Tag: CMS
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Oxygen collisions at the LHC show new indications of extreme state of matter
One year on from the first-ever collisions of oxygen at the Large Hadron Collider (LHC), the main LHC Collaborations – ALICE, ATLAS, CMS and LHCb – have each reported signs of the state of matter known as quark–gluon plasma (QGP) originating from these collisions. QGP is a state of matter that forms under intense pressure
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CMS explores subtle matter–antimatter difference using beauty mesons
The CMS experiment uses its largest sample of beauty mesons to date to perform a high-precision test of subtle differences between matter and antimatter
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ATLAS and CMS recognise longstanding industrial partner Hamamatsu Photonics K.K.
With this award, the ATLAS and CMS Collaborations recognise the crucial role Hamamatsu Photonics K.K. has played in the development and production of advanced technologies, as well as the ongoing, deeply rooted partnership that has been established with both experiments over many years. Through this close collaboration, Hamamatsu Photonics has made exceptional contributions to the
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CMS celebrates the winners of its 2025 Awards
Every year, the CMS Collaboration congratulates individuals who have made significant contributions across the experiment by presenting them with a CMS Award. These Awards highlight the essential work done in detector operations, software development, data analysis, and overall efforts made on behalf of the Collaboration. “Within CMS, many colleagues make contributions that go beyond the
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Efficiency meets environmental responsibility: commissioning CERN’s primary CO₂ cooling circuit
The ATLAS and CMS detectors require ultra-low, stable temperatures to protect their sensitive electronics. Traditional cooling systems rely on synthetic refrigerants like hydrofluorocarbons (HFCs), which, while effective, have a global warming potential thousands of times greater than CO₂. Seeking a sustainable alternative, CERN has turned to CO₂ itself – a natural refrigerant with a far
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Final collisions, new horizons
In the early hours of Sunday, 14 June, the experiments at the Large Hadron Collider (LHC) had their last hurrah. In the control rooms of ALICE, ATLAS, CMS and LHCb – the four major experiments at the accelerator – scientists watched the final collisions burst across their screens like colourful fireworks. The collisions for physics
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Smarter decisions at the speed of physics
Smart and fast decision making is key when dealing with the onslaught of collisions at the LHC. At the High-Luminosity LHC (HiLumi LHC), the ATLAS and CMS experiments are expected to process detector data at rates corresponding to roughly a quarter of the 2025 global internet traffic. All in real time, as part of the
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CMS looks deep inside quarks
The CMS Collaboration has probed deep inside quarks to search for potential building blocks within them
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CMS strengthens the case for toponium
A new independent measurement by the CMS experiment at the LHC is consistent with the existence of the most massive composite particle ever observed, the momentary union of a top quark and its antiquark
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CMS welcomes new management for 2026–2028
With more than 6000 scientists, engineers, technicians, administrators and students, CMS is one of the world’s largest scientific collaborations. From 1 January 2026 to 31 August 2028, Anadi Canepa has the important role of representing the Collaboration as its Spokesperson. Joining her as deputies are Hafeez Hoorani, who continues in his present role until 31