Yukawa Interactions and Supersymmetric Electroweak Baryogenesis

Details Yukawa Interactions and Supersymmetric Electroweak Baryogenesis Yukawa Interactions and Supersymmetric Electroweak Baryogenesis

2008-08-08

arxiv.org/abs/0808.1144v1

Phys.Rev.Lett.102:061301,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 1 figure

Scientific paper

10.1103/PhysRevLett.102.061301

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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