# Proton distributions in $dp$ dielectron production within Regge theory

## TL;DR

This paper models dielectron production in deuteron-proton collisions using Regge theory, successfully explaining experimental data by considering multiple interaction channels at intermediate energies.

## Contribution

It introduces a reggeized one-pion exchange approach within the spectator model to analyze dielectron production in $dp$ collisions, incorporating multiple channels for better data agreement.

## Key findings

- The model describes HADES data satisfactorily at 2.5 GeV.
- Inclusion of multiple channels improves the description of quasi-free $NN$ interactions.
- Proton momentum and angle distributions are effectively modeled.

## Abstract

The processes of dielectron production in deuteron-proton collisions at intermediate incident deuteron beam energies are analyzed in the spectator model within the one-pion exchange reggeized approach. We focus mainly on the momentum and angle distributions of the proton-spectator and the proton emitted in quasi-free $NN$ processes at small angles in the laboratory frame. It is shown that the inclusion of many channels in quasi-free $NN$ interaction allows us to describe the HADES data quite satisfactorily at incident deuteron kinetic energies of about 2.5 GeV.