Vector Meson Production at Hera
نویسنده
چکیده
Vector meson (VM) production at HERA is illustrated in Fig. 1(left): the intermediate photon converts into a diffractively scattered qq̄ pair forming a VM, while the proton remains intact or is diffractively excited into the system Y . Here Q is the negative square of the photon four-momentum, W the photonproton center of mass energy (W ≃ Q/x, x being the Bjorken scaling variable) and t the square of the four-momentum transfer at the proton vertex.
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