2008/08/08 by Daniel J. H. Chung, Björn Garbrecht, Bjorn Garbrecht +2
Physics and Astronomy · #Asymmetry #Baryogenesis #Baryon #Baryon asymmetry #Black Holes and Theoretical Physics #Electron #Electroweak interaction #High-Energy Particle Collisions Research #Lepton #Minimal Supersymmetric Standard Model #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quark #Supersymmetry #Top quark #Yukawa potential #hep-ph
paper · pdf · doi:10.1103/physrevlett.102.061301
published as Phys.Rev.Lett.102:061301,2009 · 4 pages, 1 figure
arxiv created 2008/08/08 · openalex publication_date 2009/02/11 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We analyze the quantum transport equations for supersymmetric electroweak baryogenesis including previously neglected bottom and tau Yukawa interactions and show that they imply the presence of a previously unrecognized dependence of the cosmic baryon asymmetry on the spectrum of third generation quark and lepton superpartners. For fixed values of the CP-violating phases in the supersymmetric theory, the baryon asymmetry can vary in both magnitude and sign as a result of the squark and slepton mass dependence. For light, right-handed top and bottom quark superpartners, the baryon number creation can be driven primarily by interactions involving third generation leptons and their superpartners.