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 might redo the g-2 experiment there, with extra precision. He grew to become the venture 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, principally 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 had been doing,” Dr. Polly wrote. “Shifting it by the Chicago suburbs to Fermilab provided one other likelihood for outreach. It stayed over one night time 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 purpose of compiling 20 occasions as a lot information because the Brookhaven model.
In the meantime, in 2020, a bunch of 170 consultants often known as the Muon g-2 Principle Initiative printed a new consensus value of the theoretical value of muon’s magnetic moment, based mostly on three years of workshops and calculations utilizing the Commonplace 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 Principle Initiative, stated that they had been ready for this outcome for a very long time.
“I’ve not had the sensation of sitting on scorching coals earlier than,” she stated.
On the day of the Fermilab announcement one other group, utilizing a special method often known as a lattice calculation to compute the muon’s magnetic second, obtained a special reply than Dr. El-Khadra’s group.