Diffractive Ρ Meson Electroproduction at High Q 2 and High |t|
نویسنده
چکیده
The electroproduction of ρ mesons is studied at HERA with the H1 detector at high Q and high |t|. Cross sections are measured as a function of Q, W and t. The W dependence of the γ∗p cross section is observed to increase with Q from values compatible with soft Pomeron exchange at low Q to a hard dependence at large Q. Spin density matrix elements are measured and their dependence is compared with a two gluon exchange model.
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تاریخ انتشار 2002