At Fermilab, a brand new campus dedicated to finding out 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 urged the lab to redo the g-2 experiment there. They put him in cost.
To conduct the experiment, nevertheless, 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 Jap Seaboard, round Florida and up the Mississippi River, then by truck throughout Illinois to Batavia, house 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 in regards to the science we have been doing,” Dr. Polly wrote. “It stayed over one night time in a Costco parking zone. Properly over a thousand individuals got here out to see it and listen to in regards to the science.”
The experiment began up in 2018 with a extra intense muon beam and the objective of compiling 20 occasions as a lot information because the Brookhaven model.
In the meantime, in 2020, a bunch of 170 consultants often called the Muon g-2 Idea Initiative printed a brand new consensus worth of the theoretical worth of the muon’s magnetic second, based mostly on three years of workshops and calculations utilizing the Customary Mannequin. That reply strengthened the unique discrepancy reported by Brookhaven.
Reached by cellphone on Monday two days earlier than the announcement, Aida X. El-Khadra, a physicist on the College of Illinois and a co-chair of the Muon g-2 Idea Initiative, stated they’d 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 distinct method often called a lattice calculation to compute the muon’s magnetic second, received a distinct reply than Dr. El-Khadra’s group, including a brand new notice of uncertainty to the proceedings.