Phenomenology of $f_2(1270)$ photoproduction at energies measured with the CLAS facility

K. E. S. Mendes; D. T da Silva; M. L. L. da Silva

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arXiv · 2604.28063

Phenomenology of $f_2(1270)$ photoproduction at energies measured with the CLAS facility

K. E. S. Mendes·D. T da Silva·M. L. L. da Silva

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Abstract

We investigate the photoproduction of the tensor meson $f_2(1270)$ on the proton within a Regge-based framework, focusing on the reaction $\gamma p \to p f_2(1270)$ in the few-GeV energy region. The production mechanism is modeled through the exchange of vector-meson Regge trajectories in the $t$-channel, including both $\rho$ and $\omega$ exchanges with phenomenologically motivated couplings. The scattering amplitudes are derived using Reggeized propagators and effective hadronic vertices, allowing for the calculation of differential cross sections in the narrow-width approximation. We further extend the analysis to the $\pi^+\pi^-$ invariant mass distribution by incorporating a relativistic Breit--Wigner description of the $f_2(1270)$ resonance.

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K. E. S. Mendes, D. T da Silva, M. L. L. da Silva. 2026-04-30. Phenomenology of $f_2(1270)$ photoproduction at energies measured with the CLAS facility. https://arxiv.org/abs/2604.28063

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