Speaker
Description
Author: Jonathan Cornell
Co-authors: BUSONI, Giorgio (University of Adelaide); HANDLEY, Will (University of Cambridge); KAHLHOE- FER, Felix (Karlsruhe Institute of Technology); KVELLESTAD, Anders (University of Oslo); PITTS,
Masen (Weber State University); STREET, Lauren (University of Cincinnati); VINCENT, Aaron (Queen’s University); WHITE, Martin (University of Adelaide)
Presenter: Jonathan Cornell
Abstract: The long-running search for particle dark matter via an annually-modulating WIMP-nucleon in- teraction has received important updates in recent years with new results from the ANAIS-112 and COSINE-100 experiments. In this paper, we quantify the tension between the reported DAMA sig- nal and ANAIS-112 and COSINE-100 in two different ways. The first is based on the effective field theory of a Dirac fermion dark matter candidate that is a singlet under the Standard Model gauge group, and which has a Maxwellian velocity distribution in the frame of the local dark matter halo. The second, more conservative approach, is to assume a generic functional form for the recoil en- ergy spectrum induced by WIMP-nucleon scattering, and reconstruct the expected signatures in ANAIS-112, COSINE-100 and DAMA. This allows the tension between experiments to be quanti- fied, but without constraints from realistic particle, nuclear and astrophysics. I will show that the DAMA result is now in substantial tension with COSINE-100 and ANAIS-112. In the case that the WIMP is able to scatter off both Na and I, a highly fine-tuned scenario can be used to reconcile the three experiments somewhat, but this presents a significant challenge to model builders.
