2004/09/01 by Lars Fromme, L. Fromme · 2 citations
Physics and Astronomy · #Asymmetry #Baryogenesis #Baryon #Baryon asymmetry #Baryon number #Black Holes and Theoretical Physics #Electroweak interaction #Higgs boson #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #WKB approximation #hep-ph
paper · pdf · doi:10.1080/01422410500160212
published in Surveys In High Energy Physics 19(3-4), 193-201 (Taylor & Francis) · 10 pages, 4 figures, Talk given at the 8th International Moscow School of Physics
openalex publication_date 2004/09/01 · arxiv created 2005/04/25 · arxiv updated 2015/06/25 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We present the computation of the baryon asymmetry in the SM amplified by dimension-6 Higgs interactions using the WKB approximation. Analyzing the one-loop potential it turns out that the phase transition is strongly first order in a wide range of the parameters. It is ensured not to wash out the net baryon number gained previously even for Higgs masses up to at least 170 GeV. In addition dimension-6 operators induce new sources of CP violation. Novel source terms which enhance the generated baryon asymmetry emerge in the transport equations. This model predicts a baryon to entropy ratio close to the observed value for a large part of the parameter space. The speech was mainly based on our recent work (D. Bödeker, L. Fromme, S.J. Huber, M. Seniuch, The baryon asymmetry in the standard model with a low cut-off, JHEP 0502 026 (2005) [hep-ph/0412366]).