Tag: Physics briefings
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What’s inside quarks? CMS looks deeper
CMS probes the inside of quarks down to distances of 10–20 m – smaller than ever before – searching for potential more fundamental building blocks within them.
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Testing the heaviest quark’s interaction with light
The CMS Collaboration has completed the most precise measurement to date of top-quark production in association with a photon Using the full Run 2 dataset of the LHC and advanced machine learning techniques, the CMS Collaboration has delivered the most precise measurement to date of top quark production in association with a photon.
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CMS weighs the Higgs boson using flashes of light
The CMS experiment reports a new measurement of the Higgs boson mass in the decay into two photons, improving the precision of this result over earlier measurements by refining detector calibration and new analysis techniques.
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CMS observes rare Z boson pair production
For the first time, the CMS experiment has observed the rare electroweak production of two Z bosons in association with two jets.
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CMS observes another indication of a momentary union of the heaviest quarks, now in the lepton + jets final state
The CMS experiment provides the first confirmation of the excess observed in top quark-antiquark production that is consistent with the short-lived bound state – toponium – decaying to a lepton + jets final state.
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Does the Higgs look a little odd lately?
The CMS experiment has performed a new search for Charge-Parity violation in Higgs boson decays to tau leptons, shedding light on the origin of matter.
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The tangled dance of Higgs boson decays
For the first time, the CMS experiment probes quantum entanglement in Higgs boson decays to a pair of Z bosons.
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Unlocking the vault of new physics
In Run 3, CMS expanded its trigger program to enhance capturing long-lived particles that decay far away from the point of collision – broadening the search for physics beyond the Standard Model.
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Double the doublet, shake well, break one, and keep the other intact: welcome, dark scalars!
For the first time ever, the CMS experiment has designed a dedicated analysis using parametrised machine learning to look for new dark particles that don’t socialize with Standard Model fermions, one of them being a favourite candidate in the search for dark matter.
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First measurements of vector boson scattering at 13.6 TeV
The CMS Collaboration reports the first measurements of the production of same-sign WW and WZ boson pairs in association with two jets at 13.6 TeV, using data collected during 2022–2024. One of the most powerful probes of the Higgs mechanism and the electroweak force is a rare process known as vector boson scattering (VBS).