Physics

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

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

Support MinutePhysics on Patreon! http://www.patreon.com/minutephysics
Link to Patreon Supporters: http://www.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
https://www.seti.org/seti-institute/project/details/early-seti-project-ozma-arecibo-message

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

Marketing CP Violation

Electroweak CP Violation on Scholarpedia
http://www.scholarpedia.org/article/CPviolationinelectroweakinteractions

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

Martin Gardner, The New Ambidextrous Universe
https://books.google.com/books?id=kdLGa8cPPUC&lpg=PP1&pg=PR2#v=onepage&q&f=false

Lecture notes on CP Violation and the CKM Matrix, Cambridge (Mark Thomson)
https://www.hep.phy.cam.ac.uk/thomson/lectures/partIIIparticles/Handout122009.pdf

Homochirality
https://en.wikipedia.org/wiki/Homochirality

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

Radioactive Nucleus Decay
http://www.radioactivity.eu.com/site/pages/RadioactiveSeries.htm

CP Violation in Semi-Leptonic Decays (SEE PAGE 426 for reference to definition of MATTER)
https://www.hep.phy.cam.ac.uk/thomson/lectures/partIIIparticles/Handout122009.pdf

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

Flipped bowling Jesus scene in Big Lebowski

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

Beta Decay
https://en.wikipedia.org/wiki/Betadecay

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

Kaons
https://en.wikipedia.org/wiki/Kaon

CP Violation in Symmetry Magazine
https://www.symmetrymagazine.org/article/charge-parity-violation

Physics Stack Exchange on CP Violation
https://physics.stackexchange.com/questions/160511/what-cp-violating-processes-do-we-know-of

MinutePhysics is on twitter – @minutephysics
And facebook – http://facebook.com/minutephysics
And Google+ (does anyone use this any more?) – http://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

Products You May Like

Articles You May Like

Sine and cosine
Why do YouTubers clap at the start of videos?
Where do atoms come from? Billions of years of cosmic fireworks. | Michelle Thaller | Big Think
Why does sudden exposure to the sun cause sneezing? – Big Questions – (Ep. 216)
Best PHOTOBOMBS: IMG! episode 12

Leave a Reply

Your email address will not be published.