Is Twenty Years-Old Puzzle of The Muon Anomaly Finally Solved by Light-Quark Connected Component?

The g-2 magnetic moment of the muon can be predicted from Standard model. But these calculations require further input that needs to come from other experiments. The authors of the new paper have re-calculated all these contributions to the muon g-2 and they say there is one in particular that doesn’t fit with the data, and that’s the process in which a pair of pions are involved. The pions are themselves pairs of quarks and the data for their properties comes from other measurements and that seems to bring in an error.

IMO we are witnessing the occupation-driven epicycle character of mainstream physics once again. A much of "New Physics" is related to hyperdimensional "dark matter-like" effects (Cassimir force, Yukawa force) which manifests itself the more, the higher density of matter gets (as is the case of muons). The problem is, these effects aren't generally attributed to extradimensions, but to another anomalies, which were independently described before. The things is, physicists need to find new physics for not to lose their jobs but at the same moment they need to adhere on existing models for being able to publish them with present math (for not to lose their jobs). The result is, instead of looking for a new paradigms, the existing theories are extended with various terms and contributions like ancient epicycle model of solar system without actually switching the paradigm from intrinsic perspective to extrinsic one. See also:

Physicists Finally Nail the Proton’s Size, and Hope Dies : New Discovery May Explain the Confounding Asymmetry in the Proton