How to pronounce “cpt” in English

And CPT symmetry, it turns out, is kind of a big deal.

What happens if CPT gets broken?

then it must be CPT symmetric.

If you break CPT symmetry, then this core principle also breaks.

And so conserved CPT as a whole.

or even a CPT altogether.

Now one of the reasons why CPT and the standard model go so well together is because it really is built into the very structure of special relativity.

Now the combination of all of these symmetries combined is called CPT symmetry.

- And so are people now getting nervous about CPT?

But on the other hand, if CPT symmetry breaks, it tears down our best theories with it.

It has to be charged for in one of 7,000 different-- what's called CPT.

An asymmetry that could explain that one in a billion discrepancy, while also maintaining the larger CPT symmetry.

So the next big question on everyone's mind was, is CPT symmetry also going to fail and take down the standard model with it?

Makoto Kobayashi and Toshihide Maskawa found a way to explain all the observed P and CP violation while maintaining CPT symmetry.

They'll sometimes do it eight or 10 different tubes, EDTA or CPT tubes you can see up on the right.

Part of why is because gravity does not obey the rules of special relativity, which means it doesn't have to obey the CPT theorem like the CERN model does.