Difference between revisions
baryogenesis
Status and infobox
- status:
—→ open - kind:
—→ problem - year:
—→ 1967 - statement:
—→ Why does the universe contain matter but almost no antimatter?
Source +18 −0
+---
+title: Matter–antimatter asymmetry
+kind: problem
+status: open
+year: 1967
+authors: Andrei Sakharov's conditions
+statement: Why does the universe contain matter but almost no antimatter?
+space: origins
+---
+The Big Bang should have made equal amounts, which would have annihilated. About one extra matter particle per billion pairs survived. The Standard Model's CP violation is far too weak to explain that excess, so something beyond it is required.
+
+Posed 1967, Andrei Sakharov's conditions.
+
+## Sources
+
+- [Wikipedia: Baryon asymmetry](https://en.wikipedia.org/wiki/Baryon_asymmetry)
+
+[[Space:origins|Origins of the universe]] · [[Continent:cosmos|Cosmos]]
Revision 106 as rendered
The Big Bang should have made equal amounts, which would have annihilated. About one extra matter particle per billion pairs survived. The Standard Model's CP violation is far too weak to explain that excess, so something beyond it is required.
Posed 1967, Andrei Sakharov's conditions.