How to Tell Matter From Antimatter | CP Violation & The Ozma Problem

From Minute Physics.

This video was made with the support of the Heising Simons Foundation.

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This video is about the Ozma problem of distinguishing the chirality (ie left-handedness or right-handedness) of matter using weak interaction processes like beta decay (for example in uranium), or neutral kaon/k-meson decay. This is wrapped up in the phenomenon of CP violation, by which charge and parity are both violated by certain weak interaction processes – this enables antimatter to be unambiguously distinguished from matter, and left handed chirality from right handed.


The Ozma Search for Extraterrestrial Intelligence (SETI) Project

Sean Carroll on CP Symmetry (& why we shouldn’t trot out baryogenesis all the time)

Electroweak CP Violation on Scholarpedia

The Wu Experiment

Martin Gardner, The New Ambidextrous Universe

Lecture notes on CP Violation and the CKM Matrix, Cambridge (Mark Thomson)


L-glucose (vs D-glucose)

Radioactive Nucleus Decay

CP Violation in Semi-Leptonic Decays (SEE PAGE 426 for reference to definition of MATTER)

Kaon Decay Modes

Flipped bowling Jesus scene in Big Lebowski

Isotopes of Uranium

Beta Decay

The Wu Experiment


CP Violation in Symmetry Magazine

Physics Stack Exchange on CP Violation

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Created by Henry Reich