Münster 2017 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 62: Astroteilchenphysik/Kosmologie (Theorie) 2

T 62.1: Vortrag

Dienstag, 28. März 2017, 16:45–17:00, VSH 17

CP-violation and baryon-asymmetry from varying Yukawas at the weak scale. — •Sebastian Bruggisser, Geraldine Servant, and Thomas Konstandin — DESY theory group / Notkestrasse 85 / 22607 Hamburg

Varying Yukawas open new possibilities for electroweak baryogenesis. In particular varying Yukawas, if somehow related to the mechanism of electro-weak symmetry breaking, can account for a strongly first order phase transition and they can provide a new source of CP-violation. In this talk I will focus on the CP-violation and the calculation of the final baryon-asymmetry. Starting from first principles, I will derive the general form of the CP-violating force and the diffusion equations for models with varying Yukawa couplings. This represents a very general framework to determine the baryon-asymmetry generated in a given model. I will discuss the necessary ingredients for successful baryogenesis and I will apply this framework to different models and discuss the CP-violation and the amount of baryon-asymmetry produced.