1304.0927 (A. I. Ahmadov et al.)

About the creation of proton-anti-proton pair at electron-positron
collider in the energy range of the mass $Ψ(3770)$    [PDF]

A. I. Ahmadov, Yu. M. Bystritskiy, E. A. Kuraev, P. Wang

The process of electron--positron annihilation into proton--antiproton pair is considered within the vicinity of $\psi(3770)$ resonance. The interference between the pure electromagnetic intermediate state and the $\psi(3770)$ state is evaluated. It is shown that this interference is destructive and the relative phase between these two contributions is large ($\phi_0 \approx 250^o$).

View original: http://arxiv.org/abs/1304.0927