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Reddit AMA -- Ask Me Anything about the final result of the Muon g-2 experiment: June 11, 2025, 12:00 PM - 1:00 PM (CDT)
For anyone interested in particle physics, this might be neat to attend.
Reddit AMA — Ask Me Anything about the final result of the Muon g-2 experiment
June 11, 2025
12:00 PM – 1:00 PM
Online
Speaker: Peter Winter, Muon g-2 Co-Spokesperson and Physicist, Argonne
Speaker: Simon Corrodi, Muon g-2 Co-analysis Coordinator and Physicist, Argonne
Speaker: Yuri Oksuzian, Muon g-2 Co-analysis Coordinator and Physicist, Argonne
Speaker: Sam Grant, Postdoctoral Appointee, Argonne
Speaker: Yongyi Wu, Postdoctoral Appointee, Argonne
Speaker: Lorenzo Cotrozzi, Postdoctoral Research Associate, University of Liverpool
Speaker: Matthew Bressler, Postdoctoral Researcher, University of Massachusetts Amherst
A Reddit AMA hosted by Argonne exploring the final result and impact of the Muon g-2 experiment.
Abstract: A collaborative team of researchers from multiple institutions, including Argonne National Laboratory, has been conducting groundbreaking work at Fermi National Accelerator Laboratory to investigate whether the magnetic behavior of the muon deviates from predictions made by the Standard Model — a foundational theory in particle physics. This research, known as the Muon g-2 experiment, released initial measurements of the muon’s magnetic moment in 2021 and 2023. Now, in 2025, the final result is available — potentially pointing to previously unknown particles or forces that could reshape our understanding of the universe.
To mark this milestone, we’re hosting a Reddit AMA (Ask Me Anything) — an interactive online Q&A session where the public can engage directly with some of the scientists behind the Muon g-2 experiment. This is a rare chance to connect with leading experts in high-energy and particle physics, ask your most curious questions, and learn more about the implications of this achievement.
Curious now? Visit the Reddit AMA page ahead of time to submit your questions ahead of the event.
https://www.anl.gov/event/reddit-ama-ask-me-anything-about-the-final-result-of-the-muon-g2-experiment
June 11, 2025
12:00 PM – 1:00 PM
Online
Speaker: Peter Winter, Muon g-2 Co-Spokesperson and Physicist, Argonne
Speaker: Simon Corrodi, Muon g-2 Co-analysis Coordinator and Physicist, Argonne
Speaker: Yuri Oksuzian, Muon g-2 Co-analysis Coordinator and Physicist, Argonne
Speaker: Sam Grant, Postdoctoral Appointee, Argonne
Speaker: Yongyi Wu, Postdoctoral Appointee, Argonne
Speaker: Lorenzo Cotrozzi, Postdoctoral Research Associate, University of Liverpool
Speaker: Matthew Bressler, Postdoctoral Researcher, University of Massachusetts Amherst
A Reddit AMA hosted by Argonne exploring the final result and impact of the Muon g-2 experiment.
Abstract: A collaborative team of researchers from multiple institutions, including Argonne National Laboratory, has been conducting groundbreaking work at Fermi National Accelerator Laboratory to investigate whether the magnetic behavior of the muon deviates from predictions made by the Standard Model — a foundational theory in particle physics. This research, known as the Muon g-2 experiment, released initial measurements of the muon’s magnetic moment in 2021 and 2023. Now, in 2025, the final result is available — potentially pointing to previously unknown particles or forces that could reshape our understanding of the universe.
To mark this milestone, we’re hosting a Reddit AMA (Ask Me Anything) — an interactive online Q&A session where the public can engage directly with some of the scientists behind the Muon g-2 experiment. This is a rare chance to connect with leading experts in high-energy and particle physics, ask your most curious questions, and learn more about the implications of this achievement.
