A novel global charge conservation in the symmetric phase of the early Universe

In the Standard Model at high temperatures, anomalous effects contribute to the violation of baryon number (\(B\)) and lepton number (\(L\)), separately, while \(B-L\) remains conserved. There are also corresponding changes in the helicity of the hypermagnetic field (\(h\)) and the Chern-Simons numb...

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Bibliographic Details
Published inarXiv.org
Main Authors Abbaslu, S, Abdolhoseini, M, Moghaddam, P E, Gousheh, S S
Format Paper
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 02.08.2024
Subjects
Antimatter
Baryons
Fermions
Helicity
High temperature
Leptons
Universe
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Summary:In the Standard Model at high temperatures, anomalous effects contribute to the violation of baryon number (\(B\)) and lepton number (\(L\)), separately, while \(B-L\) remains conserved. There are also corresponding changes in the helicity of the hypermagnetic field (\(h\)) and the Chern-Simons numbers of the non-Abelian gauge fields (\(N_{\rm CS,W}\) and \(N_{\rm CS,S}\)). In this study, we investigate a baryogenesis process in the symmetric phase of the early Universe by taking into account the Abelian and non-Abelian anomalous effects as well as the perturbative chirality-flip processes of all fermions. We calculate explicitly the time evolution of all relevant physical quantities, including those of \(h\) and \(N_{\rm CS,W}\), and show that there is another conserved global charge involving total matter-antimatter asymmetry \(B+L\), hypermagnetic helicity \(h_B\) and \(N_{\rm CS,W}\).
ISSN:2331-8422