Two - Photon Physics as a Probe of Uadron Dynamics
نویسنده
چکیده
Two-photon collisions provide an ideal laboratory for testing lnany features of quantum chromodynamics, espaially the interplay between the vector-meson-dominated and point-like hadronic interactions of the photon. A number of QCD applications are discussed, including: jet and single-particle production at large transverse momentum; the photon structure function and its relationship to the y + qE wave function; and the possible role of gluonium states in the yy + pop0 channel. We also discuss evidence that even low momentum transfer photon-hadron interactions are sensitive to the point-like y + q's coupling.
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