Muon g-2 Phasor Clock: Anomalous Precession in 2D

This is a 2D phasor-diagram reading of the same storage-ring physics as the 3D version: instead of a ring viewed in space, two rotating arrows share one polar clock face — momentum turning at the cyclotron frequency ω_c = qB/(γm), spin turning at ω_s = ω_c + ω_a. Drag the clock face to set their initial phase offset φ0, then watch the spin phasor slip ahead of momentum at the rate set by the anomaly a = (g−2)/2. Underneath, a scrolling histogram reproduces the actual observable of a real g-2 experiment: the decay-positron count N(t) = N0·e^−t/τ·(1 + A·cos(ω_at + φ0)), an exponentially falling population modulated by the same anomalous frequency, fit by Fermilab and CERN to fix g-2 to ten decimal places.