ar X iv : h ep - p h / 97 02 24 5 v 2 1 7 O ct 1 99 7 The Static Potential in QCD – a full Two - Loop Calculation ∗

ep - p h / 97 02 24 5 v 1 4 F eb 1 99 7 The Static Potential in QCD – a full Two - Loop Calculation ∗

A full analytic calculation of the two-loop diagrams contributing to the static potential in QCD is presented in detail. Using a renormalization group improvement, the “three-loop” potential in momentum space is thus derived and the third coefficient of the β-function for the V -scheme is given. The Fourier transformation to position space is then performed, and the result is briefly discussed.

ar X iv : h ep - p h / 02 10 15 7 v 1 1 0 O ct 2 00 2 1 Jet Physics at Two - Loop Accuracy ∗

Current phenomenological studies of jet observables at colliders are clearly limited by the theoretical uncertainties inherent in the next-to-leading order QCD description. We discuss the recent progress made towards the calculation of QCD corrections to jet observables at the next-to-next-to-leading order in QCD and highlight future perspectives and yet open issues.

ar X iv : h ep - p h / 97 10 24 9 v 1 6 O ct 1 99 7 HADRONIC PHYSICS FROM THE LATTICE

ar X iv : h ep - p h / 97 10 23 0 v 1 3 O ct 1 99 7 KEK - TH - 546 Oct . ’ 97 Domain wall solution for vectorlike model

Domain wall solution for Nc = Nf supersymmetric QCD is constructed. Astrophysical implications of the domain wall configuration is also discussed. [email protected] 1

ar X iv : h ep - p h / 96 12 39 4 v 2 1 7 M ar 1 99 7 Order - α 3 s determination of the strange quark mass

We present a QCD sum rule calculation of the strange-quark mass including four-loop QCD corrections to the correlator of scalar currents. We obtain ¯ m s (1 GeV) = 205.5 ± 19.1 MeV.