Using the DEAP-3600 detector to constrain dark matter-nucleon effective couplings in the presence of kinematically distinct halo substructures

Friday 18 December 2020, 11:00am to 12:00pm


Online via MS Teams

Open to

Alumni, Postgraduates, Staff, Undergraduates


Registration not required - just turn up

Event Details

EPP webinar.

Abstract: DEAP-3600 is a single-phase liquid argon dark matter detector located at SNOLAB (Sudbury, Canada), designed to directly detect Weakly Interacting Massive Particles (WIMPs). In the second dark matter search performed by the DEAP collaboration (, zero candidate events were observed, and an upper limit was placed on the WIMP-nucleon spin-independent, isoscalar cross section. This result has now been reinterpreted within a Non-Relativistic Effective Field Theory framework, which explores the effect of various potential substructures in the local dark matter halo on these constraints, as implied by observations of the local stellar distribution from the Gaia satellite and other astronomical surveys. This talk discusses the various different limits that have been obtained using 231 live-days of DEAP-3600 data for the coupling strength of the effective contact interaction operators O1, O3, O5, O8, and O11, considering isoscalar, isovector and xenonphobic scenarios, also including the specific operators for millicharge, magnetic dipole, electric dipole, and anapole interactions.

If someone from outside of the EPP group would like to join the webinar, please send a request to


Ashlea Kemp (Queen's University, Ontario)

(Queen's University, Kingston, Ontario)

Contact Details

Name Dr Jarek Nowak