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arXiv · 2107.10865

Probing scalar dark matter oscillations with neutrino oscillations

Marta Losada·Yosef Nir·Gilad Perez·Yogev Shpilman
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Abstract

If ultra-light dark matter (ULDM) exists and couples to neutrinos, it can be discovered via time-periodic variations in the neutrino mass and mixing parameters. We analyze the current bounds on such a scenario and establish the sensitivity expected for both time-averaged and time-resolved modulations in future neutrino oscillation experiments. We place a special emphasis in our analysis on time modulations of the CP violating mixing phase. We illustrate with a toy model the case where the leading modulation effect can be CP violating while the effect on CP conserving parameters is suppressed. We show a unique imprint that a time averaged CP violating modulation of ULDM can leave in neutrino oscillations, while direct CP asymmetries vanish.

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Marta Losada, Yosef Nir, Gilad Perez, Yogev Shpilman. 2021-07-22. Probing scalar dark matter oscillations with neutrino oscillations. https://doi.org/10.1007/jhep04(2022)030

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