Speaker
Description
The muon magnetic anomaly, $a_\mu=(g-2)/2$, is one of the most precise tests of the Standard Model and a sensitive probe for new physics.
In 2025, the Muon g−2 Experiment at Fermilab has measured a_mu with an astonishing precision of 0.127 ppm, which show a persistent tension with the theoretical predictions. In this scenario, the Muon g$-$2/EDM Experiment at J-PARC will provide an independent determination of $a_\mu$ using a novel approach based on a low-emittance muon beam stored in a compact magnetic ring. The experiment employs innovative technologies, including three-dimensional spiral injection, an MRI-type magnet with excellent field uniformity, and a positron tracking detector. The initial goal is a precision of 450 ppb on $a_\mu$ after two years of data taking, together with a sensitivity of $1.5\times10^{-21}$ e$\cdot$cm for the muon EDM. The experiment is currently in an advanced construction phase, and first beam tests have successfully demonstrated the feasibility of the new injection method. In this contribution, I will present the current status of the experiment, ongoing tests and optimizations, and plans for future improvements in experimental precision.
| Are you an early career researcher? | Yes, a Postdoc |
|---|