Service interruption on Monday 11 July from 12:30 to 13:00: all the sites of the CCSD (HAL, Epiciences, SciencesConf, AureHAL) will be inaccessible (network hardware connection).
Skip to Main content Skip to Navigation
Journal articles

Dark Matter with Pseudoscalar-Mediated Interactions Explains the DAMA Signal and the Galactic Center Excess

Abstract : We study a Dirac dark matter particle interacting with ordinary matter via the exchange of a light pseudoscalar, and analyze its impact on both direct and indirect detection experiments. We show that this candidate can accommodate the long-standing DAMA modulated signal and yet be compatible with all exclusion limits at 9 9S% C.L. This result holds for natural choices of the pseudoscalar-quark couplings (e.g., flavor universal), which give rise to a significant enhancement of the dark matter-proton coupling with respect to the coupling to neutrons. We also find that this candidate can accommodate the observed 1-3 GeV gamma-ray excess at the Galactic center and at the same time have the correct relic density today. The model could be tested with measurements of rare meson decays, flavor changing processes, and searches for axionlike particles with mass in the MeV range.
Complete list of metadata

https://hal-insu.archives-ouvertes.fr/insu-03644776
Contributor : Hal Sorbonne Université Gestionnaire Connect in order to contact the contributor
Submitted on : Friday, April 29, 2022 - 7:10:37 AM
Last modification on : Friday, April 29, 2022 - 7:10:53 AM

File

PhysRevLett.114.011301.pdf
Publisher files allowed on an open archive

Identifiers

Citation

Chiara Arina, Eugenio del Nobile, Paolo Panci. Dark Matter with Pseudoscalar-Mediated Interactions Explains the DAMA Signal and the Galactic Center Excess. Physical Review Letters, 2015, 114, ⟨10.1103/PhysRevLett.114.011301⟩. ⟨insu-03644776⟩

Share

Metrics

Record views

4

Files downloads

2