A beam of muons with aligned spins is directed into a storage ring that has a very precisely known magnetic field. As the beam goes around this storage ring, the muons' spins wobble, or precess. Scientists measure the rate that they precess very precisely.
Why the Muon g-2 results are so exciting?
This result is so exciting because it deviates so clearly from the Standard Model prediction of the muon's g-factor; there has to be some new particle or interaction that affects muons."
What is G for a muon?
The accepted theoretical values for the muon are: g-factor: 2.00233183620(86) anomalous magnetic moment: 0.00116591810(43)
What does Fermilab do?
Fermilab is America's particle physics and accelerator laboratory. Our vision is to solve the mysteries of matter, energy, space and time for the benefit of all. We strive to: lead the world in neutrino science with particle accelerators.
Why is g2 important?
Scientists can test the presence and nature of these virtual particles with particle beams traveling in a magnetic field. The Muon g-2 experimenters examine the precession of muons that are subjected to a magnetic field.
Why is supersymmetry needed?
Supersymmetry is an extension of the Standard Model that aims to fill some of the gaps. It predicts a partner particle for each particle in the Standard Model. These new particles would solve a major problem with the Standard Model – fixing the mass of the Higgs boson.
What is the lifetime of a muon?
= 2.197 µs The muon has a lifetime of τµ = 2.197 µs.
How Do You Measure G-2?
How do we measure g-2? A beam of muons with aligned spins is directed into a storage ring that has a very precisely known magnetic field. As the beam goes around this storage ring, the muons' spins wobble, or precess. Scientists measure the rate that they precess very precisely.
Is Fermilab shut down?
It was shut down in 2011. Since then Fermilab's Main Injector, two miles (3.3 km) in circumference, has been the laboratory's most powerful particle accelerator. The construction of the first building for the new PIP-II linear accelerator began in 2020….Fermilab.
| Website | www.fnal.gov |
| Map | |
|---|---|
| Location in Illinois |
Does Fermilab still have a particle accelerator?
As America's particle physics laboratory, Fermilab operates and builds powerful particle accelerators for investigating the smallest things human beings have ever observed. About 2,300 physicists from all over the world come to Fermilab to conduct experiments using particle accelerators.