Macroscopic neutrinoless double beta decay: Long range quantum coherence
We re-introduce, in light of our modern understanding of neutrinos, the concept of “macroscopic neutrinoless double beta decay” (MDBD) for Majorana neutrinos. In this process an antineutrino produced by a nucleus undergoing beta decay, X→Y+e−+ν¯e, is absorbed as a neutrino by another identical X nuc...
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Elsevier
2025-03-01
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| Series: | Nuclear Physics B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0550321325000392 |
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| author | Gordon Baym Jen-Chieh Peng |
| author_facet | Gordon Baym Jen-Chieh Peng |
| author_sort | Gordon Baym |
| collection | DOAJ |
| description | We re-introduce, in light of our modern understanding of neutrinos, the concept of “macroscopic neutrinoless double beta decay” (MDBD) for Majorana neutrinos. In this process an antineutrino produced by a nucleus undergoing beta decay, X→Y+e−+ν¯e, is absorbed as a neutrino by another identical X nucleus via the inverse beta decay reaction, νe+X→e−+Y. The distinct signature of MDBD is that the total kinetic energy of the two electrons equals twice the endpoint energy of single beta decay. The amplitude for MDBD, a coherent sum over the contribution of different mass states of the intermediate neutrinos, reflects quantum coherence over macroscopic distances, and is a new macroscopic quantum effect. We evaluate the rate of MDBD for a macroscopic sample of “X” material, e.g., tritium, acting both as the source and the target. The accidental background for MDBD originating from two separate single beta decays, which contains two final state neutrinos, can be readily rejected by measuring the energy of the detected two electrons. We discuss the similarities and differences between the MDBD and conventional neutrinoless double beta decay. While MDBD is clearly not a viable replacement for traditional 0νDBD experiments, analysis of the concept of MDBD offers new perspectives on the physics of neutrinoless double beta decays. |
| format | Article |
| id | doaj-art-c20bb57cad75446e8a332a28c448db66 |
| institution | Kabale University |
| issn | 0550-3213 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Nuclear Physics B |
| spelling | doaj-art-c20bb57cad75446e8a332a28c448db662025-02-08T04:59:32ZengElsevierNuclear Physics B0550-32132025-03-011012116829Macroscopic neutrinoless double beta decay: Long range quantum coherenceGordon Baym0Jen-Chieh Peng1Illinois Center for Advanced Studies of the Universe and Department of Physics, University of Illinois, 1110 W. Green Street, Urbana, IL 61801, United States of AmericaCorresponding author.; Illinois Center for Advanced Studies of the Universe and Department of Physics, University of Illinois, 1110 W. Green Street, Urbana, IL 61801, United States of AmericaWe re-introduce, in light of our modern understanding of neutrinos, the concept of “macroscopic neutrinoless double beta decay” (MDBD) for Majorana neutrinos. In this process an antineutrino produced by a nucleus undergoing beta decay, X→Y+e−+ν¯e, is absorbed as a neutrino by another identical X nucleus via the inverse beta decay reaction, νe+X→e−+Y. The distinct signature of MDBD is that the total kinetic energy of the two electrons equals twice the endpoint energy of single beta decay. The amplitude for MDBD, a coherent sum over the contribution of different mass states of the intermediate neutrinos, reflects quantum coherence over macroscopic distances, and is a new macroscopic quantum effect. We evaluate the rate of MDBD for a macroscopic sample of “X” material, e.g., tritium, acting both as the source and the target. The accidental background for MDBD originating from two separate single beta decays, which contains two final state neutrinos, can be readily rejected by measuring the energy of the detected two electrons. We discuss the similarities and differences between the MDBD and conventional neutrinoless double beta decay. While MDBD is clearly not a viable replacement for traditional 0νDBD experiments, analysis of the concept of MDBD offers new perspectives on the physics of neutrinoless double beta decays.http://www.sciencedirect.com/science/article/pii/S0550321325000392 |
| spellingShingle | Gordon Baym Jen-Chieh Peng Macroscopic neutrinoless double beta decay: Long range quantum coherence Nuclear Physics B |
| title | Macroscopic neutrinoless double beta decay: Long range quantum coherence |
| title_full | Macroscopic neutrinoless double beta decay: Long range quantum coherence |
| title_fullStr | Macroscopic neutrinoless double beta decay: Long range quantum coherence |
| title_full_unstemmed | Macroscopic neutrinoless double beta decay: Long range quantum coherence |
| title_short | Macroscopic neutrinoless double beta decay: Long range quantum coherence |
| title_sort | macroscopic neutrinoless double beta decay long range quantum coherence |
| url | http://www.sciencedirect.com/science/article/pii/S0550321325000392 |
| work_keys_str_mv | AT gordonbaym macroscopicneutrinolessdoublebetadecaylongrangequantumcoherence AT jenchiehpeng macroscopicneutrinolessdoublebetadecaylongrangequantumcoherence |