The muon anomalous magnetic moment aμ=(gμ-2)/2 is a fundamental property of the muon particle, which plays a foundation role in the formation of the Standard Model. The first results of the Fermilab Muon g-2 experiment show that the experimental measurement of aμ deviates with the theoretical prediction by 3.3 standard deviation, as in agreement with the previous measurements from the BNL experiment. The combined result of the two experiments is 4.2 standard deviation away from the Standard Model prediction, which provides a strong evidence for new physics, indicating the existence of possible unknown particles or new forces.
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