Coordinators: Ciaran Madeleine Zurowski (Deactivated)

Members: celine Michael Baker (Deactivated) Elisabetta Barberio

Goal

Study how Galactic Dark Matter conditions affect direct detection and signal modulation

Investigated processes

• Possible non-standard halo models:

  • “Messy” VDFs from simulation

    • G. Lawrence in prep (+ MJZ and GL already working on related project)

  • Gaia sausage (two gaussian distributions)

    • https://arxiv.org/abs/1909.04684

    • https://arxiv.org/abs/1807.02519

  • S1 stream (counter-rotating/retrograde stream)

    • https://arxiv.org/abs/1909.04684

  • Nyx (co-rotating/prograde stream)

    • https://arxiv.org/abs/1907.07681

  • Hemli stream (stream from merger event)

    • https://arxiv.org/abs/1907.07681

  • Koppelman 1 and 2 (also called group 1 and 2, pair of streams from recent accretion)

    • https://arxiv.org/abs/1907.07681

• EFTs with strong dependence on velocity or that allow for strong limits from NaI

Milestones

• Compute model spectrums in SABRE (if in a pinch, just do the last two)
• SI
• SD
• V dep
• Low mass
• High mass
• Influence of velocity dist on exclusion plots for SI (O1)
• SHM
• SHM++
• Helmi
• Sausage
• Sequoia
• Shards
• Messy
• Influence of velocity dist on exclusion plots for SD (O4)
• SHM
• SHM++
• Helmi
• Sausage
• Sequoia
• Shards
• Messy
• Comparison of modulation fraction for different targets
• Modulation amplitude vs peak day/phase

Meetings

Resources

Halo substructures of interest (Ciaran’s work): https://arxiv.org/pdf/1909.04684.pdf

Similar/inspirational work from DEAP: https://arxiv.org/pdf/2005.14667.pdf

Previous SABRE study on one halo substructure (S1 from above list) and a few EFTs (Maddy’s work): https://arxiv.org/abs/2005.10404