Searches for Ultra-Light Dark Matter in the DUNE experiment Pablo - PowerPoint PPT Presentation

Searches for Ultra-Light Dark Matter in the DUNE experiment Pablo Martínez-Miravé (University of Valencia) Pedro A. N. Machado (Fermilab) DUNE BSM Physics Working Group Meeting

Ultra-Light Dark Matter Model If an ultralight scalar couples to neutrino, it can introduce temporal variation in the measured values of particle masses. See Pedro A. N. Machado’s talk (November 2018) Regime in which it manifests as a temporal modulation of • the neutrino oscillation probability. Regime in which the modulation is averaged, leading to • Distorted Neutrino Oscillations (DiNO).

Ultra-Light Dark Matter Model If an ultralight scalar couples to neutrino, it can introduce temporal variation in the measured values of particle masses. See Pedro A. N. Machado’s talk (November 2018) Regime in which it manifests as a temporal modulation of • the neutrino oscillation probability. Regime in which the modulation is averaged, leading to • Distorted Neutrino Oscillations (DiNO).

Why DUNE? Large number of events expected at the FD • Good energy reconstruction • Sensitivity to mass splittings •

Lomb – Scargle periodogram Identify periodic signals (similar to a Fourier analysis) when data is unequally separated.

Lomb – Scargle periodogram Identify periodic signals (similar to a Fourier analysis) when data is unequally separated. False Alarm Probability to test the result (Baluev method)

Implementation in DUNE GLoBES & files from the CDR • 3 years ν mode + 3 years ν mode • Energy bins grouped • Number of measurements between 30 and 600 • Bounds on the frequency can be estimated. Modulation period Mass range ~ 10 -20 eV – 10 -23 eV

Implementation in DUNE GLoBES & files from the CDR • 3 years ν mode + 3 years ν mode • Energy bins grouped • Number of measurements between 30 and 600 • Bounds on the frequency can be estimated. Modulation period ULTRA – LIGHT Mass range ~ 10 -20 eV – 10 -23 eV DM

Sensitivity in DUNE Decreasing the number of measurements improves the sensitivity to the amplitude in a smaller frequency range. Below a certain number of measurements the sensitivity starts getting worse (Lomb Scargle method)

Conclusions Lomb-Scargle periodogram is the method to look for time • modulation in the data. The number of measurements and how the energy bins are • grouped affect the sensitivity of the experiment. For certain frequencies, modulations of ~1% or less could • be measured. DUNE can be Ultra Light Dark Matter detector (sensitive to • a subcomponent of the total DM)

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Searches for Ultra-Light Dark Matter in the DUNE experiment SPARE SLIDES

Nov/2018 Pedro A. N. Machado | DUNE as a detector of ultra-light dark matter 1705.06740

Nov/2018 Pedro A. N. Machado | DUNE as a detector of ultra-light dark matter 1705.06740