Diffractive Rho Meson Electroproduction at High Q2 and High |t|
Abstract
The electroproduction of rho mesons is studied at HERA with the H1 detector at high Q2 and high |t|. Cross sections are measured as a function of Q2, W and t. The W dependence of the gamma*-p cross section is observed to increase with Q2 from values compatible with soft Pomeron exchange at low Q2 to a hard dependence at large Q2. Spin density matrix elements are measured and their dependence is compared with a two gluon exchange model.
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