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arXiv · 0808.1144

Yukawa Interactions and Supersymmetric Electroweak Baryogenesis

Daniel J. H. Chung·Bjorn Garbrecht·Michael J. Ramsey-Musolf·Sean Tulin
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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.

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Daniel J. H. Chung, Bjorn Garbrecht, Michael J. Ramsey-Musolf, Sean Tulin. 2008-08-08. Yukawa Interactions and Supersymmetric Electroweak Baryogenesis. https://doi.org/10.1103/physrevlett.102.061301

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