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11–15 Jul 2022
Niels Bohr Institute
Europe/Copenhagen timezone
Zoom room: https://ucph-ku.zoom.us/j/61850277164?pwd=bW9yN3ltTkFXOXRacjNBSUYvWHZYZz09

Impact of Wave Packet Separation in Low-Energy Sterile Neutrino Searches

12 Jul 2022, 14:12
12m
Auditorium A (NBI)

Auditorium A

NBI

Speaker

Toni Bertólez Martínez (Institute of Cosmic Sciences, Universitat de Barcelona)

Description

Analyses of neutrino oscillations experiments usually rely on the standard probability formula, which assumes that neutrino wave functions can be approximated by plane waves and neglects any decoherence effect. This expression is valid in most regimes, or at least it is in the three neutrino paradigm.
In this talk, we will re-examine this assumption in the context of sterile neutrino oscillations and check that reactor and nuclear decay experiments must not blindly use the standard formula. Instead, it is necessary to acknowledge the phenomenological implications of a possible dampening of the sterile neutrino oscillations. Furthermore, we will see how the tension between reactor and nuclear decay experiments can be slightly relaxed by this effect, which does not necessarily introduce any other new physics.
This talk is based on 2201.05108.

Primary authors

Dr Carlos Argüelles Delgado (Department of Physics & Laboratory for Particle Physics and Cosmology, Harvard University) Dr Jordi Salvadó Serra (Institute of Cosmic Sciences, Universitat de Barcelona) Toni Bertólez Martínez (Institute of Cosmic Sciences, Universitat de Barcelona)

Presentation materials