Enter Fermilab, the place a brand new campus dedicated to learning muons was being constructed.
“That opened up a world of chance,” Dr. Polly recalled in his biographical article. By this time, Dr. Polly was working at Fermilab; he and his colleagues may redo the g-2 experiment there, with extra precision. He turned the undertaking supervisor for the experiment.
To conduct the experiment, nonetheless, they wanted the 50-foot magnet racetrack from Brookhaven. And so in 2013, the magnet went on a 3,200-mile odyssey, largely by barge, down the Japanese Seaboard, round Florida and up the Mississippi River, then by truck throughout Illinois to Batavia, residence of Fermilab.
The magnet resembled a flying saucer, and it drew consideration because it was pushed south throughout Lengthy Island at 10 miles per hour. “I walked alongside and talked to individuals concerning the science we have been doing,” Dr. Polly wrote. “Transferring it via the Chicago suburbs to Fermilab provided one other probability for outreach. It stayed over one evening in a Costco parking zone. Nicely over a thousand individuals got here out to see it and listen to concerning the science.”
The experiment began up in 2018 with a extra intense muon beam and the aim of compiling 20 instances as a lot knowledge because the Brookhaven model.
In the meantime, in 2020, a gaggle of 170 specialists often known as the Muon g-2 Idea Initiative printed a new consensus value of the theoretical value of muon’s magnetic moment, primarily based on three years of workshops and calculations utilizing the Normal Mannequin. That reply bolstered the unique discrepancy reported by Brookhaven.
Reached by telephone on Monday, Aida X. El-Khadra, a physicist on the College of Illinois and a co-chair of the Muon g-2 Idea Initiative, stated that they had been ready for this consequence for a very long time.
“I’ve not had the sensation of sitting on sizzling coals earlier than,” she stated.
On the day of the Fermilab announcement one other group, utilizing a special approach often known as a lattice calculation to compute the muon’s magnetic second, acquired a special reply than Dr. El-Khadra’s group.