FlipFlopX t1_j9686l5 wrote on February 19, 2023 at 3:54 PM

Reply to comment by SaishDawg in Physicists nail down the most precise value yet of the electron magnetic moment. A newly measured value of an electron’s magnetic moment — a property of its spin and charge — is twice as precise as the one physicists have used for the past 14 years. by MistWeaver80

Neither. The g-2 measurement is done with a muon, not an electron. Since any anomalies scale with mass squared, and the muon is 200 times heavier than an electron, that experiment is 40000 times more sensitive to new physics than this one. Doubling the electron measurement accuracy reveals nothing new.

SaishDawg t1_j96g55h wrote on February 19, 2023 at 4:50 PM

Thanks for the succinct and illuminating explanation!