Figure 11
From: Exclusive ρ0 production in deep inelastic scattering at HERA
A compilation of the value of the slope b from a fit of the form dσ/d|t| ∝ e-b|t| for exclusive vector-meson electroproduction, as a function of Q2 + M2. Also included is the DVCS result. The inner error bars indicate the statistical uncertainty, the outer error bars represent the statistical and systematic uncertainty added in quadrature.