New vector state near the
threshold
Dal'karov O. D., Protasov K. V.
The coupled-channel model is used to describe experimental data which confirm the earlier prediction that a minimum could appear on the cross section for multipion e+e~ annihilation near the NN threshold. Analysis of an irregularity which is observed points to the existence of a narrow vector state which corresponds to the 2335, state in a system with a mass of about 1800 MeV and a width on the order of 15 MeV.