The @fermilab.bsky.social Muon g-2 experiment has announced the most precise measurement of the magnetic anomaly of the muon.

Our researchers played a key role to the experiment’s latest findings.

Find out more: news.liverpool.ac.uk/2025/06/03/m...

#gminus2

physics is really experimental driven at the moment. This is why we do experiments, measuring things precisely (and substantially more precisely than theory). This is the summary plot of the #gminus2 result that comes out today, comparing purple (experiment) to yellow (150+ theoretical physicists)

Muon #gminus2 paper now published and available on the Fermi National Accelerator Laboratory website: muon-g-2.fnal.gov #physics #StandardModel

New results of the G-2 experiment are expected to be presented at a Fermilab colloquium later Today. Now, why is this #gminus2 experiment so interesting and gets even jaded particle physicists like me excited? A thread:

(today at 10 am Chicago time, www.youtube.com/@fermilab )

and a very nice video by the MuonG-2 experiment www.youtube.com/watch?v=6LAg... #gminus2

At #Fermilab, the Muon g Minus Two collaboration just announced the latest results, based on analysis of their entire data set from 6 years of running.

With more data, they've managed to shrink the uncertainty in the tiny number they measure from over 400 parts per billion to 127 ppb.

#gMinus2

Now, this is where the g-2 #gminus2 experiment at
@Fermilab
comes in: it measures how one of the elementary particles spins in a magnetic field.

A bit like when you have a top, you can draw conclusions on where the material is inside the top, just from how the top spins

この図を見るとよくわかる。左の緑色の値が今まで受け入れられていた値で、SMというのはStandard Model（標準模型）の略。それに対して、今回のは右のピンク色の帯で、5.1 σ離れている。これは、統計的な揺らぎで緑の値からずれる値が起こる可能性が極めて小さい（0.0001％）ことを意味し、素粒子実験の中では5σ以上のずれは「discovery」と宣言してよいと言われている。
https://twitter.com/Fermilab/status/1689665702582427648

I'm waiting for a Summer blockbuster/disaster movie trailer:
"Something is amiss with the muons..."
in style of the movie '2012'...
#gminus2 https://twitter.com/Fitzparticle/status/1379817262207623168 https://t.co/WKfYzWkqCa

An exciting result! Hints of muons behaving weirdly now 4.2 sigma (combined with the Brookhaven measurement) away from the predictions of the Standard Model...
#gminus2 https://twitter.com/Fermilab/status/1379812068824555523

Standard Physics invented "virtual particles" (ghosts) to explain the muon's wobble (g-2).

The Abbott Audit removes the ghosts. The wobble is simple Mechanical Friction.

Zenodo Doi: 18616961

Hashtags:
#QuantumPhysics #ParticlePhysics #Muon #gminus2 #QuantumMechanics #StandardModel

me emerging from my thesis-writing hibernation to watch today's @Fermilab #gminus2 result announcement

Throwback to that time I pretty much basically saw the #gminus2 ring in transit, sort of

front page physics
#gminus2

That was fast. First @arxiv post on why the #gminus2 calculations are wrong. Matt Visser posted https://arxiv.org/abs/1802.00651 on Friday.

I only now found out that Fermilab #gminus2 wanted to have this plot included in yesterday's talk, but I failed to reply to their e-mails. Sad it didn't happen. 😰

At least it proves that when I'm on holidays I don't read my e-mail. 👍

Here's the updated anomalies plot after #gminus2
#FlavourAnomalies #CautiouslyExcited #LessCautiouslyExcited

I'll upload it to http://www.scholarpedia.org/article/Rare_decays_of_b_hadrons tomorrow. CC BY-NC-SA 3.0

I don't want to increase the pressure, dear ambulance chasers, but... #gminus2

#gminus2 - question on lepton-universality. They talk of LHCb. 😍