CMS Experiment CERN

One of the world's biggest #physics experiments, found on @CERN 's #LHC . We use #HighEnergyPhysics to study the #universe ✨

#Science papers: @cmspapers

[CMS Experiment CERN @CMSExperiment]

Heavy-ion collisions at the LHC create a plasma that existed in the early universe. For the first time, CMS is using “event-shape engineering” to investigate how charm quarks fly in the expanding geometry of this extraordinary medium.

Read more: https://t.co/TR93j2pXCb

[CMS Experiment CERN @CMSExperiment]

The CMS Collaboration has presented 6 new results at the 19th International Workshop on Top Quark Physics (TOP 2026), held from October 5 to 9, 2026, in the Antalya Region of Türkiye.

Explore the results and their technical description here: https://t.co/wkUk32ukg7

[CMS Experiment CERN @CMSExperiment]

A breakthrough is not just about the discoveries we make today, but also about empowering the people who will make tomorrow's discoveries possible.

Congratulations to the inaugural cohort of the CMS Breakthrough Prize PhD Awards 2026!

Full story here: https://t.co/rf66ETaVP6

[CMS Experiment CERN @CMSExperiment]

Incredible views underground, as teams are carrying out the complex work needed to prepare the CMS detector at @CERN for the High-Luminosity era.

📷 Andres Delannoy

#particlephysics #scienceinaction #HiLumiLHC

[CMS Experiment CERN @CMSExperiment]

We only have moments to decide which collisions are worth keeping. With more ideas than researchers and more data than we can store, the big question is: how do we make sure we don’t throw away the discovery we’re not yet looking for?

👉 Full blog here: https://t.co/l4DDwTp2ER

[CMS Experiment CERN @CMSExperiment]

Could the invisible leave footprints in our detectors?
CMS performs the first collider search for "inelastic dark matter" in the case where dark-matter particles travel a measurable distance before decaying into a pair of low-momentum electrons.
Read more: https://t.co/9u7VH3JFAB

[CMS Experiment CERN @CMSExperiment]

Welcome Tae-Jeong Kim, the new Deputy Spokesperson alongside Florencia Canelli and Spokesperson Anadi Canepa for the CMS Collaboration for 2026-2028!

Thanks to outgoing Deputy Spokesperson Hafeez Hoorani for representing CMS from 2024–2026.

Read more: https://t.co/ioW9ZUrj23

[CMS Experiment CERN @CMSExperiment]

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 https://t.co/WzG6cb1moN

[CMS Experiment CERN @CMSExperiment]

Model originally designed by James Wetzel and made available by Alex Iribarren

[CMS Experiment CERN @CMSExperiment]

🧩 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: https://t.co/7fvZCEhIxN

📃 Read the story behind the design: https://t.co/Svv2LRq8M4

[CMS Experiment CERN @CMSExperiment]

🛠️ 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: https://t.co/PEjpHxVqoX

[CMS Experiment CERN @CMSExperiment]

🪡A needle in the pileup: CMS revives diffractive physics with tagged protons using its iconic Roman Pot detector system.
👉Read more: https://t.co/Fa0AiWtOZn

[CMS Experiment CERN @CMSExperiment]

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: https://t.co/PBMLYsvP2W

[CMS Experiment CERN @CMSExperiment]

🤔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: https://t.co/ZTS4Uvuj6p

[CMS Experiment CERN @CMSExperiment]

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: https://t.co/Fc65ZNBuPk

[CMS Experiment CERN @CMSExperiment]

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: https://t.co/bYalykJDbO

[CMS Experiment CERN @CMSExperiment]

CMS was out in full force sharing these milestones, delivering:
🎙️ 4 plenary talks by CMS speakers
🗣️ 76 parallel talks by CMS speakers
📊 11 CMS posters, one of which won a Best Poster Award

As always, more exciting physics and detector updates will keep coming, so stay tuned!

[CMS Experiment CERN @CMSExperiment]

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

[CMS Experiment CERN @CMSExperiment]

Highlights include:
💾 3 new results featuring the 2026 collision data
🔍 Several brand new searches