Di-pion production in np-interactions at intermediate energies

Abstract

The reactions np → npπ + π − , np → ppπ − π 0 and np → dπ + π − were studied at the various momenta of incident neutrons. It was shown that the characteristics of the reactions at the momenta above 3 GeV/c could be described by the model of reggeized π exchange (OPER). At the momenta below 3 GeV/c, it was necessary to use additionally the mechanismof one baryon exchange (OBE).

Study of multipion production in np-interaction at intermediate energies

“…We have also got a good description of the characteristics of the reaction np → ppπ − π 0 using the diagrams similar to the diagrams for the reaction np → npπ + π − . The details of this study were presented in [9].…”

“…Also a good description was obtained for this reaction at the incident momenta P 0 =3.83 and 4.42 GeV/c. The details of the study of this reaction were presented in [9].…”

Proton distributions in dp dielectron production within Regge theory

“…For analysis of the exclusive production of one or two pions in NN or πN interactions the one-pion exchange reggeized (OPER) model was suggested [2]. For example, recently the OPER was successfully applied [3,4] to describe the experimental data on two-pion production in np collisions at incident kinetic energies E kin of about 1-5 GeV [3,5,6,7] and the HADES data at E kin = 1.25 GeV [4]. One of the most interesting goals in the HADES program is the study of e + e − -pair production in np interactions.…”