Infrared Renormalization Group Flow for Heavy Quark Masses

Details Infrared Renormalization Group Flow for Heavy Quark Masses Infrared Renormalization Group Flow for Heavy Quark Masses

2008-03-31

arxiv.org/abs/0803.4214v2

Phys.Rev.Lett.101:151602,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 2 figures, Added explicit result for the top MSbar mass with uncertainties

Scientific paper

10.1103/PhysRevLett.101.151602

A short-distance heavy quark mass depends on two parameters, the renormalization scale mu controlling the absorption of ultraviolet fluctuations into the mass, and a scale R controlling the absorption of infrared fluctuations. 1/R can be thought of as the radius for perturbative corrections that build up the mass beyond its point-like definition in the pole scheme. Treating R as a variable gives a renormalization group equation. We argue that the sign of this anomalous dimension is universal: increasing R to add IR modes decreases m(R). The flow improves the stability of conversions between mass schemes, allowing us to avoid large logs and the renormalon. The flow in R can be used to study IR renormalons without using bubble chains, and we use it to determine the coefficient of the LambdaQCD renormalon ambiguity of the pole mass with a convergent sum-rule.

Affiliated with

Also associated with

No associations

Rating

Infrared Renormalization Group Flow for Heavy Quark Masses 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 Infrared Renormalization Group Flow for Heavy Quark Masses, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Infrared Renormalization Group Flow for Heavy Quark Masses will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-196651