Supersymmetric Electroweak Baryogenesis

Abstract

We calculate the baryon asymmetry generated at the electroweak phase transition in the minimal supersymmetric standard model, using a new method to compute the CP-violating asymmetry in the Higgsino flux reflected into the unbroken phase. The method is based on a Higgs insertion expansion. We find that the CP asymmetry at leading order is proportional to the change in $\tan \beta$ in the bubble wall, which is at most of order $10^{-2}$, while at next-to-leading order this suppression factor disappears. This result may enhance the final baryon asymmetry generated during the electroweak phase transition for small $\Delta \beta (<10^{-3}$).

16 pages, LaTeX, 3 ps figures, minor changes added, one reference added

Cited by in corpus (28)

• Improved Results in Supersymmetric Electroweak Baryogenesis
• Supersymmetric CP-violating Currents and Electroweak Baryogenesis
• A Second Higgs Doublet in the Early Universe: Baryogenesis and Gravitational Waves
• Higgs-Mediated Electric Dipole Moments in the MSSM: An Application to Baryogenesis and Higgs Searches
• Electroweak Baryogenesis: Concrete in a SUSY Model with a Gauge Singlet
• Transport equations for chiral fermions to order \hbar and electroweak baryogenesis: Part II
• Quantum Transport and Electroweak Baryogenesis
• Electroweak Baryogenesis and New TeV Fermions
• MSSM Electroweak Baryogenesis and Flavour Mixing in Transport Equations
• Electroweak Baryogenesis in a Supersymmetric U(1)' Model
• Two Higgs doublet dynamics at the electroweak phase transition: a non-perturbative study
• Kinetic description of fermion flavor mixing and CP-violating sources for baryogenesis
• Semiclassical force for electroweak baryogenesis: three-dimensional derivation
• Generating the Observed Baryon Asymmetry from the Inflaton Field
• Coherent quantum Boltzmann equations from cQPA
• Electroweak baryogenesis in aligned two Higgs doublet models
• Towards a kinetic theory for fermions with quantum coherence
• Electroweak Baryogenesis, CDM and Anomaly-free Supersymmetric U(1)-prime Models
• Neutral Higgs Sector of the MSSM without $R_p$
• Electroweak Phase Transition and Baryogenesis
• Electroweak baryogenesis and the Higgs and stop masses
• Flavour-coherent propagators and Feynman rules: Covariant cQPA formulation
• Effects of Large CP-violating Soft Phases on Supersymmetric Electroweak Baryogenesis
• Quantum kinetic theory with nonlocal coherence
• Domain walls and CP violation with left right supersymmetry:implications for leptogenesis and electron EDM
• Studying Electroweak Baryogenesis using Evenisation and the Wigner Formalism
• Kinetic approach to electroweak baryogenesis
• On Electroweak Baryogenesis in Gauge Mediated Models with Messenger-Matter Mixing