Accurate Determinations of $α_s$ from Realistic Lattice QCD

Details Accurate Determinations of $α_s$ from Realistic Lattice QCD Accurate Determinations of $α_s$ from Realistic Lattice QCD

2005-03-07

arxiv.org/abs/hep-lat/0503005v2

Phys.Rev.Lett. 95 (2005) 052002

Physics

High Energy Physics

High Energy Physics - Lattice

4 pages, 2 figures, 1 table. The revised version differs from the original because we now use 4-loop beta functions (rather th

Scientific paper

10.1103/PhysRevLett.95.052002

We obtain a new value for the QCD coupling constant by combining lattice QCD simulations with experimental data for hadron masses. Our lattice analysis is the first to: 1) include vacuum polarization effects from all three light-quark flavors (using MILC configurations); 2) include third-order terms in perturbation theory; 3) systematically estimate fourth and higher-order terms; 4) use an unambiguous lattice spacing; and 5) use an $\order(a^2)$-accurate QCD action. We use 28~different (but related) short-distance quantities to obtain $\alpha_{\bar{\mathrm{MS}}}^{(5)}(M_Z) = 0.1170(12)$.

Affiliated with

Also associated with

No associations

Rating

Accurate Determinations of $α_s$ from Realistic Lattice QCD 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 Accurate Determinations of $α_s$ from Realistic Lattice QCD, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Accurate Determinations of $α_s$ from Realistic Lattice QCD will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-557396