Effect of Quark Scatter on Baryogenesis by Electroweak Strings
arXiv:hep-ph/9601339 · doi:10.1016/0927-6505(96)00021-7
Abstract
The amount of baryon asymmetry generated by the electroweak strings at a rough estimate is smaller than that generated by the bubble expansion since the collapsing strings cannot cover the whole volume of the universe. However, the interaction cross section of the strings with particles can be larger than the geometrical area of the order of the string thickness. The scattering cross section of quarks from the electroweak strings is calculated using Dirac equation in the string background. It it proportional to the reverse of the momentum perpendicular to the string axis. Thus the effective interaction area can be enhanced at least ten times so that the suppression compared to the first order phase transition scenario might be also improved.
12 pages (LaTeX), no figure, Astroparticle Physics (1996)
References in corpus (20)
- Progress in Electroweak Baryogenesis
- Baryon Asymmetry of the Universe in the Standard Model
- Electroweak String Configurations with Baryon Number
- Detailed Stability Analysis of Electroweak Strings
- Electroweak Baryogenesis with Electroweak Strings
- Fermions Destabilize Electroweak Strings
- Embedded Defects
- Cosmic Strings and Electroweak Baryogenesis
- Topologically Stable Electroweak Flux Tube
- "Topological" Formulation of Effective Vortex Strings
- Bound States Can Stabilize Electroweak Strings
- Particle Physics Models, Topological Defects and Electroweak Baryogenesis
- Cinderella Strings
- Stability of an electroweak string with a fermion condensate
- Topologically Stable Z - Strings in the Supersymmetric Standard Model
- Fermions on the Electroweak String
- Charged Particle Scattering from Electroweak and Semi-Local Strings
- Thermal fluctuations in electroweak phase transition
- Finite Fermion Density Effects on the Electroweak String
- Scattering from Electroweak Strings
Cited by in corpus (6)
- The Dirac Sea Contribution To The Energy Of An Electroweak String
- Topological Defects in the Georgi-Machacek Model
- String Holonomy and Extrinsic Geometry in Four-dimensional Topological Gauge Theory
- Bubble collisions in SU(2)xU(1) gauge theory and the production of non-topological strings
- Effect of pre-existing baryon inhomogeneities on the dynamics of quark-hadron transition
- Decay of baryon inhomogeneities in an expanding universe