Celebrating John Ellis’s enduring legacy

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Celebrating John Ellis’s enduring legacy

On 31 July, colleagues and friends of John Ellis got together to celebrate his 80th birthday

20 August, 2026

John Ellis wearing a black t-shirt reading "Around the world in 80 orbits"
(Image: CERN)

On 31 July, colleagues and friends of theoretical physicist John Ellis came together to celebrate his 80th birthday and almost 60 years of service to CERN and the wider particle physics community.

“Many of us were amazed to learn of John’s significant impact on fields besides our own,” said physicist Matthew McCullough, Deputy Head of the Theoretical Physics Department. “In many cases, it was the first time we were hearing about the diversity and reach of John’s work.”

Examples of his work highlighted at the event include his 1975 paper kickstarting the search for the Higgs boson, his contributions to establishing the existence of the gluon, his shaping of the physics programmes of the Large Electron–Positron Collider and the Large Hadron Collider, the use of quantum atom interferometry to probe dark matter and gravitational waves, and his tireless work assisting experimentalists in the search for supersymmetry. More unexpected than his contributions to these defining moments in the history of particle physics are perhaps his investigations into how to unveil nearby supernova explosions using the remnants they leave on… sea sludge.

John has also been a tireless ambassador for CERN’s founding values in bringing nations together for the peaceful pursuit of knowledge.

Many happy returns, John Ellis!

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