Hylogenesis
Physical theory about dark matter and antimatter
Hylogenesis is a physical theory about the mechanism behind the origins of dark matter and antimatter. It was proposed in August 2010 in a paper by Hooman Davoudiasl, David E. Morrissey, Kris Sigurdson and Sean Tulin.
The theory involves a fermion X, and its antiparticle X, both of which may couple into quarks in the visible sector, and into hidden particles in a hidden sector, a sector which is not part of the Standard Model. The hidden states have masses near a GeV and very weak couplings to particles in the Standard Model. X and X respectively decay into either baryonic matter or hidden baryonic matter, and into either antibaryonic matter or hidden antibaryonic matter, violating CP and quark baryon number.
An excess of baryonic matter is created in the visible sector, and an excess of antimatter is created in the hidden sector. The hidden antimatter is explained as being stable dark matter. The X and X particles have a conserved baryon number charge, so equal and opposite charges appear in the visible and hidden sectors. Therefore, the Universe's total baryon charge stays zero.
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This entry incorporates text from “Hylogenesis” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.