Yukawa interactions and supersymmetric electroweak baryogenesis

Daniel J.H. Chung, Björn Garbrecht, Michael J. Ramsey-Musolf, Sean Tulin

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51 Scopus citations

Abstract

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.

Original languageEnglish
Article number061301
JournalPhysical Review Letters
Volume102
Issue number6
DOIs
StatePublished - 11 Feb 2009
Externally publishedYes

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