Abstract
Bödeker has recently shown that the high temperature sphaleron rate, which measures baryon number violation in the hot standard model, receives logarithmic corrections to its leading parametric behavior; Γ= κ′[log( m D / g 2 T)+ O(1)]( g 2 T 2/ m D 2) α W 5 T 4. After discussing the physical origin of these corrections, I compute the leading log coefficient numerically: κ′=10.8±0.7. The log is fairly small relative to the O(1) “correction;” so non-logarithmic contributions dominate at realistic values of the coupling.
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