Show Notes
They Built the Quietest Place on Earth to Find Dark Matter
One event in 220 days. That is what the search for dark matter looks like right now.
In this episode I talk with Rick Gaitskell, professor of physics at Brown University and a leader on the LZ dark matter experiment, about what it takes to build a detector that can see almost nothing at all: seven tonnes of liquid xenon, a mile of rock in an old gold mine, and shielding so careful that the radon seeping out of ordinary concrete counts as a serious enemy. We get into why the field spent decades hunting the WIMP, what happens to a 3.4 sigma result when you look at it honestly, and why a single event, however beautiful, cannot tell you what you want it to tell you.
We also talk about the human side of a project like this. The grad student who waited nine years for data. The physicist who walked away from investment banking. The uncomfortable fact that something like ninety-five percent of research does not work out, and what keeps people going anyway.
And the line that sits under all of it: we only get one damn universe, and nature does not care whether your theory is beautiful.
Chapters
00:00 One event in 220 days
06:00 Why they named it a WIMP
13:00 Ninety-five percent of research fails
20:00 He left investment banking for this
23:00 You are less than five percent of the universe
30:00 The fifty-year-old idea nobody can kill
45:00 The grad student who waited nine years
58:00 A gold mine and the quietest place on Earth
1:06:00 The radon in your basement is the enemy
1:21:00 The assumption that was hiding the signal
1:32:00 The event, and why they will not call it blinded
1:40:00 How 3.4 sigma becomes 2.6
1:49:00 The fog nobody can scrub
1:56:00 The dark matter we detected in 1956
My books
Losing the Nobel Prize (memoir)
Think Like a Nobel Prize Winner
Focus Like a Nobel Prize Winner
Galileo's Dialogue (first-ever audiobook)
Socials
Twitter/X: https://x.com/BrianKeating
Substack: https://briankeating.substack.com
Blog: https://briankeating.com/blog
Audio-only: https://briankeating.com/podcast
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