但這項基於晶格量子色動力學模擬的新理論方法，卻與過去從電子和正子碰撞實驗中推導出的數據驅動方法產生了衝突。這種差異讓謎團從渺子本身的擺動，轉移到為何舊有的數據驅動預測會與新計算結果截然不同。
為了釐清真相，物理學家正深入檢視電子和正子碰撞的實驗數據，例如西伯利亞的VEPP-2000對撞機近期發現粒子產生率出現了驚人的變化。研究人員必須確認這些矛盾的測量結果究竟是來自實驗誤差，還是新物理現象的徵兆，才能真正解開這個謎題。
For twenty-five years, physicists were puzzled by a discrepancy between theoretical predictions and experimental measurements of the muon's magnetic wobble, which was seen as evidence of unknown particles. However, in 2021, a new theoretical calculation matched the experimental data precisely, appearing to solve the long-standing mystery.
But this new theoretical approach, based on lattice quantum chromodynamics simulations, conflicts with an older data-driven method derived from electron and positron collision experiments. This discrepancy shifted the mystery from the muon's wobble itself to why the older data-driven predictions differ so significantly from the newer calculations.
To resolve this, physicists are scrutinizing electron and positron collision data, such as results from the VEPP-2000 collider in Siberia, which recently reported a surprising shift in particle production rates. Researchers must determine if these conflicting measurements stem from experimental errors or are signs of new physics before the puzzle can be fully put to rest.