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Daily Modulation Constraints on Light Dark Matter with DAMIC-M

by Dastgheibi-Fard, A , Privitera, P , Noonan, J , Centeno-Lorca, C , Zhu, C , Lopez-Virto, A , Hossbach, T , Chavarria, A E , Rosenmerkel, D , Smida, R , McGuire, K J , Venegas-Vargas, D , Yajur, R , E -L Gkougkousis , Cuevas-Zepeda, J , Castello-Mor, N , Kavanagh, B J , Zhu, Y , Traina, M , Vilar, R , Aggarwal, K , Lumengo-Kidimbu, H , Gaior, R , Iddir, L , Kilminster, B , Lin, H , Munagavalasa, S , Loaiza, P , Settimo, M , Paul, S , Duarte-Campderros, J , Arnquist, I , Lou, R , Deligny, O , Letessier-Selvon, A , Robmann, P , Lawson, I , Estrada, E , Avalos, N , De Dominicis, C , Norcini, D , Roach, B , DAMIC-M Collaboration , Bertou, X

in Constraints / Dark matter / Earth rotation / Galactic halos / Modulation

2025

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Daily Modulation Constraints on Light Dark Matter with DAMIC-M

in Constraints / Dark matter / Earth rotation / Galactic halos / Modulation

2025

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Daily Modulation Constraints on Light Dark Matter with DAMIC-M

in Constraints / Dark matter / Earth rotation / Galactic halos / Modulation

2025

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Paper

Daily Modulation Constraints on Light Dark Matter with DAMIC-M

Dastgheibi-Fard, A,

Privitera, P,

Noonan, J,

Centeno-Lorca, C,

Zhu, C,

Lopez-Virto, A,

Hossbach, T,

Chavarria, A E,

Rosenmerkel, D,

Smida, R,

McGuire, K J,

Venegas-Vargas, D,

Yajur, R,

E -L Gkougkousis,

Cuevas-Zepeda, J,

Castello-Mor, N,

Kavanagh, B J,

Zhu, Y,

Traina, M,

Vilar, R,

Aggarwal, K,

Lumengo-Kidimbu, H,

Gaior, R,

Iddir, L,

Kilminster, B,

Lin, H,

Munagavalasa, S,

Loaiza, P,

Settimo, M,

Paul, S,

Duarte-Campderros, J,

Arnquist, I,

Lou, R,

Deligny, O,

Letessier-Selvon, A,

Robmann, P,

Lawson, I,

Estrada, E,

Avalos, N,

De Dominicis, C,

Norcini, D,

Roach, B,

DAMIC-M Collaboration,

Bertou, X

2025

Overview

The flux of Hidden Sector particles from the Galactic halo reaching an underground detector can be significantly attenuated by interactions within the Earth for sufficiently large scattering crosssections. This attenuation gives rise to a characteristic daily modulation in the detection rate, due to Earth's rotation. We present results from a search for such a modulation using a 1.257 kg-day dataset collected with the DAMIC-M Low Background Chamber. A model-independent analysis reveals no significant modulation in the 1e- event rate over periods from 1 to 48 h, highlighting the excellent temporal stability of the detector. In a complementary model-dependent analysis, we target the expected daily modulation signature of Hidden Sector particles, with masses in the range [0.53,2] MeV/c2, interacting with electrons via a dark photon mediator. By leveraging the expected temporal evolution of the signal, we set improved constraints on Dark Matter masses below 1.2 MeV/c2, surpassing our previous limits.

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Cornell University Library, arXiv.org

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