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#CMSPaper

3 posts3 participants0 posts today
Freya Blekman<p>What and how precisely will the ATLAS and CMS experiments be able to measure 15 years from now? This is an important factor in deciding if and what kind of collider to build in the future. This <a href="https://sciencemastodon.com/tags/CMSPaper" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>CMSPaper</span></a> 1396 gives those projections for some benchmark Higgs physics results arxiv.org/abs/2504.00672</p>
Freya Blekman<p><a href="https://sciencemastodon.com/tags/CMSPaper" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>CMSPaper</span></a> 1398 is a meta-analysis of CMS results with Higgs bosons, Z and W bosons, and top quarks. It is interpreted in the Standard Model Effective theory looking for subtle changes with respect to the standard model predictions that are seen over more than one signature arxiv.org/abs/2504.02958</p>
Freya Blekman<p>More than 99% top quarks decay to a W boson+bottom quark. This <a href="https://sciencemastodon.com/tags/CMSPaper" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>CMSPaper</span></a> checks top quark decays to Higgs boson+light quark. The standard model predicts that's super-rare, but many new physics models predict it happens more. We measure it as less than 0.056% of top quarks. </p><p>arxiv.org/abs/2407.15172</p>
Freya Blekman<p><a href="https://sciencemastodon.com/tags/CMSPaper" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>CMSPaper</span></a> 1351 describes how CMS decides to keep which 1000 (ish) out of the 40 million LHC potential collisions. Obviously, we don't want to discard anything exciting, so it's not as easy as it sounds, and there are strong computer constraints arxiv.org/abs/2410.17038</p>
Freya Blekman<p>Just seeing Higgs bosons is not really enough to check how consistent it is with the predictions of the standard model. This <a href="https://sciencemastodon.com/tags/CMSPaper" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>CMSPaper</span></a> compares the kinematic behaviour of Higgs bosons for different decay signatures - to check consistency in production and decay 😎 arxiv.org/abs/2504.13081</p>
Freya Blekman<p>We are always looking for new particles that we can use to study the quark gluon plasma. This <a href="https://sciencemastodon.com/tags/CMSPaper" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>CMSPaper</span></a> shows the phi meson (a bound state consisting of a strange quark and strange antiquark) is quite a useful "hard probe" (I know, jargon) to measure the QGP in an extra way arxiv.org/abs/2504.05193</p>
Freya Blekman<p>This <a href="https://sciencemastodon.com/tags/CMSPaper" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>CMSPaper</span></a> explores if we see top quark decays into an up (or charm) quark, a muon, and a tau lepton, which would indicate charged lepton flavour violation. No such decays were observed arxiv.org/abs/2504.08532</p>
Freya Blekman<p>Jets, particle sprays coming from quarks and gluons, can't easily pass through the blob that is the quark-gluon plasma, a phenomenon called "jet quenching". This <a href="https://sciencemastodon.com/tags/CMSPaper" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>CMSPaper</span></a> investigates if that also happens with an alternative method where the angles between two jets are used arxiv.org/abs/2504.08507</p>
Freya Blekman<p><a href="https://sciencemastodon.com/tags/CMSPaper" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>CMSPaper</span></a> 1395 observes a totally unexpected extra behaviour of <a href="https://sciencemastodon.com/tags/topquark" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>topquark</span></a> pair production; we see significantly more top quarks than we expect, and they kind of behave like they come from something particle-like. We are reluctant to just call it Topponium, but very exciting! arxiv.org/abs/2503.22382</p>
Freya Blekman<p>What and how precisely will the ATLAS and CMS experiments be able to measure 15 years from now? This is an important factor in deciding if and what kind of collider to build in the future. This <a href="https://sciencemastodon.com/tags/CMSPaper" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>CMSPaper</span></a> 1396 gives those projections for some benchmark Higgs physics results arxiv.org/abs/2504.00672</p>
Freya Blekman<p>Top quarks decay more than 99% of the time to a W boson and a bottom quark. This <a href="https://sciencemastodon.com/tags/CMSPaper" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>CMSPaper</span></a> 1334 checks for the decay of top quarks to a Higgs boson and a light quark. The standard model predicts this happens super-infrequently (10-15 chance!), but many new physics models predict it happens more often. We measure it as less than 0.056% of top quarks, if it happens at all. </p><p><a href="https://arxiv.org/abs/2407.15172" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="">arxiv.org/abs/2407.15172</span><span class="invisible"></span></a></p>
