Description of the reaction pp→ppπ+π- in the reggezied OPE model

Using the pp→ppπ+π- reaction as an example, a model of the reggezied one-pion exchange (OPER) is formulated. The model depends on three parameters. The energy dependence of the examined reaction from 2 to 205 GeV/s, the distribution over the masses of particle pairs pπ+, pπ-, π+π- and the distribution over the mass of three particles Msub(pπ+π-) are quantitatively described. A quantitative description of the effect of the diffraction maximum appearing in the region of approximately 1.7 GeV is made. The distributions over squares of transferred momenta.are analyzed. A numerical analysis of form factors is carried out. It is shown that at low energies the form factors increase with transferred momentum. By analyzing the properties of the pp→ppπ+π- reaction a satisfactory quantitative agreement is found between theoretical and experimental daca