Lattice QCD Inputs for nuclear double beta decay
© 2020 Elsevier B.V. Second order β-decay processes with and without neutrinos in the final state are key probes of nuclear physics and of the nature of neutrinos. Neutrinoful double-β decay is the rarest Standard Model process that has been observed and provides a unique test of the understanding o...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier BV
2021
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| Online Access: | https://hdl.handle.net/1721.1/132498 |
| _version_ | 1826216659987202048 |
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| author | Cirigliano, Vincenzo Detmold, William Nicholson, Amy Shanahan, Phiala |
| author2 | Massachusetts Institute of Technology. Center for Theoretical Physics |
| author_facet | Massachusetts Institute of Technology. Center for Theoretical Physics Cirigliano, Vincenzo Detmold, William Nicholson, Amy Shanahan, Phiala |
| author_sort | Cirigliano, Vincenzo |
| collection | MIT |
| description | © 2020 Elsevier B.V. Second order β-decay processes with and without neutrinos in the final state are key probes of nuclear physics and of the nature of neutrinos. Neutrinoful double-β decay is the rarest Standard Model process that has been observed and provides a unique test of the understanding of weak nuclear interactions. Observation of neutrinoless double-β decay would reveal that neutrinos are Majorana fermions and that lepton number conservation is violated in nature. While significant progress has been made in phenomenological approaches to understanding these processes, establishing a connection between these processes and the physics of the Standard Model and beyond is a critical task as it will provide input into the design and interpretation of future experiments. The strong-interaction contributions to double-β decay processes are non-perturbative and can only be addressed systematically through a combination of lattice Quantum Chromoodynamics (LQCD) and nuclear many-body calculations. In this review, current efforts to establish the LQCD connection are discussed for both neutrinoful and neutrinoless double-β decay. LQCD calculations of the hadronic contributions to the neutrinoful process nn→ppe−e−ν̄eν̄e and to various neutrinoless pionic transitions are reviewed, and the connections of these calculations to the phenomenology of double-β decay through the use of effective field theory (EFTs) is highlighted. At present, LQCD calculations are limited to small nuclear systems, and to pionic subsystems, and require matching to appropriate EFTs to have direct phenomenological impact. However, these calculations have already revealed qualitatively that there are terms in the EFTs that can only be constrained from double-β decay processes themselves or using inputs from LQCD. Future prospects for direct calculations in larger nuclei are also discussed. |
| first_indexed | 2024-09-23T16:51:21Z |
| format | Article |
| id | mit-1721.1/132498 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T16:51:21Z |
| publishDate | 2021 |
| publisher | Elsevier BV |
| record_format | dspace |
| spelling | mit-1721.1/1324982024-01-02T20:05:36Z Lattice QCD Inputs for nuclear double beta decay Cirigliano, Vincenzo Detmold, William Nicholson, Amy Shanahan, Phiala Massachusetts Institute of Technology. Center for Theoretical Physics © 2020 Elsevier B.V. Second order β-decay processes with and without neutrinos in the final state are key probes of nuclear physics and of the nature of neutrinos. Neutrinoful double-β decay is the rarest Standard Model process that has been observed and provides a unique test of the understanding of weak nuclear interactions. Observation of neutrinoless double-β decay would reveal that neutrinos are Majorana fermions and that lepton number conservation is violated in nature. While significant progress has been made in phenomenological approaches to understanding these processes, establishing a connection between these processes and the physics of the Standard Model and beyond is a critical task as it will provide input into the design and interpretation of future experiments. The strong-interaction contributions to double-β decay processes are non-perturbative and can only be addressed systematically through a combination of lattice Quantum Chromoodynamics (LQCD) and nuclear many-body calculations. In this review, current efforts to establish the LQCD connection are discussed for both neutrinoful and neutrinoless double-β decay. LQCD calculations of the hadronic contributions to the neutrinoful process nn→ppe−e−ν̄eν̄e and to various neutrinoless pionic transitions are reviewed, and the connections of these calculations to the phenomenology of double-β decay through the use of effective field theory (EFTs) is highlighted. At present, LQCD calculations are limited to small nuclear systems, and to pionic subsystems, and require matching to appropriate EFTs to have direct phenomenological impact. However, these calculations have already revealed qualitatively that there are terms in the EFTs that can only be constrained from double-β decay processes themselves or using inputs from LQCD. Future prospects for direct calculations in larger nuclei are also discussed. 2021-09-20T18:22:44Z 2021-09-20T18:22:44Z 2020 2020-10-20T17:01:55Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/132498 en 10.1016/J.PPNP.2020.103771 Progress in Particle and Nuclear Physics Creative Commons Attribution-NonCommercial-NoDerivs License http://creativecommons.org/licenses/by-nc-nd/4.0/ application/pdf Elsevier BV arXiv |
| spellingShingle | Cirigliano, Vincenzo Detmold, William Nicholson, Amy Shanahan, Phiala Lattice QCD Inputs for nuclear double beta decay |
| title | Lattice QCD Inputs for nuclear double beta decay |
| title_full | Lattice QCD Inputs for nuclear double beta decay |
| title_fullStr | Lattice QCD Inputs for nuclear double beta decay |
| title_full_unstemmed | Lattice QCD Inputs for nuclear double beta decay |
| title_short | Lattice QCD Inputs for nuclear double beta decay |
| title_sort | lattice qcd inputs for nuclear double beta decay |
| url | https://hdl.handle.net/1721.1/132498 |
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