Dark Matter Working Group Summary 42117 Andrew Sonnenschein

Dark Matter Working Group Summary 4/21/17 Andrew Sonnenschein

Thursday Working Group Talks https: //indico. fnal. gov/conference. Display. py? conf. Id=14220 2 1/16/2022

Dark Matter Taxonomy from Gordan’s talk 3 1/16/2022

Opportunities: Cosmic Exploration • Use LSST to study observable signatures of dark sector physics, including dark energy, dark matter, neutrinos and signatures of inflation. Fermilab will contribute to data analysis pipeline, data management, calibrations, science analysis. • Follow up beyond LSST with Fermilab particpation in WFIRST, SSSI. • Study gamma rays from galactic center with next generation instrument? • Search for dark matter annihilation into neutrinos with Icecube? 4 1/16/2022

Opportunities: Traditional Searches- bigger, better faster • • 5 Probe WIMP-Nucleon cross sections down to 10 -48 cm 2 for WIMP masses ~10 Ge. V- 1 Te. V by participation in LZ experiment. Go one order of magnitude further in cross section, down to neutrino floor, by participation in large international xenon or argon collaborations (DARWIN, Argo/ DEAP-n. T) Develop large bubble chambers to measure spin-dependent couplings beyond reach of argon and xenon and/or to measure full range of nuclear couplings for a signal first seen in argon or xenon. This will require R&D on scale up of bubble chambers to multi-ton targets. Search for QCD axion with ADMX and follow on experiments. Fermilab should be lead lab for axion detection, hosting next generation experiment in a dedicated high-field solenoid facility. Develop single photon detector technology for microwaves to beat the standard quantum limit for axion detection: QBITs, QDOTs or bolometers. Exploit synergy with quantum computation and other quantum sensor developments. 1/16/2022

Opportunities: Emerging Searches for New/ Overlooked Ideas • Explore masses from 1 -10 Ge. V down to cross sections on nucleon of 1044 cm 2 (neutrino floor) with high-voltage cryogenic detectors (Super. CDMS and follow on projects). • Search for single electron recoils from dark matter using scintillator crystals with readout of light and heat. • Perform search for DM scattering on electrons in silicon CCD detectors with 1 -2 electron threshold. • Develop cryogenic detectors to read out excitations in superfluid helium, enabling sensitivity to Me. V mass dark matter. • Search for dark photons at with LDMX at SLAC. Fermilab will provide a major detector subsystem such as HCAL electronics. • Expand DM search capabilities of the Fermilab short baseline neutrino program. Improve BNB beam dump. Develop new detector options for BNB dark matter search. 6 1/16/2022

Opportunities: Search for Exotic Dark Matter Candidates with New Technology • Atomic fountain interferometer at Nu. MI? • Search for black hole DM with atomic clocks? • Dark photon searches using techniques developed for axions? 7 1/16/2022