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- W3106161307 abstract "We investigate the evolution of the baryon asymmetry of the Universe (BAU) in its symmetric phase before the electroweak phase transition (EWPT) induced by leptogenesis in the hypermagnetic field of an arbitrary structure and with a maximum hypermagnetic helicity density. The novelty of this work is that the BAU has been calculated for a continuous hypermagnetic helicity spectrum. The observed BAU $B_{obs} = 10^{-10}$ that can be in large-scale hypermagnetic fields satisfying the wave number inequality $k leq k_{max}$ grows with increasing $k_{max}$. We will also show that the initial right-handed electron asymmetry $xi_{eR}(eta_0)$ used in our leptogenesis model as a free parameter cannot take too large values, $xi_{eR}(eta_0) = 10^{-4}$, because this leads to a negative BAU by the EWPT time. In contrast, a sufficiently small initial right-handed electron asymmetry, $xi_{eR}(eta_0)$, provides its further growth and the corresponding BAU growth from zero to some positive value,including the observed $B_{obs} = 10^{-10}$." @default.
- W3106161307 created "2020-11-23" @default.
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- W3106161307 date "2015-02-01" @default.
- W3106161307 modified "2023-10-12" @default.
- W3106161307 title "Leptogenesis in the symmetric phase of the early universe: Baryon asymmetry and hypermagnetic helicity evolution" @default.
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- W3106161307 doi "https://doi.org/10.1134/s1063776115020053" @default.
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