The annihilation cross section for
e+e- → hadron near the
threshold
Dal'karov O.D., Ksenzov V.G.
The behavior of the annihilation cross section for eV-+hadron near the NN threshold is discussed for a coupled channel model. It is shown that a strong attraction in the AW path leads to the appearance of additional irregularities other than resonances in the energy dependence of the cross section.