Author:
Yang Cheng Tao,Rafelski Johann
Abstract
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± + νμ → 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.
Cited by
1 articles.
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