Quantum Physics: standard model proven again (General)

by David Turell , Friday, February 24, 2023, 19:30 (636 days ago) @ David Turell

By measuring the electrons magnetic properties:

https://www.sciencenews.org/article/standard-model-particle-physics

"In a new experiment, scientists measured a magnetic property of the electron more carefully than ever before, making the most precise measurement of any property of an elementary particle, ever. Known as the electron magnetic moment, it’s a measure of the strength of the magnetic field carried by the particle.

"That property is predicted by the standard model of particle physics, the theory that describes particles and forces on a subatomic level. In fact, it’s the most precise prediction made by that theory.

"By comparing the new ultraprecise measurement and the prediction, scientists gave the theory one of its strictest tests yet. The new measurement agrees with the standard model’s prediction to about 1 part in a trillion, or 0.1 billionths of a percent, physicists report in the February 17 Physical Review Letters.

"When a theory makes a prediction at high precision, it’s like a physicist’s Bat Signal, calling out for researchers to test it. “It’s irresistible to some of us,” says physicist Gerald Gabrielse of Northwestern University in Evanston, Ill.

***

"The new result is more than twice as precise as the previous measurement, which stood for over 14 years, and which was also made by Gabrielse’s team. Now the researchers have finally outdone themselves. “When I saw the [paper] I said, ‘Wow, they did it,’” says Stefano Laporta, a theoretical physicist affiliated with University of Padua in Italy, who works on calculating the electron magnetic moment according to the standard model."

Comment: this attests to our ability to understand the deepest secrets of our reality.