Broad sterile neutrinos & the reactor/gallium tension

A bstract 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 disa...

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Bibliographic Details
Published in:The journal of high energy physics 2024-04, Vol.2024 (4), p.96-17, Article 96
Main Authors: Banks, Hannah, Kelly, Kevin J., McCullough, Matthew, Zhou, Tao
Format: Article
Language:English
Subjects:
Antineutrinos
Classical and Quantum Gravitation
Elementary Particles
Experiments
Gallium
Neutrino Mixing
Neutrinos
New Light Particles
Non-Standard Neutrino Properties
Nuclear reactors
Physics
Physics and Astronomy
Quantum Field Theories
Quantum Field Theory
Quantum Physics
Regular Article - Theoretical Physics
Relativity Theory
Sterile or Heavy Neutrinos
String Theory
Wave packets
Citations: Items that this one cites
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Summary:A bstract 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.
ISSN:1029-8479
1029-8479
DOI:10.1007/JHEP04(2024)096