UCLA Dark Matter 2023

Session

SESSION 10: Direct Detection: status of liquid/gas WIMP detectors (CHAIR: Alvine Kamaha -UCLA)

31 Mar 2023, 07:30

PAB- 1-425 (UCLA)

321. Recent progress and plan of PandaX experiment

Ning Zhou

31/03/2023, 07:30

Non-directional direct dark matter detection

Talk

PandaX experiment uses xenon as target to detect weak and rare physics signals, including dark matter and neutrinos. We are running a new generation detector with 4-ton xenon in the sensitive volume, PandaX-4T. The commissioning run data has pushed the constraints on WIMP-nucleon scattering cross section to a new level. In this talk, I will give an overview of PandaX-4T latest results on dark...

276. The NEWS-G light Dark Matter search experiment: Physics results from a 10 day exposure with pure methane gas

Mr Daniel Durnford (University of Alberta)

31/03/2023, 07:45

Non-directional direct dark matter detection

Talk

The NEWS-G direct detection dark matter search experiment uses spherical proportional counters (SPCs) with light noble gasses to search for low mass WIMP-like dark matter. The current iteration of the experiment consists of a large 140 cm diameter SPC installed at SNOLAB benefiting from a new sensor design, and improvements in detector performance and data quality. Before its installation at...

310. Recent developments of the PICO dark matter detectors

Colin Moore

31/03/2023, 08:00

Non-directional direct dark matter detection

Talk

PICO is currently fielding two large dark matter bubble chamber detectors at SNOLAB.
PICO-40L is the first of a new type of dark matter detector using an improved detector geometry. The detector was recently refurbished with a new cooling system and is operating now at SNOLAB.
At the same time PICO-500, a large dark matter bubble chamber following the same principle as PICO-40L is...

203. Dark Matter search results from the LUX-ZEPLIN (LZ) Experiment

Dr Maria Elena Monzani

31/03/2023, 08:15

Non-directional direct dark matter detection

Talk

LUX-ZEPLIN (LZ) is a direct dark matter detection experiment currently being operated at the Sanford Underground Research Facility (SURF) in Lead, South Dakota. LZ is an instrument that is superlative in many ways. It utilizes 7 tonnes of liquid xenon in a dual phase time projection chamber, surrounded by an instrumented xenon “skin” region and gadolinium-loaded liquid scintillator outer...

209. XENONnT: first WIMP search results

Luca Grandi (The University of Chicago)

31/03/2023, 08:30

Non-directional direct dark matter detection

Talk

The XENONnT experiment searches for signs of dark matter and physics beyond the Standard Model within a 5.9-tonne xenon target instrumented as a two-phase time projection chamber. I will report about the status of the experiment and present its early physics results.

271. DarkSide-20k: The Next Stage in the Direct Dark Matter Search Using Liquid Argon

Thomas Nathan Thorpe (University of California Los Angeles (US))

31/03/2023, 08:45

Non-directional direct dark matter detection

Talk

Dual-phase noble liquid Time Projection Chambers (TPCs) and single-phase scintillation-only detectors offer competitive ways to search for dark matter (DM) directly, via elastically scattering off of detector target nuclei and electrons. Argon possesses an intrinsic property allowing for powerful discrimination between electron (background) and nuclear (signal) recoils in the search for...

282. Dark matter search in DEAP-3600: results and prospects

Dr Michela Lai

31/03/2023, 09:00

Non-directional direct dark matter detection

Talk

DEAP-3600 is the largest running dark matter detector filled with liquid argon, set at SNOLAB in Sudbury, Canada, 2 km underground. Since 2019 the experiment has held the most stringent exclusion limit in argon for WIMPs above 20 GeV/c$^2$. Such a result is a consequence of the large detector exposure and the extraordinary rejection power achievable in liquid argon against electron recoil...

248. DARWIN and the Future of Liquid Xenon Dark Matter Detectors

Abigail Kopec (UC San Diego)

31/03/2023, 09:15

Non-directional direct dark matter detection

Talk

Liquid xenon time projection chambers are established as a leading dark matter detector technology. LZ and XENONnT are in the midst of sweeping exciting parameter space for Weakly Interacting Massive Particles (WIMPs) and other rare particle physics phenomena. Regardless of a dark matter signal observation in the current generation of detectors, it is important to look to a future experiment...

281. New constraints on ultra heavy dark matter from the LUX-ZEPLIN (LZ) experiment

Ibles Olcina Samblas

31/03/2023, 09:30

Non-directional direct dark matter detection

Talk

Despite the bulk of gravitational evidence, little is known about the nature of dark matter (DM). New particles were invoked to explain this puzzle, with the weakly interacting massive particle (WIMP) and the QCD axion being the two most popular candidates. However, searches for these particles have so far come back empty-handed. Alternative dark matter candidates have been proposed, in...