Pomeron trajectory and the core-valence quark model

We study the behavior of the Pomeron (including the second component) in the framework of the corevalence quark model of hadrons. Total cross sections and particle-antiparticle total-cross-section differences, as derived from the model, are compared with the experimental data. The assumption that the two components of the Pomeron have the same $\ln p_{\mathrm{lab}}$ behavior and that the Reggeon term behaves like ${p_{\mathrm{lab}}}^{-0.5\mathrm{}}$ yields results which are in agreement with total-cross-section measurements for $10\le p_{\mathrm{lab}}\le 280$ GeV. Extending quark-model sum rules to nonzero $t$, we determine the Pomeron trajectory from $\pi p$ and $\mathrm{Kp}$ elastic-scattering measurements. This is found to agree with the effective trajectory ${\alpha }_{\mathrm{eff}}\mathrm{}\left(t\right)=(0.84\mathrm{}\pm 0.11)+(0.47\pm 0.21)t$ which we derive from the reaction $\gamma p\to \phi p$.