Curious now? Visit the Reddit AMA page ahead of time to submit your questions ahead of the event.
https://www.anl.gov/event/reddit-ama-ask-me-anything-about-the-final-result-of-the-muon-g2-experiment
Here is some background material:
Muon g-2 announces most precise measurement of the magnetic anomaly of the muon
The third and final result, based on the last three years of data, is in perfect agreement with the experiment’s previous results
June 3, 2025
The Muon g-2 collaboration’s final measurement of the muon magnetic anomaly agrees with their previously published results, but with a much better precision of 127 parts-per-billion, surpassing the original experimental goal of 140 parts-per-billion.
Scientists working on the Muon g-2 experiment, hosted by the U.S. Department of Energy’s (DOE) Fermi National Accelerator Laboratory, have released their third and final measurement of the muon magnetic anomaly. This value is related to g-2, the experiment’s namesake measurement. The final result agrees with their published results from 2021 and 2023 but with a much better precision of 127 parts-per-billion, surpassing the original experimental design goal of 140 parts-per-billion.
“The anomalous magnetic moment, or g–2, of the muon is important because it provides a sensitive test of the Standard Model of particle physics. This is an exciting result, and it is great to see an experiment come to a definitive end with a precision measurement,” said Regina Rameika, the DOE’s associate director for the Office of High Energy Physics.
This long-awaited result is a tremendous achievement of precision and will remain the world’s most precise measurement of the muon magnetic anomaly for many years to come. Despite recent challenges with the theoretical predictions that reduce evidence of new physics from muon g-2, this result provides a stringent benchmark for proposed extensions of the Standard Model of particle physics.
...
https://www.anl.gov/article/muon-g2-announces-most-precise-measurement-of-the-magnetic-anomaly-of-the-muon
The third and final result, based on the last three years of data, is in perfect agreement with the experiment’s previous results
June 3, 2025
The Muon g-2 collaboration’s final measurement of the muon magnetic anomaly agrees with their previously published results, but with a much better precision of 127 parts-per-billion, surpassing the original experimental goal of 140 parts-per-billion.
Scientists working on the Muon g-2 experiment, hosted by the U.S. Department of Energy’s (DOE) Fermi National Accelerator Laboratory, have released their third and final measurement of the muon magnetic anomaly. This value is related to g-2, the experiment’s namesake measurement. The final result agrees with their published results from 2021 and 2023 but with a much better precision of 127 parts-per-billion, surpassing the original experimental design goal of 140 parts-per-billion.
“The anomalous magnetic moment, or g–2, of the muon is important because it provides a sensitive test of the Standard Model of particle physics. This is an exciting result, and it is great to see an experiment come to a definitive end with a precision measurement,” said Regina Rameika, the DOE’s associate director for the Office of High Energy Physics.
This long-awaited result is a tremendous achievement of precision and will remain the world’s most precise measurement of the muon magnetic anomaly for many years to come. Despite recent challenges with the theoretical predictions that reduce evidence of new physics from muon g-2, this result provides a stringent benchmark for proposed extensions of the Standard Model of particle physics.
...
https://www.anl.gov/article/muon-g2-announces-most-precise-measurement-of-the-magnetic-anomaly-of-the-muon
Here is a discussion of the result:
Here is the PDF of their preprint at arXiv:
Measurement of the Positive Muon Anomalous Magnetic Moment to 127 ppb
...
(Dated: 6th June, 2025)
A new measurement of the magnetic anomaly a(mu) of the positive muon is presented based on data taken from 2020 to 2023 by the Muon g-2 Experiment at Fermi National Accelerator Laboratory (FNAL). This dataset contains over 2.5 times the total statistics of our previous results. From the ratio of the precession frequencies for muons and protons in our storage ring magnetic field, together with precisely known ratios of fundamental constants, we determine a(mu) = 116 592 0710(162) × 10-12 (139 ppb) for the new datasets, and a(mu) = 116 592 0705(148) × 10-12 (127 ppb) when combined with our previous results. The new experimental world average, dominated by the measurements at FNAL, is a(mu) (exp) = 116 592 0715(145) × 10-12 (124 ppb). The measurements at FNAL have improved the precision on the world average by over a factor of four.
