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<!DOCTYPE>
<html>
<head>
<meta http-equiv="content-type" content="application/xhtml+xml; charset=utf-8" />
<title>MATHUSLA</title>
<link rel="stylesheet" href="styles/main.css">
</head>
<body class="oneColumn">
<div id="container">
<div id="header">
<div style="text-align: center;"><br/>
<br/>
<img src="images/logo.png" alt="" title="mathusla logo" style="width: 182px; height: 40px;" /><br/>
<br/>
</div>
<h1 style="text-align: center;">The MATHUSLA Experiment</h1>
<br/>
MATHUSLA (Massive Timing Hodoscope for Ultra Stable neutraL pArticles)
is a proposed detector at CERN with the aim of going online with the
HL-LHC upgrade to the Large Hadron Collider in ~2025. <br/>
<br/>
Long-lived particles are a common feature in many theories of particle
physics that extend the Standard Model and could solve mysteries like
why gravity is so weak or the nature of dark matter. <br/>
<br/>
MATHUSLA is a large-scale, relatively simple detector for the HL-LHC
that can detect neutral long-lived particles produced in the 14 TeV pp
collisions. Its location on the surface shields it from backgrounds that
constrain the ability of the MAIN detectors like ATLAS and CMS to look
for many of these kinds of particles. The large size of MATHUSLA would
also allow it to act as a cosmic ray telescope. <br/>
<br/>
<div style="text-align: center;">
<img src="images/geometry.png" alt="geometry"
style="width: 477px; height: 231px;" /><br/>
<br/>
<div style="text-align: left;">
<br/>
<h2>In the Media</h2>
<ul>
<li style="box-sizing: inherit; margin: 0px; padding: 0px; font-size: inherit;"><a
style="box-sizing: inherit; background-color: transparent; line-height: inherit; color: rgb(0, 139, 176); text-decoration: none; cursor: pointer;"
href="https://www.newscientist.com/article/mg24032061-600-particles-crossing-to-our-world-could-open-portal-to-dark-matter-realm/">"Into
the Dark" (New Scientist, December 2018)</a>: popular science
article about Hidden Sectors and new experimental proposals
looking for them, including MATHUSLA. (paywall,<span> </span><a
style="box-sizing: inherit; background-color: transparent; line-height: inherit; color: rgb(0, 139, 176); text-decoration: none; cursor: pointer;"
href="http://tinyurl.com/y8kn36la">PDF
link</a>)<br/>
</li>
<li style="box-sizing: inherit; margin: 0px; padding: 0px; font-size: inherit;"><a
style="box-sizing: inherit; background-color: transparent; line-height: inherit; color: rgb(0, 139, 176); text-decoration: none; cursor: pointer;"
href="https://www.livescience.com/62633-lhc-stray-particles-mathusla-detection.html">"Nuclear
Detectives Hunt Invisible Particles That Escaped the World's
Largest Atom Smasher" (Live Science, 22 May 2018)</a>: popular
news article about the MATHUSLA detector proposal.<br/>
</li>
<li style="box-sizing: inherit; margin: 0px; padding: 0px; font-size: inherit;"><a
style="box-sizing: inherit; background-color: transparent; line-height: inherit; color: rgb(0, 139, 176); text-decoration: none; cursor: pointer;"
href="https://www.quantamagazine.org/how-the-hidden-higgs-could-reveal-our-universes-dark-sector-20170926/">Quanta
Magazine, September 2017</a>: In-depth popular science article
about hidden sectors, long-lived particles and our MATHUSLA
detector proposal. Also picked up by<span> </span><a style="box-sizing: inherit; background-color: transparent; line-height: inherit; color: rgb(0, 139, 176); text-decoration: none; cursor: pointer;"
href="https://www.wired.com/story/hidden-higgs-dark-sector/">Wired
Magazine</a><br/>
</li>
<li style="box-sizing: inherit; margin: 0px; padding: 0px; font-size: inherit;"><a
style="box-sizing: inherit; background-color: transparent; line-height: inherit; color: rgb(0, 139, 176); text-decoration: none; cursor: pointer;"
href="https://physicstoday.scitation.org/doi/10.1063/PT.3.3594">Hidden
worlds of fundamental particles (June 2017)</a>: General
physics audience article in Physics Today (Raman Sundrum, David
Curtin)<br/>
</li>
<li style="box-sizing: inherit; margin: 0px; padding: 0px; font-size: inherit;"><a
style="box-sizing: inherit; background-color: transparent; line-height: inherit; color: rgb(0, 139, 176); text-decoration: none; cursor: pointer;"
href="http://jqi.umd.edu/news/podcast/long-live-mathusla">UMD
JQI Podcast, July 2017</a>: 11 minute podcast where David
Curtin is interviewed about the MATHUSLA proposal
</li>
</ul>
<p><br/>
</p>
<h2>Selected Publications</h2>
<ul>
<li><a href="https://arxiv.org/abs/1606.06298">New Detectors to
Explore the Lifetime Frontier (Chou, Curtin, Lubatti 2016)</a><br/>
This is the first paper where the MATHUSLA idea was proposed.
