Coloquio CAPA: “The Magnetic Moment of the Muon Puzzle: New Physics or the Best Proof of Quantum Field Theory”.- Jueves 12 de febrero
El jueves 12 de febrero de 2026 a las 12:10 h se celebrará un nuevo coloquio del CAPA (Centro de Astropartículas y Física de Altas Energías). Zoltan Fodor (Distinguished Professor of Physics Eberly College of Science. Pennsylvania State University) impartirá la conferencia de título “The Magnetic Moment of the Muon Puzzle: New Physics or the Best Proof of Quantum Field Theory”. Tendrá lugar en el Seminario de Física Teórica, ubicado en la primera planta del Edificio A (Físicas).
Resumen (en inglés):
In the last two decades or so there have been stronger and stronger disagreements between direct measurements of the anomalous magnetic moment of the muon and the standard-model prediction. Such a large discrepancy would be a signal for an interaction or particle not present in the standard model. However, already in 2020 a lattice QCD calculation suggested a "no-tension" scenario. I report on our new lattice QCD calculation, which reduced the uncertainty ofour 2020 result by about 40%. The agreement between the measured value of the anomalousmagnetic moment of the muon and its theoretical predictions is an extremely impressive prove of the validity of quantum field theory -with three very different calculational frameworks for QED, EW and QCD- up to 11 digits.
