$σ_L/σ_T$ in the $ρ^0$ - meson diffractive electroproproduction

Details $σ_L/σ_T$ in the $ρ^0$ - meson diffractive electroproproduction $σ_L/σ_T$ in the $ρ^0$ - meson diffractive electroproproduction

1997-04-10

arxiv.org/abs/hep-ph/9704279v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, Latex + 2 figures, epsfig.sty

Scientific paper

The background due to the direct diffractive dissociation of the photon into the $\pi^+\pi^-$-pair to the "elastic" diffractive $\rho^0$-meson production in electron-proton collisions is calculated. At large $Q^2$ the interference between resonant and non-resonant $\pi^+ \pi^-$ production changes the $\sigma^L/\sigma^T$ ratio with the mass of the $2\pi$ (i.e. $\rho^0$-meson) state.

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