Entangled particles revive a 35-year-old test of the Standard Model
Physicists at the BESIII Collaboration have utilized quantum entanglement to conduct a new test of the Standard Model's CKM matrix. The experiment provides an independent measurement of quark flavor switching probabilities, helping to resolve long-standing discrepancies in particle physics.
Why it matters
Validating the Standard Model is crucial for understanding the fundamental forces of the universe, and this new technique offers a way to address persistent anomalies in particle behavior.
edited by Sadie Harley , reviewed by Robert Egan
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Add as preferred source A lambda hyperon decays into a proton, electron, and an invisible antineutrino, providing the information needed for physicists to examine the CKM matrix. Credit: The BESIII Collaboration Physicists at the BESIII Collaboration have breathed new life into a decades-old test of one of the Standard Model's most important ideas, using a technique that had gone almost untouched by experimenters for 35 years.
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