Tag: Run 2
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The Higgs boson with toppings
The Higgs boson is deeply connected to the mechanism that generates the masses of elementary particles.
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The “Large Photon Collider”: CMS observes scattering of light by light at the LHC
CMS scientists discover some of the rarest collisions that the LHC can produce – such as the scattering of light by light – and learn more about the quantum nature of electromagnetism, search for new particles, and much more.
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A tale of two Higgs: The quest for production of Higgs boson pairs at CMS
In a recent result, the CMS experiment has combined a comprehensive set of searches for the production of not one but two Higgs bosons – the result is a significant step towards observation of this elusive process, and constitutes a legacy of the Run 2 data taking era at the LHC.
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Clocking nature’s heaviest elementary particle: Do top quarks play by Einstein’s rules the whole day and night?
In a first measurement of its kind at the LHC, the CMS experiment tests whether top quarks adhere to Einstein’s special theory of relativity, and improves the bounds on noncompliance by up to a factor of one hundred with respect to previous results.
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CMS delivers the best-precision measurement of the W boson mass at the LHC
In an extraordinary feat of precision physics, CMS measures the mass of the W boson, and finds it to be in good agreement with the prediction by the Standard Model of particle physics.
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Hidden signals of new physics in events with a high energy lepton pair
A primary goal of the Large Hadron Collider (LHC) is to hunt for evidence of beyond the Standard Model (BSM) dynamics through deviations from the Standard Model (SM) predictions.
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Artificial neural networks in search for excited tops
With the discovery of the Higgs boson in 2012, an important piece in our puzzle to understand the Universe was found.
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Exploring new frontiers: Searching for a heavy Higgs boson decaying to four leptons
The Higgs boson is a fascinating elementary particle, and its discovery twelve years ago cemented the standard model (SM) of particle physics as the most accurate description of nature at and below the electroweak energy scale.
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Journey through the Quark Gluon Plasma
At the LHC, lead ions are smashed together at extremely high speeds to create a unique state of matter called the quark gluon plasma.
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Testing universality – particle equality at stake
In the world of elementary particles, there are twelve generic types of fermions (spin ½ particles): 3 up-type quarks, 3 down-type quarks, 3 charged leptons, and 3 neutrinos.