Freya Blekman<p><a href="https://sciencemastodon.com/tags/CMSPaper" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>CMSPaper</span></a> 1351 describes how CMS decides to keep which 1000 (ish) out of the 40 million LHC potential collisions. Obviously, we don't want to discard anything exciting, so it's not as easy as it sounds, and there are strong computer constraints <a href="https://arxiv.org/abs/2410.17038" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="">arxiv.org/abs/2410.17038</span><span class="invisible"></span></a></p>
Freya Blekman<p>Just seeing Higgs bosons is not really enough to check how consistent it is with the predictions of the standard model. This <a href="https://sciencemastodon.com/tags/CMSPaper" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>CMSPaper</span></a> compares the kinematic behaviour of Higgs bosons for different decay signatures - to check consistency in production and decay 😎 <a href="https://arxiv.org/abs/2504.13081" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="">arxiv.org/abs/2504.13081</span><span class="invisible"></span></a></p>
Freya Blekman<p><a href="https://sciencemastodon.com/tags/CMSPaper" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>CMSPaper</span></a> 1395 observes a totally unexpected extra behaviour of <a href="https://sciencemastodon.com/tags/topquark" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>topquark</span></a> pair production; we see significantly more top quarks than we expect, and they kind of behave like they come from something particle-like. We are reluctant to just call it Topponium, but very exciting! arxiv.org/abs/2503.22382</p>
Freya Blekman<p>What and how precisely will the ATLAS and CMS experiments be able to measure 15 years from now? This is an important factor in deciding if and what kind of collider to build in the future. This <a href="https://sciencemastodon.com/tags/CMSPaper" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>CMSPaper</span></a> 1396 gives those projections for some benchmark Higgs physics results arxiv.org/abs/2504.00672</p>
Freya Blekman<p><a href="https://sciencemastodon.com/tags/CMSPaper" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>CMSPaper</span></a> 1398 is a meta-analysis of CMS results with Higgs bosons, Z and W bosons, and top quarks. It is interpreted in the Standard Model Effective theory looking for subtle changes with respect to the standard model predictions that are seen over more than one signature arxiv.org/abs/2504.02958</p>
Freya Blekman<p>One of the problems with the standard model is that we use different mathematics for low-energy than for high-energy strong force calculations. The transition region is not so easy. <a href="https://sciencemastodon.com/tags/CMSPaper" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>CMSPaper</span></a> 1392 measures the transition region for the first time in LHC heavy ion collisions arxiv.org/abs/2503.19993</p>
Freya Blekman<p>We are always looking for new particles that we can use to study the quark gluon plasma. This <a href="https://sciencemastodon.com/tags/CMSPaper" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>CMSPaper</span></a> shows the phi meson (a bound state consisting of a strange quark and strange antiquark) is quite a useful "hard probe" (I know, jargon) to measure the QGP in an extra way <a href="https://arxiv.org/abs/2504.05193" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="">arxiv.org/abs/2504.05193</span><span class="invisible"></span></a></p>
Freya Blekman<p>This <a href="https://sciencemastodon.com/tags/CMSPaper" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>CMSPaper</span></a> explores if we see top quark decays into an up (or charm) quark, a muon, and a tau lepton, which would indicate charged lepton flavour violation. No such decays were observed <a href="https://arxiv.org/abs/2504.08532" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="">arxiv.org/abs/2504.08532</span><span class="invisible"></span></a></p>
Freya Blekman<p>Jets, particle sprays coming from quarks and gluons, can't easily pass through the blob that is the quark-gluon plasma, a phenomenon called "jet quenching". This <a href="https://sciencemastodon.com/tags/CMSPaper" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>CMSPaper</span></a> investigates if that also happens with an alternative method where the angles between two jets are used <a href="https://arxiv.org/abs/2504.08507" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="">arxiv.org/abs/2504.08507</span><span class="invisible"></span></a></p>
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