Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1994-08-22
Phys.Rev.Lett.75:1695-1698,1995; Erratum-ibid.75:3375,1995
Physics
High Energy Physics
High Energy Physics - Phenomenology
11 pages, revtex, no figures, version published in Phys. Rev. Lett., with one minor numerical correction and updated reference
Scientific paper
10.1103/PhysRevLett.75.1695
We describe a new effect which produces baryons at a first order electroweak phase transition. It operates when there is a CP-violating field present on propagating bubble walls. The novel aspect is that it involves a purely classical force, which alters the motion of particles across the wall and through diffusion creates a chiral asymmetry in front of the wall. We develop a technique for computing the baryon asymmetry using the Boltzmann equation, and a fluid approximation which allows us to model strong scattering effects. The final formula for the baryon asymmetry has a remarkably simple form.
Joyce Michael
Prokopec Tomislav
Turok Neil
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