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Séminaires, soutenances

QCD Spin Physics and Equations of Motion

Name: QCD Spin Physics and Equations of Motion
Start: 2008-03-04T14:30:00+01:00
End: 2008-03-04T15:30:00+01:00
Location: No location set

par Dr Elvio DiSalvo (INFN/Genova)

mardi 4 mars 2008, 14:30 → 15:30 Europe/Paris

Amphi de Recherche

Description

The Politzer theorem on equations of motion allows to obtain an expansion of the hadronic tensor in terms of Feynman-Cutkosky diagrams, whose "soft" parts result to be strongly constrained. Several approximate relations among different distribution functions are derived. Moreover an energy scale is fixed, determining the Q^2 dependence of many azimuthal asymmetries in semiinclusive deep inelasic scattering, in Drell-Yan and in e+e- inclusive anninilation into two hadrons. Two of these theoretical results are compared with data and measurements in forthcoming experiments are suggested.