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First Constraints from DAMIC-M on Sub-GeV Dark-Matter Particles Interacting with Electrons

Abstract: We report constraints on sub-GeV dark matter particles interacting with electrons from the first underground operation of DAMIC-M detectors. The search is performed with an integrated exposure of 85.23 g days, and exploits the subelectron charge resolution and low level of dark current of DAMIC-M charge-coupled devices (CCDs). Dark-matter-induced ionization signals above the detector dark current are searched for in CCD pixels with charge up to 7e-. With this dataset we place limits on dark matter particles of mass between 0.53 and 1000 MeV/c2, excluding unexplored regions of parameter space in the mass ranges [1.6,1000] MeV/c2 and [1.5,15.1] MeV/c2 for ultralight and heavy mediator interactions, respectively.

Otras publicaciones de la misma revista o congreso con autores/as de la Universidad de Cantabria

 Fuente: Physical Review Letters, 2023, 130(17), 171003

Editorial: American Physical Society

 Fecha de publicación: 01/04/2023

Nº de páginas: 7

Tipo de publicación: Artículo de Revista

 DOI: 10.1103/PhysRevLett.130.171003

ISSN: 0031-9007,1079-7114

 Proyecto español: PID2019?109829GB-I00

Url de la publicación: https://doi.org/10.1103/PhysRevLett.130.171003

Autoría

ARNQUIST, I.

NURIA CASTELLÓ MOR

JUAN CORTABITARTE GUTIERREZ

MARIA AMPARO LOPEZ VIRTO