Chapel Hill, USA; Departament de Física Quàntica i Astrofísica, Universitat de Barcelona, 08028, Barcelona, Spain; Institut de Ciències del Cosmos, Universitat de Barcelona, 08028, Barcelona, Spain; Donostia International Physics Center, 20018, San Sebastián, Spain; Corresponding author.Laboratori Nazionali di Legnaro, Istituto Nazionale di Fisica Nucleare, 35020, Legnaro, Italy; Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, 35121, Padova, ItalyDepartament de Física Quàntica i Astrofísica, Universitat de Barcelona, 08028, Barcelona, Spain; Institut de Ciències del Cosmos, Universitat de Barcelona, 08028, Barcelona, SpainLaboratori Nazionali di Legnaro, Istituto Nazionale di Fisica Nucleare, 35020, Legnaro, Italy; Instituto de Física Corpuscular, CSIC-Universidad de Valencia, 46980, Valencia, SpainWe investigate the experimental feasibility of detecting second-order double-magnetic dipole (γγ-M1M1) decays from double isobaric analog states (DIAS), which have recently been found to be strongly correlated with the nuclear matrix elements of neutrinoless ββ decay. Using the nuclear shell model, we compute theoretical branching ratios for γγ-M1M1 decays and compare them with other competing processes, such as single-γ decay and proton emission, which represent the dominant decay channels. We also estimate the potential competition from internal conversion and internal pair creation, which can influence the decay dynamics. Additionally, we propose an experimental strategy based on using LaBr3 scintillators to identify γγ-M1M1 transitions from the DIAS amidst the background of the competing processes. Our approach emphasizes the challenges of isolating the rare γγ-M1M1 decay and suggests ways to enhance the experimental detection sensitivity. Our simulations suggest that it may be possible to access experimentally γγ-M1M1 decays from DIAS, shedding light on the neutrinoless ββ decay nuclear matrix elements.http://www.sciencedirect.com/science/article/pii/S0370269324007445 |
| spellingShingle | Beatriz Romeo Damiano Stramaccioni Javier Menéndez Jose Javier Valiente-Dobón A pathway to unveiling neutrinoless ββ decay nuclear matrix elements via γγ decay Physics Letters B |
| title | A pathway to unveiling neutrinoless ββ decay nuclear matrix elements via γγ decay |
| title_full | A pathway to unveiling neutrinoless ββ decay nuclear matrix elements via γγ decay |
| title_fullStr | A pathway to unveiling neutrinoless ββ decay nuclear matrix elements via γγ decay |
| title_full_unstemmed | A pathway to unveiling neutrinoless ββ decay nuclear matrix elements via γγ decay |
| title_short | A pathway to unveiling neutrinoless ββ decay nuclear matrix elements via γγ decay |
| title_sort | pathway to unveiling neutrinoless ββ decay nuclear matrix elements via γγ decay |
| url | http://www.sciencedirect.com/science/article/pii/S0370269324007445 |
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