At the same time, according to the three-year seminar and calculations using the standard model, by 2020, a group of 170 experts called the Muon g-2 theoretical initiative has published a new consensus value on the theoretical value of μon magnetic moment. This answer reinforces the original difference in Brookhaven’s report.
Aida X. El-Khardra, a physicist at the University of Illinois and co-chair of the Muon g-2 Theoretical Initiative, contacted her by phone on Monday. She said she did not know about Fermi The laboratory will announce the reason for this result in two days-and she doesn’t want to do so, so as not to be deceived in a speech scheduled before the official opening on Wednesday.
On the day Fermilab announced, another group used another technique called lattice calculations to calculate the magnetic moment of muons and concluded that there was no difference between Brookhaven’s measurements and the standard model.
“Yes, we claim that there is no difference between the Standard Model and Brookhaven’s results, and there are no new physics principles,” said Zoltan Fodor of Pennsylvania State University, who was on Wednesday in the “Nature One of the authors of the report published in the magazine.
Dr. El-Khadra, who is familiar with this work, called it “a stunning calculation, but not conclusive.” She pointed out that the calculations involved are extremely complex, all possible ways of interaction between mesons and the universe must be considered, and thousands of individual sub-calculations and hundreds of hours of supercomputer time are required.
She said that these lattice calculations need to be checked against the independent results of other groups to eliminate the possibility of system errors. Currently, Theory Initiative calculations are still the standard for comparing measurement results.