| Article | |
| Report number | arXiv:2311.06352 ; CERN-TH-2023-195 ; MI-HET-818 |
| Title | Broad Sterile Neutrinos & the Reactor/Gallium Tension |
| Author(s) | Banks, Hannah (Cambridge U., DAMTP ; CERN) ; Kelly, Kevin J. (Texas A-M) ; McCullough, Matthew (CERN) ; Zhou, Tao (Texas A-M) |
| Publication | 2024-04-17 |
| Imprint | 2023-11-10 |
| Number of pages | 8 p, 8 |
| In: | JHEP 2404 (2024) 096 |
| DOI | 10.1007/JHEP04(2024)096 |
| Subject category | hep-ph ; Particle Physics - Phenomenology |
| Abstract | Significant evidence exists for the apparent disappearance of electron-type neutrinos in radioactive source experiments. Yet, interpreted within the standard `3+1 sterile neutrino scenario', precision short-baseline measurements of electron antineutrinos from nuclear reactors strongly disagree with these results. Recently, it has been demonstrated that allowing for a finite wavepacket size for the reactor neutrinos can ameliorate such a tension, however the smallness of the required wavepackets is a subject of intense debate. In this work, we demonstrate that a `broad' sterile neutrino may relax this tension in much the same way. Such a phenomenological possibility can arise in plausible hidden sector scenarios, such as a clockwork-style sector, for which we provide a concrete microscopic model. |
| Copyright/License | preprint: (License: arXiv nonexclusive-distrib 1.0) publication: © 2024 The Authors (License: CC-BY-4.0), sponsored by SCOAP³ |
Corresponding record in: Inspire
Record created 2023-11-15, last modified 2024-10-25
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