Higher order corrections in perturbative quantum chromodynamics

Perturbative Quantum Chromodynamics

Small-x Processes in Perturbative Quantum Chromodynamics

Infine, un " in bocca al lupo " alla Martina con la quale ho potuto condividere la sen-sazione di naufrago nell'incantevole mare della QCD.

Some Recent Developments in Perturbative Quantum Chromodynamics

This talk begins with a few general comments about the place of QCD studies. I go on to give a few words on the central role played by factorization and related concepts. A brief mention of some important steps forward in multiloop calculations is followed by a description of progress in abstracting classes of corrections at arbitrary order in perturbation theory. I will argue that the interpla...

Spin Effects in Perturbative Quantum Chromodynamics

The spin dependence of large momentum transfer exclusive and inclusive reactions can be used to test the gluon spin and other basic elements of QCD. In particular, exclusive processes including hadronic decays of heavy quark resonances have the potential of isolating QCD hard scattering subprocesses in situations where the helicities of all the interacting constituents are controlled. The predi...

Soft Gluon Effects in Perturbative Quantum Chromodynamics*

The problem of the inclusion of sub-leading logarithms to all orders of the perturbative expansion is considered and solved in the case of multiple soft gluon emission. The evaluation of the entire set of the _ sub-dominant contributions is performed in a consistent way at two loop level in the impact parameter space for the effective quark form factor. The effect of the inclusion of the single...