CMS Experiment CERN

The CMS experiment is announcing 28 new results at #ICHEP2026, including two that incorporate 2026 data! 💾 As the conference gets underway in Natal, here's an evolving page featuring highlights of our results: cms.cern/news/cms-ichep…

CMS and ATLAS recognise longstanding industrial partner Hamamatsu Photonics K.K. through the 2026 Industrial Award. Congratulations to this exemplary partnership of science and industry! Find out more: cms.cern/news/cms-and-a…

Do energetic particles prefer one direction as they traverse the dense medium in light-ion collisions? ⬅️↕️➡️ Read more: cms.cern/news/cms-maps-…

How does the charm quark clear its way through the dense quark-gluon plasma? 🔎The CMS Experiment at @CERN investigates: cms.cern/news/probing-c…

Exploring the frontiers of long-lived particles at LLP2026 in Cambridge! 🇬🇧 The CMS group shares their latest results with theorists and other experiments - rare signatures with dedicated reconstruction and triggers, a challenging exploration of exotic physics.

What happens when a particle speeds through some of the hottest matter in the universe?🌡️ CMS reports the first observation of a “wake” created by a fast-moving parton in quark-gluon plasma. 📍Read more: cms.cern/news/wake-part…

14 years after the discovery of the Higgs boson, there is still so much more to learn about it! 🔎 🎥 Watch CMS physicist Ansar Iqbal explain the groundbreaking discovery and what we are looking for next: youtu.be/TZM1k58JWyM?si…

⁉️Where did all the antimatter in our universe go? By studying its largest sample of B mesons to date, CMS is taking a precise look at one of the biggest mysteries in physics. Read more in our physics briefing: cms.cern/news/where-did…

29th of June 2026 saw the end of the LHC Run 3, and the end of the LHC as we know it! The next time CMS records particle collisions, it will be in 2030, provided by the HL-LHC, and from a very different detector to what we have today. Read more: cms.cern/news/end-run-3

CMS reports the first measurement of ϒ (upsilon) mesons in oxygen-oxygen and neon-neon collisions, revealing strong evidence that even light-ion collisions can create droplets of quark-gluon plasma. Read more in our full briefing: cms.cern/news/y-mesons-…

Science&Art at School! Find out more about this programme, local to CERN here: cms.cern/news/science-a… #artscience #art #science #cern

The CMS Experiment is announcing several new, interesting results at Hard Probes 2026! As the conference gets underway in Nashville, Tennessee, here's an evolving page featuring a summary a technical description of the highlights: cms.cern/news/cms-hard-…

and forward to what still lies ahead. The week was about momentum as much as reflection: celebrating how far we have come while turning toward bringing the LHC program to fruition and building the High-Luminosity LHC. 2/2

A quick look back at the June CMS Week, a week where the CMS collaboration came together for a week unlike those before it. With LHC operations drawing to a close and Long Shutdown 3 about to begin, it was the right moment to take stock — to look back at what we have built 1/2

The worldwide CMS Collaboration is deeply saddened by the passing of Belgian theoretical physicist François Englert at the age of 93. Read more here: cms.cern/news/cms-colla…

🥳What a wonderful opportunity to celebrate together at the annual CMS Summer Party!🥳 During CMS Week at CERN this June, the collaboration gathered for its annual summer event — an evening away from the sessions for food, conversation, and karaoke 🎤

Three bosons walk onto the stage... CMS explores rare collisions that produce three W or Z bosons at once, searching for unexpected twists that could reveal new physics. Read the full briefing here: cms.cern/news/looking-n…

👏Well done to all the students and early career researchers who presented their posters during the June CMS Week! 👏

🏁Ready, Set, Go!🏁 CMSers raced (but no running!) across the detector site last week during CMS Week to complete a unique treasure hunt and learn about the extensive preparation underway for #HiLumi at CMS! ✨Follow us for more on the journey to High Luminosity at CMS✨

CMS celebrated its 2025 awardees, recognising their outstanding contributions to the collaboration! Among them, a team was honoured for their dedication, and professionalism, which ensured the successful safeguarding of a critical detector component: cms.cern/news/cms-award…