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<blockquote style="position: relative; padding-left: 55px;"><section><a href="https://mastodon.social/users/coreyspowell/statuses/115707858090338863">Corey S Powell (coreyspowell@mastodon.social)'s status on Saturday, 13-Dec-2025 09:41:07 JST</a><a href="https://mastodon.social/@coreyspowell" title="coreyspowell@mastodon.social"><img src="https://gnusocial.jp/avatar/32826-48-20221119233213.webp" width="48" height="48" alt="Corey S Powell" style="position: absolute; left: 0; top: 0;">Corey S Powell</a></section><article><p>New results are in from the huge, underground LZ experiment: We really, really, really have not found dark matter. </p><p>LZ is so sensitive that it can see neutrinos! But still no sign of the hypothetical WIMP dark matter it was designed to detect.</p><p><a href="https://sanfordlab.org/news/lz-sets-worlds-best-hunt-galactic-dark-matter-and-gets-new-look-neutrinos-suns-core" rel="nofollow">https://sanfordlab.org/news/lz-sets-worlds-best-hunt-galactic-dark-matter-and-gets-new-look-neutrinos-suns-core</a> <a href="https://mastodon.social/tags/science" rel="tag">#science</a> <a href="https://mastodon.social/tags/nature" rel="tag">#nature</a> <a href="https://mastodon.social/tags/tech" rel="tag">#tech</a></p></article><footer><a rel="bookmark" href="https://gnusocial.jp/conversation/5949520#notice-11702840">In conversation</a><time datetime="2025-12-13T09:41:07+09:00" title="Saturday, 13-Dec-2025 09:41:07 JST">about 7 months ago</time> <span>from <span><a href="https://mastodon.social/@coreyspowell/115707858090338863" rel="external" title="Sent from mastodon.social via ActivityPub">mastodon.social</a></span></span><a href="https://mastodon.social/@coreyspowell/115707858090338863">permalink</a><h4>Attachments</h4><ol><li><label><a rel="external" href="https://gnusocial.jp/attachment/5557185">LZ uses 10 tonnes of ultrapure, ultracold liquid xenon. If a WIMP hits a xenon nucleus, it deposits energy, causing the xenon to recoil and emit light and electrons that the sensors record. Deep underground, the detector is shielded from cosmic rays and built from low-radioactivity materials, with multiple layers to block (or account for) other particle interactions – letting the rare dark matter interactions stand out.</a></label><br><a href="https://files.mastodon.social/media_attachments/files/115/707/856/927/882/153/original/edd971aa05b3f783.webp" rel="external">https://files.mastodon.social/media_attachments/files/115/707/856/927/882/153/original/edd971aa05b3f783.webp</a></li></ol></footer></blockquote>

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Corey S Powell (coreyspowell@mastodon.social)'s status on Saturday, 13-Dec-2025 09:41:07 JST Corey S Powell
New results are in from the huge, underground LZ experiment: We really, really, really have not found dark matter.
LZ is so sensitive that it can see neutrinos! But still no sign of the hypothetical WIMP dark matter it was designed to detect.
https://sanfordlab.org/news/lz-sets-worlds-best-hunt-galactic-dark-matter-and-gets-new-look-neutrinos-suns-core #science #nature #tech
In conversationabout 7 months ago from mastodon.socialpermalink
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1. LZ uses 10 tonnes of ultrapure, ultracold liquid xenon. If a WIMP hits a xenon nucleus, it deposits energy, causing the xenon to recoil and emit light and electrons that the sensors record. Deep underground, the detector is shielded from cosmic rays and built from low-radioactivity materials, with multiple layers to block (or account for) other particle interactions – letting the rare dark matter interactions stand out.
  https://files.mastodon.social/media_attachments/files/115/707/856/927/882/153/original/edd971aa05b3f783.webp

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