Canning, JAL;
Deppisch, FF;
Pei, W;
(2023)
Sensitivity of future tritium decay experiments to New Physics.
Journal of High Energy Physics
, 2023
(3)
, Article 144. 10.1007/JHEP03(2023)144.
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Abstract
Tritium beta-decay is the most promising approach to measure the absolute masses of active light neutrinos in the laboratory and in a model-independent fashion. The development of Cyclotron Radiation Emission Spectroscopy techniques and the use of atomic tritium has the potential to improve the current limits by an order of magnitude in future experiments. In this paper, we analyse the potential sensitivity of such future searches to keV-mass sterile neutrinos and exotic interactions of either the active or sterile neutrinos. We calculate the relevant decay distributions in both energy and angle of the emitted electron with respect to a potential polarisation of the tritium, including the interference with the Standard Model case as well as incorporating relevant final state corrections for atomic tritium. We present projected sensitivities on the active-sterile neutrino mixing and effective coupling constants of exotic currents, demonstrating the potential to probe New Physics in tritium experiments.
| Type: | Article |
|---|---|
| Title: | Sensitivity of future tritium decay experiments to New Physics |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1007/JHEP03(2023)144 |
| Publisher version: | https://doi.org/10.1007/JHEP03(2023)144 |
| Language: | English |
| Additional information: | Open Access . This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited. |
| Keywords: | Non-Standard Neutrino Properties, Sterile or Heavy Neutrinos, Neutrino Interactions, Specific BSM Phenomenology |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10168377 |
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