Exclusive hadronization in gamma* gamma -> pi pi

Details Exclusive hadronization in gamma* gamma -> pi pi Exclusive hadronization in gamma* gamma -> pi pi

1999-07-22

arxiv.org/abs/hep-ph/9907453v2

Nucl.Phys.Proc.Suppl.82:322-326,2000

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, 1 figure. Talk given at PHOTON 99, Freiburg, Germany, 23-27 May 1999. Eq. (8) corrected

Scientific paper

10.1016/S0920-5632(00)00172-9

We perform a QCD analysis of exclusive two-meson production in gamma* gamma collisions in the kinematical domain of large photon virtuality Q^2 and small hadronic invariant mass W^2. In these kinematics the amplitude factorizes into a perturbative subprocess gamma* gamma -> q qbar and a two-meson distribution amplitude. This opens the way to study new hadronic matrix elements related with the physics of hadronization and confinement.

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