One of the world's biggest #physics experiments, found on @CERN 's #LHC . We use #HighEnergyPhysics to study the #universe ✨ #Science papers: @cmspapers
Cessy, France
Joined November 2009
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When rare decays enter the precision era...
The CMS collaboration CERN keeps seeing the same intriguing pattern in decays of bottom quarks to strange quarks and two muons: systematically lower rates than predicted by the Standard Model!
👉Read more cms.cern/news/when-rare-deca…
🧩 Big science, small scale!
We built a miniature version of the CMS detector at CERN, from multiple 3D-printed parts.
👉 Watch the timelapse of the assembly process here: youtu.be/HVJu10uq1z0
📃 Read the story behind the design: cylindricalonion.web.cern.ch…
🛠️ Every upgrade begins with a goodbye.
As CMS prepares for the High-Luminosity LHC era, long-serving detector components are being retired.
Read Sioni Summers' blog on removing part of the CMS trigger system during this exciting transition: cylindricalonion.web.cern.ch…
🪡A needle in the pileup: CMS revives diffractive physics with tagged protons using its iconic Roman Pot detector system.
👉Read more: cms.cern/news/needle-pileup-…
Step inside CMS from wherever you are, this September 25th, for European Researchers’ Night. Book a LIVE virtual visit of the detector and bring your questions straight to us.
🕑 Virtual visit slots available from 14:00 to midnight CEST
👉 Book yours now: cms.cern/interact-with-cms/b…
🤔How do you spot a decay that is expected just 1–100 times in 10 million decays? CMS is using huge amounts of data collected between 2016-26 to search for one such process: a W boson decaying into three charged hadrons.
👉Read the full briefing here: cms.cern/news/w-bosons-simpl…
How to catch subatomic particles wakeboarding in the universe’s most perfect liquid! 🌊
The hottest, densest, and most perfect fluid in the universe behaves in a surprisingly similar way to water rippling around a speedboat. 🚤
Read the blog: cylindricalonion.web.cern.ch…
Four gets you more: understanding the strong force with four-way energy correlations.
CMS now has deeper insight into QCD dynamics after measuring, for the first time, energy correlations among four particles within a jet!
Read more: cms.cern/news/four-gets-you-…
The 43rd International Conference on High Energy Physics (#ICHEP2026) in Natal may have wrapped up, but our coverage of the exciting results presented there is far from over!
The CMS Collaboration announced 28 new results.
📸 Credits to ICHEP 2026
In search of unknown forces 🔎
CMS studies pairs of heavy force-carrying particles – W and Z bosons – to set the world’s most stringent constraints on anomalous interactions between them.
📍Read more: cms.cern/news/search-unknown…
The LHC as a lepton collider! 🎇 CMS reports the first observation of scattering between two leptons (electron–electron or muon–muon pairs) emitted from protons, using data collected from 2016 to 2026.
👉 Read more in the CMS breifing: cms.cern/news/lepton-lepton-…
Hunting for a Hidden Side of the Higgs. A new CMS result searches for unexpected Higgs connections in events with four bottom quarks, probing possible links between ordinary matter and dark matter.
Read more in the CMS Briefing: cms.cern/news/hunting-hidden…
Our scientists are ready to be challenged! ⏳
Can they explain their complex research in just one minute? Let's find out ➡️ youtu.be/VkLXzxjGt3w?si=vEal…
⚪⚪Photon pairs as headlights! A new result from CMS uses events containing two photons and two bottom quarks to search for heavy partners of the Higgs boson.
Read more in the CMS briefing: cms.cern/news/two-photons-il…
🤔Two Higgs, or not two Higgs?🤔 CMS presents the next act in the search for Higgs-boson pairs, venturing deeper into their decays to bottom quarks and tau leptons. The game's afoot!
Read more in the CMS Briefing: cms.cern/news/two-higgs-or-n…
🧐 Elementary, my dear Higgs? CMS has studied the highest-energy lepton pairs ever recorded to test whether the Higgs boson is made of even smaller constituents.
Read more in the CMS briefing: cms.cern/news/higgs-boson-tr…
