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

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Shared February 26, 2020

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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.

REFERENCES

The Ozma Search for Extraterrestrial Intelligence (SETI) Project
https://www.seti.org/seti-institute/p...

Sean Carroll on CP Symmetry (& why we shouldn’t trot out baryogenesis all the time)
https://www.preposterousuniverse.com/...

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

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

Martin Gardner, The New Ambidextrous Universe
https://books.google.com/books?id=kdL...

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

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

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

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

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

Kaon Decay Modes
http://pdg.lbl.gov/2012/listings/rpp2...

Flipped bowling Jesus scene in Big Lebowski
https://www.youtube.com/watch?v=lWz8N...

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

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

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

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

CP Violation in Symmetry Magazine
https://www.symmetrymagazine.org/arti...

Physics Stack Exchange on CP Violation
https://physics.stackexchange.com/que...

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delqyrus

I guess this is how we should teach our children what is left and what is right. "Simply build an particle accelerator".

1 month ago | [YT] | 3,220

Simon T

Humans: Turn left
Anti-Alien: Turns left
Humans: no no no... the other left.

1 month ago (edited) | [YT] | 1,236

Jusnoor Dhillon

"simply, build a particle accelerator."

1 month ago | [YT] | 454

Adam Mercer

We're having a hard time finding evidence of alien life in general and MinutePhysics over here is discussing the ramifications of addressing left/right to anti-aliens.

1 month ago | [YT] | 1,444

Joshua Tahanlangit

Me: "turn to the left"
Alien: turns right
Me: Jimmy we've discussed this already. Do we have to visit a particle accelerator again?

1 month ago (edited) | [YT] | 352

Koen Bresters

minutephysics: "simply build a particle accelerator"
me: ?!

1 month ago | [YT] | 1,503

Magnus Mørkøre Johannesen

God might play dice, but he's really particular about his chirality, it seems.

1 month ago | [YT] | 1,042

matt winward

"Everything mirrors perfectly except for this one thing"

...

...

....why....?

1 month ago | [YT] | 968

Caesar cch

7 year old me: Mom how to distinguish left from right?
Mom who also happens to be a physicist: Just build a particle accelerator...

4 weeks ago (edited) | [YT] | 278

Snyde

"Enter the K-on."

And thus, moe was scientifically proven.

1 month ago | [YT] | 932

dataValis OFFICIAL

"So you guys just have to look at the 20.1% decay"
"Oh.. got it! 1.02% thanks!"

1 month ago | [YT] | 131

Sunny

3:57
"simply build a particle accelerator"
what a flex

1 month ago | [YT] | 105

AeroQC

Scientist A: "Do you know what's the difference between Matter and Anti-matter?"
Scientist B: *shrugs *
Scientist A: "Neither do I, but it doesn't matter."

1 month ago (edited) | [YT] | 259

Chr1z2

* Alien visits earth *
Alien: "Du you know the way to the White House?"
Human: "Well, do you know kaons...?"

4 weeks ago | [YT] | 171

Fiyaaah

"Simply build a particle accelerator" Can I get one at Ikea? And how many part(ticle)s does it consist of? Must be one hell of manual.

1 month ago | [YT] | 94

Py'Werne

What i came here for: The Ozma Problem

What i understood: 🅰🅽🆃🅸 - 🅰🅻🅸🅴🅽🆂

1 month ago | [YT] | 230

KuruGDI

1:01 I wish the text would stay longer in the window. I don't mind hit pause while watching the video, but it would be nice to have a longer timespan to actually be able to hit pause.

1 month ago | [YT] | 192

C G

Counterpoint: I'm never going to ask someone made of antimatter to make me pie so i guess you could say this problem doesn't....


Matter

1 month ago | [YT] | 178

Arena Closer

1:18 "Not knowing left and right could impair intergalactic culinary relations"


This is of upmost importance.

1 month ago | [YT] | 18

SpookyNooky

Addendum: The aliens have an antimatter Samuel R. Jackson.

1 month ago | [YT] | 26