Scientists have discovered an ultra-rare particle decay process, opening a new path to find physics beyond our understanding of how the building blocks of matter interact.
Scientists at CERN have discovered an ultra-rare particle decay process, opening a new path to find physics beyond our understanding of how the building blocks of matter interact.
Cristina Lazzeroni, Professor in Particle Physics at the University of Birmingham, commented:"With this measurement, K+ → π p+νν becomes the rarest decay established at discovery level -- the famous 5 sigma. This difficult analysis is the result of excellent teamwork, and I am extremely proud of this new result."
The new result is based on the combination of data taken by the NA62 experiment in 2021-22 and a previously published result based on the 2016-18 dataset.? The 2021-22 dataset was collected following a suite of upgrades to the NA62 setup, allowing operation at 30% higher beam intensity with several new and improved detectors.
Professor Goudzovski commented:"Attracting top talent and offering positions of responsibility to early-career researchers has always been the priority for the group. We are proud that both the current NA62 physics coordinator and the current convener of the K+ → π p+νν measurement are former Birmingham PhD students. It is a privilege to work in and lead such an energetic and constructive team.
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