Nicholson, A. and Berkowitz, E. and Monge-Camacho, H. and Brantley, D. and Garron, N. and Chang, C. C. and Rinaldi, E. and Clark, M. A. and Joó, B. and Kurth, T. and Tiburzi, B. C. and Vranas, P. and Walker-Loud, A. (2018) Heavy Physics Contributions to Neutrinoless Double Beta Decay from QCD. Physical Review Letters, 121 (17). ISSN 0031-9007
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Abstract
Observation of neutrinoless double beta decay, a lepton number violating process that has been proposed to clarify the nature of neutrino masses, has spawned an enormous world-wide experimental effort. Relating nuclear decay rates to high-energy, beyond the standard model (BSM) physics requires detailed knowledge of nonperturbative QCD effects. Using lattice QCD, we compute the necessary matrix elements of short-range operators, which arise due to heavy BSM mediators, that contribute to this decay via the leading order π−→π+ exchange diagrams. Utilizing our result and taking advantage of effective field theory methods will allow for model-independent calculations of the relevant two-nucleon decay, which may then be used as input for nuclear many-body calculations of the relevant experimental decays. Contributions from short-range operators may prove to be equally important to, or even more important than, those from long-range Majorana neutrino exchange.
| Item Type: | Article |
|---|---|
| Additional Information and Comments: | This is the author accepted manuscript version of an article, accepted for publication in Physical Review Letters. The final, published version is available from: https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.121.172501 |
| Faculty / Department: | Faculty of Human and Digital Sciences > Mathematics and Computer Science |
| Depositing User: | Nicolas Garron |
| Date Deposited: | 21 Jun 2023 09:11 |
| Last Modified: | 21 Jun 2023 09:11 |
| URI: | https://hira.hope.ac.uk/id/eprint/3966 |
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