RICAP-22 Roma International Conference on AstroParticle Physics

Photon-mediated dark-matter-nucleus interactions in the PICO-60 C3F8 bubble chamber

7 Sept 2022, 19:10

2m

corridor at the first floor, close to Aula Careri

poster Poster Session

Speaker

Alejandro Santiago García Viltres (Universidad Nacional Autónoma de México)

Description

The PICO-60 C3F8 dark matter detector was a bubble chamber consisting of a fused silica inner vessel filled with 52 kg of C${}_3$F${}_8$ in a superheated state operating at 2.45-keV and 3.29-keV thermodynamic thresholds, reaching exposures of 1404-kg-day and 1167-kg-day, respectively. This bubble chamber was operated two km deep underground at SNOLAB, in Sudbury, Ontario in Canada. These two searches established the most stringent direct-detection constraints to date on the WIMP-proton spin-dependent cross-section at 2.5$\times {10}^{-41}$ cm${}^2$ for a 25 GeV/c${}^2$ WIMP. In this poster, the latest results from the PICO-60 detector will be presented, establishing coupling limits for photon-mediated dark matter-nucleus interactions using non-relativistic contact operators in an effective field theory framework.

Presentation materials

RICAP_2022-A-S_Garcia_Viltres.pdf