Analytic techniques for solving the transport equations in electroweak baryogenesis

Research output: Contribution to journal › Article › Research › peer review

Authors

  • Elina Fuchs
  • Marta Losada
  • Yosef Nir
  • Yehonatan Viernik

External Research Organisations

  • Weizmann Institute of Science
  • Fermi National Accelerator Laboratory (Fermilab)
  • University of Chicago
  • New York University Abu Dhabi
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Details

Original languageEnglish
Article number60
Number of pages32
JournalJHEP
Volume2021
Issue number7
Publication statusPublished - 12 Jul 2021
Externally publishedYes

Abstract

We develop an efficient method for solving transport equations, particularly in the context of electroweak baryogenesis. It provides fully-analytical results under mild approximations and can also test semi-analytical results, which are applicable in more general cases. Key elements of our method include the reduction of the second-order differential equations to first order, representing the set of coupled equations as a block matrix of the particle densities and their derivatives, identification of zero modes, and block decomposition of the matrix. We apply our method to calculate the baryon asymmetry of the Universe (BAU) in a Standard Model effective field theory framework of complex Yukawa couplings to determine the sensitivity of the resulting BAU to modifications of various model parameters and rates, and to estimate the effect of the commonly-used thin-wall approximation.

Keywords

    Beyond Standard Model, CP violation, Cosmology of Theories beyond the SM

ASJC Scopus subject areas

Cite this

Analytic techniques for solving the transport equations in electroweak baryogenesis. / Fuchs, Elina; Losada, Marta; Nir, Yosef et al.
In: JHEP, Vol. 2021, No. 7, 60, 12.07.2021.

Research output: Contribution to journal › Article › Research › peer review

Fuchs E, Losada M, Nir Y, Viernik Y. Analytic techniques for solving the transport equations in electroweak baryogenesis. JHEP. 2021 Jul 12;2021(7):60. doi: 10.48550/arXiv.2007.06940, 10.1007/JHEP07(2021)060
Fuchs, Elina ; Losada, Marta ; Nir, Yosef et al. / Analytic techniques for solving the transport equations in electroweak baryogenesis. In: JHEP. 2021 ; Vol. 2021, No. 7.
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