22-28 July 2010
Palais des Congrès de Paris
Europe/Paris timezone

The nucleon's transversity and the photon's distribution amplitude probed in lepton pair photoproduction

22 Jul 2010, 09:30
8m
Salle 251 ()

Salle 251

Parallel Session Talk 04 - Hadronic Structure, Parton Distributions, soft QCD, Spectroscopy 04 - Hadronic Structure, Parton Distributions, soft QCD, Spectroscopy

Speaker

Lech Szymanowski (Soltan INS, Warsaw)

Description

We describe a new way to access the chiral odd transversity parton distribution in the proton through the photoproduction of lepton pairs. The basic ingredient is the interference of the usual Bethe Heitler or Drell-Yan amplitudes with the amplitude of a process, where the photon couples to quarks through its chiral-odd distribution amplitude, which is normalized to the magnetic susceptibility of the QCD vacuum. A phenomenology of single and double spin observables emerges from the unusual features of this amplitude (Phys.Rev.Lett.103:072002,2009).

Primary author

Lech Szymanowski (Soltan INS, Warsaw)

Co-author

Bernard Pire (CPHT Ecole Polytechnique)

Presentation Materials