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Tübingen 2003 – scientific programme

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HK: Physik der Hadronen und Kerne

HK 26: Theorie III

HK 26.3: Talk

Wednesday, March 19, 2003, 11:30–11:45, D

EXCLUSIVE PHOTOPRODUCTION OF HARD DIJETS AND MAGNETIC SUSCEPTIBILITY OF QCD VACUUM — •Stefan Gottwald1, Vladimir M. Braun1, Dimitri Yu. Ivanov1, Andreas Schäfer1, and Lech Szymanowski21Institut für Theoretische Physik, Universität Regensburg, D-93040 Regensburg, Germany — 2CPhT, École Polytechnique, F-91128 Palaiseau, France

We argue that coherent production of hard dijets by linearly polarized real photons can provide direct evidence for chirality violation in hard processes, the first measurement of the magnetic susceptibility of the quark condensate and the photon distribution amplitude. It can also serve as a sensitive probe of the generalized gluon parton distribution.

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