Our kind of biscuit tray — but with hexaboards for the future High Granularity Calorimeter (HGCAL), planned for the Hi-Lumi LHC upgrade. The increased granularity of HGCAL will help better distinguish signals from different particles.⚛️.🏆 HGCAL Image of the Month.📸 HGCAL team

All credits to CMS! 📸These event displays are visual representations of particle collisions, reconstructed from signals recorded by CMS. As particles pass through detector, they leave traces, which are processed & transformed into these stunning displays by specialised software.

One photon short! CMS breaks new ground by using AI to hunt for exotic Higgs boson decays. ⚛️ .Read more: #science #HiggsBoson #particlephysics

What are conference talks actually like? 🎙️ . Listen to CMS' physics coordinator, Roberto Salerno, as he explains how CMS is pushing the boundaries of physics in his talk at the EPS Conference 2025. ⚛️.

🤔Could the Higgs boson have a shadowy cousin? CMS is pushing boundaries with #AII in the search for the dark Higgs – a potential link to #darkmatter 😲. 👉To find out more about this study, read the physics briefing on our website: #physics #physicsnews

This tray is part of the CMS MIP Timing Detector (MTD), to be installed around the Tracker for the Hi-Lumi LHC upgrade. With ~35 ps time resolution, it will help CMS maintain event reconstruction accuracy even with 5x more collisions. 🏆MTD Image of the Month.📸A. Benaglia

✨Top Quark: The Lone Traveller✨.In the latest episode of the top quark saga, CMS reveals for the first time how a single top quark is produced in a mode called "t-channel" in a new, uncharted territory: 5.02 TeV! .Read the briefing for more:

The 2025 European Physical Society Conference on High Energy Physics took place in Marseille from 7-11 July 2025, and CMS was there, represented by many scientists & posters! Can our scientists explain their research in less than a minute? Let’s find out:.

CMS goes to the optometrist and learns how to identify electron-positron pairs travelling so closely that their signals get merged!.Read the physics briefing here: This result was presented at the EPS-HEP conference this week!

👀 An intriguing physics spy story – by studying a Higgs boson decaying into two photons, CMS scientists are investigating whether it is going off-script in its interactions. ✨. Find out more by reading our briefing:

Look at tiny hexaboards getting tested!🔬. These are building blocks of the silicon section of CMS high-granularity calorimeter(HGCAL). It will be installed during the upgrade of the detector for Hi-Lumi LHC later this decade, when CMS will have more collision events to capture.

An unexpected duet of heavyweights!.Last year, CMS announced the observation of a top quark antiquark bound state, which could be toponium – this has now been confirmed by the @ATLASexperiment! Roberto Salerno, a physics coordinator of CMS, explains. 👉

RT @CERNpress: [Communiqué de presse] De brèves idylles entre top et antitop observées au LHC. En savoir plus : htt….

RT @CERNpress: [Press Release] Elusive romance of top-quark pairs observed at the LHC. Find out more: https://t.co/….

🎇 The first-ever oxygen collisions at the LHC happened today! he teams at CMS are working to capture the data from these unique collisions. 👇Here you can see one of the first oxygen-oxygen collisions!.🤔 Read more about this special week here:

Its been 13 years since CMS & @ATLASexperiment at @CERN announced the discovery of the Higgs boson, marking a major milestone in our understanding of universe. Watch CMS physicist Ansar explain the discovery and what mysteries remain: .

On each end of the tracker at the centre of the CMS, the bulkhead is the region where all the connections reach the tracker and get the data. A lot of power cables, fibers, and pipes run through this rarely accessed part of the detector. 🏆Tracker Image of the Month.📸 G. Haza

The first ever oxygen and neon LHC collisions are being studied by CMS! 🎇.Here you can see one of the first collisions between protons and oxygen nuclei! There will also be collisions between oxygen nuclei and neon nuclei in the coming days.

🤔What’s 100 times lighter than a proton and hiding in the data? 🔎CMS sets the most sensitive limits yet on ultra-light exotic particles using #MachineLearning and Higgs bosons giving electron pairs!.Read more: #physics #physicsnews #CERN #LHC

CMS takes part in a fun colour run in Cessy, France - the location of the detector! 🏃🏃‍♀️With a bunch of volunteers and a stall, adults and children alike played games and learned about CMS, with dedicated tours to follow! 🥳.