...
https://arxiv.org/pdf/2506.03069
...
(Dated: 6th June, 2025)
A new measurement of the magnetic anomaly a(mu) of the positive muon is presented based on data taken from 2020 to 2023 by the Muon g-2 Experiment at Fermi National Accelerator Laboratory (FNAL). This dataset contains over 2.5 times the total statistics of our previous results. From the ratio of the precession frequencies for muons and protons in our storage ring magnetic field, together with precisely known ratios of fundamental constants, we determine a(mu) = 116 592 0710(162) × 10-12 (139 ppb) for the new datasets, and a(mu) = 116 592 0705(148) × 10-12 (127 ppb) when combined with our previous results. The new experimental world average, dominated by the measurements at FNAL, is a(mu) (exp) = 116 592 0715(145) × 10-12 (124 ppb). The measurements at FNAL have improved the precision on the world average by over a factor of four.
...
https://arxiv.org/pdf/2506.03069
Lastly, here is a review paper on this topic:
Muon g - 2: A review
Abstract
The muon magnetic anomaly, a(mu)= (g(mu) - 2)/2, plays a special role in the history of the Standard Model (SM). Precise calculations and measurements of this fundamental quantity provide a stringent test of the SM and a window to the physics beyond. In light of the first result published by the Fermilab g-2 Muon experiment, this article reviews the current status of the experimental measurement and theoretical prediction of the muon anomalous magnetic moment. It also provides an overview on resulting constraints of associated physics beyond the SM (BSM), future muon g-2 experiments and on the progress of experiments that are closely connected to the physics of the muon g-2, such as measurements that could provide complementary information about BSM physics in the muon sector.
...
https://www.sciencedirect.com/science/article/pii/S0550321322000268?ref=pdf_download&fr=RR-2&rr=94d6f712598fdd94
Abstract
The muon magnetic anomaly, a(mu)= (g(mu) - 2)/2, plays a special role in the history of the Standard Model (SM). Precise calculations and measurements of this fundamental quantity provide a stringent test of the SM and a window to the physics beyond. In light of the first result published by the Fermilab g-2 Muon experiment, this article reviews the current status of the experimental measurement and theoretical prediction of the muon anomalous magnetic moment. It also provides an overview on resulting constraints of associated physics beyond the SM (BSM), future muon g-2 experiments and on the progress of experiments that are closely connected to the physics of the muon g-2, such as measurements that could provide complementary information about BSM physics in the muon sector.
...
https://www.sciencedirect.com/science/article/pii/S0550321322000268?ref=pdf_download&fr=RR-2&rr=94d6f712598fdd94
That should be sufficient to get a feel for that which the experiment concerns. For more general issues in particle physics, here is an open access book at World Scientific that might provide answers to some extent:
Advanced Series on Directions in High Energy Physics: Volume 26
The Standard Theory of Particle Physics
Essays to Celebrate CERN's 60th Anniversary
Edited by: Luciano Maiani (INFN, Italy & University of Rome, Italy) and Luigi Rolandi (CERN, Switzerland & Scuola Normale Superiore di Pisa, Italy)
https://doi.org/10.1142/9878
https://www.worldscientific.com/worldscibooks/10.1142/9878#t=aboutBook
The Standard Theory of Particle Physics
Essays to Celebrate CERN's 60th Anniversary
Edited by: Luciano Maiani (INFN, Italy & University of Rome, Italy) and Luigi Rolandi (CERN, Switzerland & Scuola Normale Superiore di Pisa, Italy)
https://doi.org/10.1142/9878
https://www.worldscientific.com/worldscibooks/10.1142/9878#t=aboutBook
Enjoy!