We have determined non-perturbative values of the O(a) improvement coefficient csw in three-flavor dynamical QCD for the RG improved as well as the plaquette gauge actions, using the SchrGdinger functional scheme. Results are compared with l-loop estimates at weak gauge coupling. 0 non-perturbative
Recent three loop calculations in perturbative QCD
โ Scribed by J.A. Gracey
- Publisher
- Elsevier Science
- Year
- 2004
- Tongue
- English
- Weight
- 325 KB
- Volume
- 133
- Category
- Article
- ISSN
- 0920-5632
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
We calculate the third coefficient of the lattice beta function in QCD with Wilson fermions, extending the pure gauge results of Liischer and Weiss; we show how this coefficient modifies the scaling function on the lattice. We also calculate the three-loop average plaquette in the presence of Wilso
As a first step towards the complete calculation of deep-inelastic scattering at third order of massless perturbative QCD, we have computed the fermionic (nf) contributions to the flavour non-singlet structure functions in unpolarized electromagnetic scattering. We briefly discuss the approach chose
The static potential constitutes a fundamental quantity of Quantum Chromodynamics. It has recently been evaluated to three-loop accuracy. In this contribution we provide details on the calculation and present results for the 14 master integrals which contain a massless one-loop insertion.