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Cold Baryogenesis from first principles in the two-Higgs doublet model with fermions

Mou, Zong-Gang; Saffin, Paul M.; Tranberg, Anders

Authors

Zong-Gang Mou

Paul M. Saffin

Anders Tranberg



Abstract

We present a first-principles numerical computation of the baryon asymmetry in electroweak-scale baryogenesis. For the scenario of Cold Baryogenesis, we consider a one fermion-family reduced CP-violating two Higgs-doublet model, including a classical SU(2)-gauge/two-Higgs sector coupled to one quantum left-handed fermion doublet and two right-handed singlets. Separately, the C(CP) breaking of the two-Higgs potential and the C and P breaking of the gauge-fermion interactions do not provide a baryon asymmetry. Only when combined does baryogenesis occur. Through large-scale computer simulations, we compute the asymmetry for one particularly favourable scalar potential. The numerical signal is at the boundary of what is numerically discernible with the available computer resources, but we tentatively find an asymmetry of |η|≤3.5×10−7.

Journal Article Type Article
Publication Date Jun 24, 2015
Journal Journal of High Energy Physics
Electronic ISSN 1029-8479
Publisher Springer Verlag
Peer Reviewed Peer Reviewed
Volume 2015
APA6 Citation Mou, Z., Saffin, P. M., & Tranberg, A. (2015). Cold Baryogenesis from first principles in the two-Higgs doublet model with fermions. Journal of High Energy Physics, 2015, https://doi.org/10.1007/JHEP06%282015%29163
DOI https://doi.org/10.1007/JHEP06%282015%29163
Keywords Cosmology of Theories beyond the SM, Nonperturbative Effects, CP violation, Lattice Quantum Field Theory
Publisher URL https://link.springer.com/article/10.1007%2FJHEP06%282015%29163
Copyright Statement Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0





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