A New Source for Electroweak Baryogenesis in the MSSM

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dc.creatorCline, James M.
dc.creatorKainulainen, Kimmo
dc.date2000-02-25
dc.date2000-11-30
dc.date.accessioned2026-07-07T11:34:59Z
dc.date.available2026-07-07T11:34:59Z
dc.descriptionOne of the most experimentally testable explanations for the origin of the baryon asymmetry of the universe is that it was created during the electroweak phase transition, in the minimal supersymmetric standard model. Previous efforts have focused on the current for the difference of the two Higgsino fields, $H_1-H_2$, as the source of biasing sphalerons to create the baryon asymmetry. We point out that the current for the orthogonal linear combination, $H_1+H_2$, is larger by several orders of magnitude. Although this increases the efficiency of electroweak baryogenesis, we nevertheless find that large CP-violating angles $\ge 0.15$ are required to get a large enough baryon asymmetry.
dc.description4 pages, 2 figures; numerical error corrected, which implies that large CP violation is needed to get observed baryon asymmetry. We improved solution of diffusion equations, and computed more accurate values for diffusion coefficient and damping rates
dc.identifierhttps://arxiv.org/abs/hep-ph/0002272
dc.identifierhttp://arxiv.org/abs/hep-ph/0002272
dc.identifierPhys.Rev.Lett.85:5519-5522,2000
dc.identifierdoi:10.1103/PhysRevLett.85.5519
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/198445
dc.subjectHigh Energy Physics - Phenomenology
dc.titleA New Source for Electroweak Baryogenesis in the MSSM
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