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In 2021 an experiment at the Fermi National Accelerator Laboratory (FNAL) near Chicago confirmed a puzzling discrepancy regarding an elementary particle, called muon. The event received significant media attention. On the same day, our ab-initio calculation was published in Nature, challenging previous computations and bringing the theoretical prediction closer to the experimental value: no new forces or particles may be needed to explain the FNAL measurement. Ours is the most precise ab-initio calculation so far, with uncertainties comparable to those of the measurement and of the reference, data-driven computations. These computations were carried out -among other resources- using previous allocations on HAWK.

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Lattice QCD with High Precision

  • 章节

  • 发表日期：

    2026年

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  • Zoltan Fodor,
  • Fabian Frech,
  • Christian Hoelbling,
  • Balint Toth

摘要

In 2021 an experiment at the Fermi National Accelerator Laboratory (FNAL) near Chicago confirmed a puzzling discrepancy regarding an elementary particle, called muon. The event received significant media attention. On the same day, our ab-initio calculation was published in Nature, challenging previous computations and bringing the theoretical prediction closer to the experimental value: no new forces or particles may be needed to explain the FNAL measurement. Ours is the most precise ab-initio calculation so far, with uncertainties comparable to those of the measurement and of the reference, data-driven computations. These computations were carried out -among other resources- using previous allocations on HAWK.