• Jodi Cooley (SMU), Tongyan Lin (UCSD), Hugh Lippincott (UCSB), and Tracy Slatyer (MIT)
  • You can also email us using this link, or write to cooley[at]physics.smu.edu, tongyan[at]physics.ucsd.edu, hlippincott[at]ucsb.edu, and tslatyer[at]mit.edu
• Email list: SNOWMASS-CF-01-DM-PARTICLE@FNAL.GOV
  • For instructions how to join an Email list refer to Cosmic Frontier/Communications
• Slack channel: cf01-dark_matter_particle
• Indico page with summer/fall meeting schedule: link

This group covers dark matter in the regime where it appears in experiments as individual quanta, rather than coherently via wave phenomena. Techniques to search for such particles include directly through its interaction with detector materials, indirectly from products of its annihilation, and via production at accelerators (primarily covered in other frontiers).

We held a series of 90 minute meetings for the CF1 topical group in August and September of 2020. These meetings included a mixture of short talks, panels, and general discussion and questions, informed by the responses from the interest survey and the discussion at the kickoff meeting. Thanks to all of you who attended the meetings or filled in the survey.

In November and December, we held a series of meeting describing our Big Questions White Paper planning, requesting feedback and volunteers to be coordinators and contributors.

Our Indico page contains meeting details, including recordings and real-time minutes, for all CF1 meetings: https://indico.fnal.gov/category/1193

In November 2020, we set out ~8 “Big Questions” that could be addressed by the community via white papers. The focus of these papers can still change as the community works together to talk about what is most important, but the topics to first order are listed below, along with paper coordinators and the name of the relevant Snowmass slack channel.

• Direct detection to the neutrino floor (theory motivation including EFT)
  • Coordinators: Rick Gaitskell, Cristiano Galbiati, Ben Loer
  • Slack: #cf01-wp1-direct-detection-neutrino-floor
  • multi-scale portfolio that includes a broad energy range and experiment cost. (Xe, Ar, CCDs, Bubble chamber, Solid State Detectors)
  • focus on ~>1 GeV nuclear recoils
  • reasonable to achieve on a G3 timescale (~10 yr including construction and operations).
• The landscape of low threshold detection in the next decade (theory motivation included by theory of detectors including AMO, bandgaps,etc more in #4)
  • Coordinators: Graham Giovanetti, Noah Kurinsky, Daniel McKinsey, Tien-Tien Yu
  • Slack: #cf01-wp2-low-threshold-detection
  • Re-statement of parts of BRN/Cosmic Visions for low threshold detectors
  • Theory to motivate then a description of the new wave of experimental ideas.
  • How to handle experiments at different phases (e.g. SENSEI/DAMIC and CDMS vs. LHe vs. other novel ideas that are even more in R&D stage)?

Here is the list of submitted LOIs to this topic. First index before “/” corresponds to the primary frontier used for the submission.