</li>
<li><a href="https://arxiv.org/abs/1806.07396">Long-Lived
Particles at the Energy Frontier: The MATHUSLA Physics Case
(2018)</a><br/>
This is a large white paper with ~100 authors explaining the
physics case for long-lived particle searches at the LHC and the
motivation for building MATHUSLA.
</li>
<li><a href="https://arxiv.org/abs/1811.00927">A Letter of Intent
for MATHUSLA: a dedicated displaced vertex detector above
ATLAS or CMS (2018)<br/>
</a>Presented to the LHC Experimental Council in August 2018.
</li>
</ul>
<p><br/>
</p>
</div>
</div>
<h2>Recent Talks</h2>
<ul>
<li><a href="https://indico.cern.ch/event/517784/contributions/2550393/attachments/1462673/2259770/The_Lifetime_Frontier_final.pdf#search=lubatti%20AND%20EventID%3A517784">The
lifetime frontier MilleQAN and MATHUSLA</a> (Henry Lubatti, Shanghai
LHCP 2017)
</li>
<li><a href="https://cernbox.cern.ch/index.php/s/x2Ab9xJa2hK6PXO#pdfviewer">MATHUSLA
- Extending the LHC LLP horizon with large but simple apparatus </a>(Erez
Etzion,
</li>
<li><a href="https://drive.google.com/file/d/1Y_8l8ZVL0_0R-t6KxzcNo-4bVS5meJJ0/view?usp=sharing">Particle
Physics at the Lifetime Frontier</a> (Colloquium, David Curtin,
2018)
</li>
</ul>
<p><br/>
</p>
<h2>Frequently Asked Questions</h2>
<a href="https://twiki.cern.ch/twiki/bin/view/MATHUSLA/MATHUSLAFAQ">FAQs
on the twiki</a> (for particle physicists)<br/>
<br/>
<br/>
<h2>Collaboration</h2>
The collaboration includes several dozen physicists from about a dozen
different <br/>
countries all over the world. <br/>
<br/>
MATHUSLA Spokesperson: Henry Lubatti<br/>
<br/>
Collaboration contact email: <a href="mailto:[email protected]">[email protected]</a><br/>
<br/>
<table border="1" style="width: 520px; height: 468px; text-align: left; margin-left: auto; margin-right: auto;">
<tbody>
<tr align="center">
<td><img src="images/IMG_2719_preview.jpg"
alt=""
style="width: 508px; height: 378px;"/></td>
</tr>
<tr>
<td>
<div class="oneColFixCtrHdr"><em>Part of the collaboration got
together at the first official collaboration meeting in
August 2018 at the Simons Center for Geometry and Physics in
Stony Brook, NY</em>
</div>
</td>
</tr>
</tbody>
</table>
<div style="text-align: center;"><br/>
</div>
<br/>
<div style="text-align: center;"><br/>
<br/>
</div>
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<table width="90%" border="0" align="center">
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<td align="left">LEFT<br/>
</td>
<td style="width: 168.433px;">MIDDLE<br/>
</td>
<td align="right" style="width: 192.2px;">RIGHT<br/>
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