P. A. Khakhulin | Searcharxiv

arXiv2009

On the electromagnetic form factors of hadrons in the time-like region near threshold

Hadron electromagnetic form factor in the time-like region at the boundary of the physical region is considered. The energy behavior of the form factor is shown to be determined by the strong hadron-antihadron interaction. Imaginary parts of the scattering lengths for $p\bar{p}$, $Λ\barΛ$, $Λ\barΣ^0 (\barΛΣ^0)$ and $Σ^0\barΣ^0$ are estimated. Developed approach enables us to estimate imaginary part of the scattering volume from $D^*\bar{D^*}$ experimental data. The form factor energy behavior away from the threshold is obtained within a semiphenomenological model of hadron-antihadron interaction.

nucl-th↗

arXiv2008

Electromagnetic form factors of hadrons in the time-like region

Hadron electromagnetic form factors of hadrons in the time-like region at the boundary of the physical region is considered. The energy behaviour of the form factor is shown to be dominantely determined by the strong hadron-antihadron interaction. The scattering length imaginary part for $p-\bar{p}$, $Λ-\barΛ$, $Σ^0-\bar{Σ^0}$ are evaluated. We propose experiments to extract the information on the nearthreshold baryon-antibaryon interaction by using of hadron form foctors.

hep-ph↗