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Manchester scientists have played a key role in achieving the world青瓜视频檚 most precise measurement of a mysterious property of the muon, a subatomic particle that could help reveal new physics beyond our current understanding.

The breakthrough, , the U.S. Department of Energy青瓜视频檚 Fermi National Accelerator Laboratory, brings researchers one step closer to discovering forces or particles beyond the Standard Model of physics.

This result represents the most precise measurement ever made at a particle accelerator anywhere in the world, and could help unlock the secrets of the universe.

What is the Muon g-2 Experiment?

The Muon g-2 experiment investigates the subtle 青瓜视频渨obble青瓜视频� in the motion of muons, particles similar to electrons but with 200 times more mass, as they move through a magnetic field.

This wobble, known as the muon青瓜视频檚 青瓜视频榓nomalous magnetic moment青瓜视频�, or g-2, provides one of the most sensitive and precise tests of the Standard Model of particle physics, the theory that explains how fundamental particles and forces interact.

Landmark results

This announcement reveals the experiment青瓜视频檚 third and final measurement, which confirms earlier results, but with a much better precision of 127 parts-per-billion, surpassing the original experimental design goal of 140 parts-per-billion.

These results now stand as the world青瓜视频檚 most accurate measurement of the muon magnetic anomaly.

Representing more than a decade of work, this milestone is expected to stand as the definitive benchmark for testing the Standard Model for years to come.

Critical UK contribution

Scientists from the Universities of Manchester, Lancaster, Liverpool, and University College London were central to the experiment, which brought together 176 researchers from 34 institutions across seven countries.

The UK-built straw tracking detectors were essential in tracing the motion of the muon beam, a critical part of the analysis that enabled this unprecedented level of precision.

The University of Manchester was responsible for mapping the vertical oscillations in the beam motion using the detectors and in the theory prediction for the measured value.

Professor Mark Lancaster, Principle Investigator of the UK groups from The University of Manchester, said: 青瓜视频淭his is the most precise measurement ever made at a particle accelerator and the culmination of over a decade青瓜视频檚 work. The motion of the muon beam was exquisitely traced by the UK-built straw tracking detectors and was a key part of the analysis. That we now have a measurement to a precision of 0.1 parts per million and a theoretical prediction, to 0.5 parts per million, is a remarkable achievement from the work of hundreds of people.青瓜视频�

STFC青瓜视频檚 Professor Sinead Farrington, Director of Particle Physics, added: 青瓜视频淲hat青瓜视频檚 really fascinating about this result is the way it has illustrated the interplay between theoretical predictions and experimental results - each can lead the other, and make demands on the precision of the other.  

青瓜视频淭he UK has played critical roles of which we can be proud, both in leadership and in developing the straw tracking detectors, in this highly international collaboration.青瓜视频�

Read the at the Fermilab website.