HDTutorial
EN

Playback starts YouTube’s embedded player (privacy-enhanced mode).

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

1,433,777 views February 29, 2020 5:02

Watch on YouTube
Channelminutephysics

Description from the creator

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

Support MinutePhysics on Patreon! patreon.com/minutephysics
Link to Patreon Supporters: minutephysics.com/supporters/

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.

REFERENCES

The Ozma Search for Extraterrestrial Intelligence (SETI) Project
seti.org/seti-institute/project/details/early-s…

Sean Carroll on CP Symmetry (& why we shouldn’t trot out baryogenesis all the time)
preposterousuniverse.com/blog/2010/06/04/market…

Electroweak CP Violation on Scholarpedia
scholarpedia.org/article/CPviolationinelectrowe…

The Wu Experiment
en.wikipedia.org/wiki/Wuexperiment

Martin Gardner, The New Ambidextrous Universe
books.google.com/books?id=kdLGa8cPPUC&lpg=P…

Lecture notes on CP Violation and the CKM Matrix, Cambridge (Mark Thomson)
hep.phy.cam.ac.uk/thomson/lectures/partIIIparti…

Homochirality
en.wikipedia.org/wiki/Homochirality

L-glucose (vs D-glucose)
en.wikipedia.org/wiki/L-Glucose

Radioactive Nucleus Decay
radioactivity.eu.com/site/pages/RadioactiveSeri…

CP Violation in Semi-Leptonic Decays (SEE PAGE 426 for reference to definition of MATTER)
hep.phy.cam.ac.uk/thomson/lectures/partIIIparti…

Kaon Decay Modes
pdg.lbl.gov/2012/listings/rpp2012-list-K-zero-L…

Flipped bowling Jesus scene in Big Lebowski
youtube.com/watch?v=lWz8NGIisMo

Isotopes of Uranium
en.wikipedia.org/wiki/Isotopesofuranium

Beta Decay
en.wikipedia.org/wiki/Betadecay

The Wu Experiment
en.wikipedia.org/wiki/Wuexperiment

Kaons
en.wikipedia.org/wiki/Kaon

CP Violation in Symmetry Magazine
symmetrymagazine.org/article/charge-parity-viol…

Physics Stack Exchange on CP Violation
physics.stackexchange.com/questions/160511/what…

MinutePhysics is on twitter - @minutephysics
And facebook - facebook.com/minutephysics
And Google+ (does anyone use this any more?) - bit.ly/qzEwc6

Minute Physics provides an energetic and entertaining view of old and new problems in physics -- all in a minute!

Created by Henry Reich

About this tutorial

minutephysics published this 5:02 video tutorial on February 29, 2020. It has been watched 1,433,777 times on YouTube.

Duration
5:02
Published
February 29, 2020
Views
1,433,777
Likes
52,057

Tags

Share

This tutorial in other languages