AI Summary

Physicists from the LHCb Collaboration presented experimental evidence of an extremely rare particle decay at a seminar on November 3, marking the first direct glimpse into the hypothesized “zeptoverse” that could contain undiscovered particles and forces at zeptometer scales. The finding, detailed in a non‑peer‑reviewed preprint posted to arXiv, follows more than four decades of searches for such elusive decays. Researchers say the result brings them closer to probing the fundamental processes that shaped the early universe, dark matter and the existence of ordinary matter.

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