LHC's D-meson study wraps up antimatter 'flip' story
Researchers at the Large Hadron Collider have witnessed D mesons flip from matter into antimatter and back.
In 2023, the ALICE experiment was ready for their best year yet, until a mysterious signal threatened everything. As the LHC wraps up its 2025 lead-ion run, physicists recall how they worked together to solve the puzzle.