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#CMSPaper

11 posts7 participants1 post today
Freya Blekman<p>Supersymmetry is a significant theory as well as a benchmark, because at the LHC, supersymmetry helps predict the behaviour of undiscovered particles. This <a href="https://fediscience.org/tags/nullresult" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>nullresult</span></a> <a href="https://fediscience.org/tags/CMSPaper" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>CMSPaper</span></a> focused on the supersymmetry partner of the top quark, expected to cause busy collisions arxiv.org/abs/2506.08825</p>
Freya Blekman<p>You may be aware that CMS sees a (not significant enough) tantalising excess in signatures that are consistent with two unstable undiscovered particles coming from another more massive particle. It is not at high enough statistical evidence for us to pop the champagne, but this <a href="https://fediscience.org/tags/CMSPaper" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>CMSPaper</span></a> does further theoretical comparisons of theories that try to explain these four-jet events<br><a href="https://arxiv.org/abs/2507.17884" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="">arxiv.org/abs/2507.17884</span><span class="invisible"></span></a></p>
Freya Blekman<p>Top quarks are a great place to test the standard model in detail (because the calculations are relatively easy as top is so much heavier than other quarks). That is a simplification, and this <a href="https://fediscience.org/tags/CMSPaper" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>CMSPaper</span></a> doesn't make it. It examines collisions where Z bosons and top quark pairs are made together and also checks for different behaviour for top versus the other quark types <a href="https://arxiv.org/abs/2507.17498" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="">arxiv.org/abs/2507.17498</span><span class="invisible"></span></a></p>
CMS Publications<p><a href="https://mastodon.social/tags/CMSpaper" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>CMSpaper</span></a> soon on arXiv: Search for b hadron decays to long-lived particles in the CMS endcap muon detectors (CERN-EP-2025-166) <a href="https://cds.cern.ch/record/2939926" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="">cds.cern.ch/record/2939926</span><span class="invisible"></span></a> <a href="https://mastodon.social/tags/NewPhysics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>NewPhysics</span></a></p>
Freya Blekman<p>How do particles go from few quarks/gluons to a spray of particles called a jet? Such hadronisation processes are difficult to calculate, and that means also difficult to understand when we don't have the math :)</p><p>This <a href="https://fediscience.org/tags/CMSPaper" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>CMSPaper</span></a> measures that in detail for jets coming from charm quarks. It specifically picked a range where the particles inside the jets can be analytically described. That way this paper helps to improve the physics description of jets and hadronisation! <a href="https://arxiv.org/abs/2507.13469" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="">arxiv.org/abs/2507.13469</span><span class="invisible"></span></a></p>
Freya Blekman<p>Using another particles to measure the quark gluon plasma has the 'interesting' jargon of Hard Probe for the particle that is used. This <a href="https://fediscience.org/tags/CMSPaper" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>CMSPaper</span></a> shows for the first time that Z bosons can be used as Hard Probes to measure the Quark Gluon Plasma. Having many different ways to measure this specific state of matter (just like gas, liquid, etc) is important, as each hard probe measures at a different time scale. Z bosons seem to leave a wake in the QGP even!</p><p><a href="https://arxiv.org/abs/2507.09307" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="">arxiv.org/abs/2507.09307</span><span class="invisible"></span></a></p>
Freya Blekman<p>Particle physicists use simulations to distinguish new findings from background collisions at the LHC. This <a href="https://fediscience.org/tags/CMSPaper" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>CMSPaper</span></a> examines the effectiveness of these simulations, identifying their strengths and weaknesses to select the best tools for specific tasks. More at arxiv.org/abs/2505.17850</p>
Freya Blekman<p>(almost) every <a href="https://fediscience.org/tags/CMSPaper" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>CMSPaper</span></a> has to deal with the fact that not every LHC collision is the interesting signal that the paper focuses on. And this specific CMS paper shows how machine learning can make this background identification better! arxiv.org/abs/2506.08826</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://fediscience.org/tags/CMSPaper" class="mention hashtag" rel="nofollow noopener" 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>This <a href="https://fediscience.org/tags/CMSPaper" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>CMSPaper</span></a> examines an extension to the standard model that predicts extra particles related to Dark Matter that interact with the Higgs boson. It focuses on detecting these extensions through Higgs boson decays to taus, a challenging experimental method. arxiv.org/abs/2506.04431</p>
Freya Blekman<p>Supersymmetry is a significant theory as well as a benchmark, because at the LHC, supersymmetry helps predict the behaviour of undiscovered particles. This <a href="https://fediscience.org/tags/nullresult" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>nullresult</span></a> <a href="https://fediscience.org/tags/CMSPaper" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>CMSPaper</span></a> focused on the supersymmetry partner of the top quark, expected to cause busy collisions arxiv.org/abs/2506.08825</p>
Freya Blekman<p>This <a href="https://fediscience.org/tags/CMSPaper" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>CMSPaper</span></a> examines if there are extra unexpected interactions between muons/electrons and bottom/strange quarks. It also checks if there are differences between muons and electrons (plot). We don't see anything significant, but there are some differences. arxiv.org/abs/2506.13565</p>
Freya Blekman<p>Particle physicists use simulations to distinguish new findings from background collisions at the LHC. This <a href="https://fediscience.org/tags/CMSPaper" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>CMSPaper</span></a> examines the effectiveness of these simulations, identifying their strengths and weaknesses to select the best tools for specific tasks. More at arxiv.org/abs/2505.17850</p>
Freya Blekman<p>This <a href="https://fediscience.org/tags/CMSPaper" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>CMSPaper</span></a> examines if there are extra unexpected interactions between muons/electrons and bottom/strange quarks. It also checks if there are differences between muons and electrons (plot). We don't see anything significant, but there are some differences. arxiv.org/abs/2506.13565</p>
Freya Blekman<p>This <a href="https://fediscience.org/tags/CMSPaper" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>CMSPaper</span></a> examines an extension to the standard model that predicts extra particles related to Dark Matter that interact with the Higgs boson. It focuses on detecting these extensions through Higgs boson decays to taus, a challenging experimental method. arxiv.org/abs/2506.04431</p>
Freya Blekman<p>(almost) every <a href="https://fediscience.org/tags/CMSPaper" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>CMSPaper</span></a> has to deal with the fact that not every LHC collision is the interesting signal that the paper focuses on. And this specific CMS paper shows how machine learning can make this background identification better! arxiv.org/abs/2506.08826</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://fediscience.org/tags/CMSPaper" class="mention hashtag" rel="nofollow noopener" 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>This <a href="https://fediscience.org/tags/CMSPaper" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>CMSPaper</span></a> examines an extension to the standard model that predicts extra particles related to Dark Matter that interact with the Higgs boson. It focuses on detecting these extensions through Higgs boson decays to taus, a challenging experimental method. arxiv.org/abs/2506.04431</p>
Freya Blekman<p>This <a href="https://fediscience.org/tags/CMSPaper" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>CMSPaper</span></a> examines if there are extra unexpected interactions between muons/electrons and bottom/strange quarks. It also checks if there are differences between muons and electrons (plot). We don't see anything significant, but there are some differences. arxiv.org/abs/2506.13565</p>
Freya Blekman<p>If you want to study fast-moving particles that decay to quarks, you will likely need to find their separate decay products inside a big blob called a jet. This <a href="https://fediscience.org/tags/CMSPaper" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>CMSPaper</span></a> uses a theory trick called a "Lund plane" to improve identification and reconstruction of those separate substructure components inside a jet <a href="https://arxiv.org/abs/2507.07775" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="">arxiv.org/abs/2507.07775</span><span class="invisible"></span></a></p>
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