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Hi all,
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<p>We will have our next PASS talk on Monday with Michela talking
about Argon Dark Matter detectors. Please join us on <b>November
18th (Monday)</b> at <b>noon</b> (from 12:00 pm to 1:00 pm)
in the <b>Nebula Room</b> (PHYS 3027).</p>
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<p><span><span class="gmail-Y8pC0"></span></span></p>
<div aria-describedby="tt-display-name-field" class="gmail-YysZRb"
align="center"><b>Michela Lai, PhD<br>
</b></div>
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<p align="center">Monday, 12:00 pm, Nebula Room (PHYS 3027)</p>
<div dir="auto" align="center"><b>Diving into the unknown: rare
event searches with argon detectors</b></div>
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<div align="center">Liquid argon, a key player in our quest to
unravel the physics beyond the standard model, is indeed one
of the most sensitive targets for GeV-scale dark matter
candidates, such as Weakly Interacting Massive Particles
(WIMPs), as demonstrated by the DEAP-3600 experiment and
DarkSide-50 experiment. The unique R&D has led to the
design of the next experiment within the Global Argon Dark
Matter collaboration, DarkSide-20k, currently under
construction at LNGS. Its 50-tonne ultra-pure argon target
will allow for investigating for the very first time in
argon dark matter-nucleon cross-section as low as 7.4 x
10^{-48} cm^2 for a WIMP mass of 1 TeV/c^2 in a 200 t yr
run. At the same time, the first calibrations on superheated
argon are proceeding within the Scintillating Bubble Chamber
demonstrator, whose setup at <span class="gmail-il">SNOLAB</span> shows
a projected sensitivity down to 10^{−43} cm^2 at 1 GeV/c^2.
On the other hand, argon has served as an active veto for
the neutrinoless double beta decay of 76-Germanium, first in
GERDA and now in LEGEND-200, whose collaboration recently
showed their newest lower limit at 1.0 x 10^{27} year,
confirming the substantial background rejection possible
thanks to the argon bath and pushing for the extension of
this technology also to the future LEGEND-1000, where the
argon would be extracted in the URANIA plant, aiming for the
same mBq/kg argon radioactivity level also at the very base
of DarkSide-20k's success. </div>
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<p>If you’re interested in sharing your work as a speaker,
please feel free to add your name to the spreadsheet [<a
href="https://docs.google.com/spreadsheets/d/1N3ncf43jdB6aHYHhyWmyHMycxDg4_phHZXLkQvviO0o/edit?usp=sharing"
target="_blank" moz-do-not-send="true">Google Sheet</a>].</p>
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<div>Best,</div>
<div>Pooyan</div>
<span><span>
<div>Physics and Astronomy Student Seminar (PASS)</div>
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