Prof. Gavin Salam FRS: Publications

Extending QCD perturbation theory to higher energies

Physics Letters B Elsevier 576:1-2 (2003) 143-151

Authors:

M Ciafaloni, D Colferai, GP Salam, AM Staśto

The gluon splitting function at moderately small x

(2003)

Authors:

Marcello Ciafaloni, Dimitri Colferai, Gavin P Salam, Anna M Stasto

Renormalisation group improved small-x Green's function

(2003)

Authors:

M Ciafaloni, D Colferai, GP Salam, AM Stasto

Extending QCD perturbation theory to higher energies

(2003)

Authors:

M Ciafaloni, D Colferai, GP Salam, AM Stasto

Theory and phenomenology of non-global logarithms

ArXiv hep-ph/0305232 (2003)

Authors:

RB Appleby, GP Salam

Abstract:

We discuss the theoretical treatment of non-global observables, those quantities that are sensitive only to radiation in a restricted region of phase space, and describe how large `non-global' logarithms arise when we veto the energy flowing into the restricted region. The phenomenological impact of non-global logarithms is then discussed, drawing on examples from event shapes in DIS and energy-flow observables in 2-jet systems. We then describe techniques to reduce the numerical importance of non-global logarithms, looking at clustering algorithms in energy flow observables and the study of associated distribution of multiple observables.

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