The hot baryon violation rate is $O(α_W^5 T^4)$

Details The hot baryon violation rate is $O(α_W^5 T^4)$ The hot baryon violation rate is $O(α_W^5 T^4)$

1996-09-25

arxiv.org/abs/hep-ph/9609481v1

Phys.Rev.D55:6264-6273,1997

Physics

High Energy Physics

High Energy Physics - Phenomenology

27 pages, Latex, uses revtex, epsf macro packages

Scientific paper

10.1103/PhysRevD.55.6264

The rate per unit volume for anomalous electroweak baryon number violation at high temperatures, in the symmetric phase, has been estimated in the literature to be $O(\alpha_W^4 T^4)$ based on simple scaling arguments. We argue that damping effects in the plasma suppress the rate by an extra power of $\alpha_W$ to give $O(\alpha_W^5 T^4)$. We show how to understand this effect in a variety of ways ranging from an effective description of the long-distance modes responsible for baryon number violation, to a microscopic picture of the short-distance modes responsible for damping. In particular, we resolve an old controversy as to whether damping effects are relevant. Finally, we argue that similar damping effects should occur in numerical simulations of the rate in classical thermal field theory on a spatial lattice, and we point out a potential problem with simulations in the literature that have not found such an effect.

Affiliated with

Also associated with

No associations

Rating

The hot baryon violation rate is $O(α_W^5 T^4)$ does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The hot baryon violation rate is $O(α_W^5 T^4)$, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The hot baryon violation rate is $O(α_W^5 T^4)$ will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-112589