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A recent Nature publication has determined the strong coupling constant αs to five parts per mille using only low-energy lattice QCD input, addressing a key theoretical bottleneck for HL-LHC and future Higgs factory precision predictions.
John Baez and collaborators present a new paper that uses exceptional algebraic structures, including E7 and Jordan algebras, to provide a mathematical explanation for the three generations of quarks and leptons in the Standard Model.
Physicists at the BES III experiment have found convincing new evidence for glueballs, exotic particles made entirely of gluons, supporting predictions of the Standard Model of particle physics.
The article explores the complexity of counting elementary particles in the Standard Model, noting that the number can vary from 17 to many more depending on definitions and theoretical nuances.