Role of $\sigma$ exchange in the $\gamma p\to \phi p$ process and scaling with the $f_1$ axial vector meson from a Reggeized model

We investigate the role driven by the scalar meson $σ$ exchange in the photoproduction of the vector meson $ϕ$ (1020) off a proton by using a Reggeized model. Based on the $π^{0} (135) + σ (500) + f_{2} (1270)$ +Pomeron exchanges, we demonstrate that the $σ$ exchange plays the role to reproduce the bump structure at the forward angle in the differential cross section as well as the peaking behavior in the total cross section observed in the CLAS Collaboration. We also discuss the possible observation of the scaled cross section $s^{7} d σ / d t$ at the production angle $θ = 90^{\circ}$ from the CLAS data. It is found that the axial vector meson $f_{1} (1285)$ exchange with the trajectory $α_{f_{1}} (t) = 0.028 t + 0.9 \pm 0.2$ arising from the axial anomaly of the QCD vacuum plays the role to clarify the scaling up to 5 GeV.

Role of $σ$ exchange in the $γ p \to ϕ p$ process and scaling with the $f_{1}$ axial vector meson from a Reggeized model

文献摘要

讨论

讲解博客

AI智能校验

Role of $σ$ exchange in the $γ p \to ϕ p$ process and scaling with the $f_{1}$ axial vector meson from a Reggeized model

文献摘要

讨论

讲解博客

AI智能校验

Role of σσ exchange in the γp→ϕpγp→ϕp process and scaling with the f1f1​ axial vector meson from a Reggeized model

文献摘要

讨论

|讲解博客

|AI智能校验

Role of σσ exchange in the γp→ϕpγp→ϕp process and scaling with the f1f1​ axial vector meson from a Reggeized model

文献摘要

讨论

|讲解博客

|AI智能校验

Role of $σ$ exchange in the $γ p \to ϕ p$ process and scaling with the $f_{1}$ axial vector meson from a Reggeized model

讲解博客

AI智能校验

Role of $σ$ exchange in the $γ p \to ϕ p$ process and scaling with the $f_{1}$ axial vector meson from a Reggeized model

讲解博客

AI智能校验