$ω- πγ^*$ transition form factor in proton-proton collisions

Details $ω- πγ^*$ transition form factor in proton-proton collisions $ω- πγ^*$ transition form factor in proton-proton collisions

2006-10-18

arxiv.org/abs/nucl-th/0610068v1

Eur.Phys.J.A31:233-243,2007

Physics

Nuclear Physics

Nuclear Theory

Scientific paper

10.1140/epja/i2006-10181-x

Dalitz decays of $\omega$ and $\rho$ mesons, $\omega\to \pi^0\gamma^*\to\pi^0 e^+e^-$ and $\rho^0\to \pi^0\gamma^*\to\pi^0 e^+e^-$, produced in $pp$ collisions are calculated within a covariant effective meson-nucleon theory. We argue that the $\omega$ transition form factor $F_{\omega\to \pi^0\gamma^*}$ is experimentally accessible in a fairly model independent way in the reaction $pp \to pp \pi^0 e^+ e^-$ for invariant masses of the $\pi^0 e^+ e^-$ subsystem near the $\omega$ pole. Numerical results are presented for the intermediate energy kinematics of envisaged HADES experiments.

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