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Reactions Governing Strangeness Abundance in Primordial Universe
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Journal Article
Reactions Governing Strangeness Abundance in Primordial Universe
2022
Overview
Strangness production processes can balance natural strangeness decay in the early hadronic Universe. Comparing to the characteristic Hubble time 1/ H , the reaction rates for μ ± + ν μ → K ± , l − + l + → ϕ, and π+π → K in sequence become slower than expansion rate at T = 33.9 MeV, T = 25MeV and T = 20MeV respectively. This means that in the antibaryon annihilation epoch near to T ≃ 40MeV strangeness is in chemical equilibrium.
Publisher
EDP Sciences
Subject
