DAMA/LIBRA and dark matter: decisive tension or significant pathology

ORAL

Abstract

The long-running search for particle dark matter via an annually-modulating WIMP-nucleon interaction has received important updates in recent years with new results from the ANAIS-112 and COSINE-100 experiments. In this talk I will present an assessment of the tension between the long-standing DAMA/LIBRA signal and these more recent experiments under a range of hypotheses for the nuclear recoil spectra. I will show that in the most physically-motivated cases the tension between DAMA and these other NaI experiments exceeds 5σ. Lowering the tension to reasonable values requires significant tuning, such as overfitting with large numbers of free parameters and opposite-sign modulation between recoil signals on sodium versus iodine.

–

Presenters

  • Jonathan M Cornell

    • Weber State University

Authors

  • Jonathan M Cornell

    • Weber State University

  • Giorgio Busoni

    • University of Adelaide

  • Will Handley

    • Cavendish Laboratory, University of Cambridge

  • Felix Kahlhoefer

    • Karlsruhe Institute of Technology

  • Anders Kvellestad

    • University of Oslo

  • Masen D Pitts

    • Weber State University

  • Lauren Street

    • University of Cincinnati

  • Aaron C Vincent

    • Queen's University

  • Martin White

    • University of Adelaide