A versatile method for simulating pp -> ppe+e- and dp -> pne+e-p_spec reactions

TL;DR

This paper introduces a flexible software tool for simulating di-electron production in proton-proton and deuteron-proton collisions, aiding experimental analysis and future experiment design.

Contribution

A new versatile simulation package that models various di-electron production processes with a unified interface, enhancing analysis capabilities for SIS energy collisions.

Findings

Incorporates multiple decay models for $\Delta o N e^+e^-$.

Implements parameterizations for $NN o NN e^+e^-$ bremsstrahlung.

Facilitates interpretation of HADES data and experiment planning.

Abstract

We have developed a versatile software package for the simulation of di-electron production in $pp$ and $dp$ collisions at SIS energies. Particular attention has been paid to incorporate different descriptions of the Dalitz decay $\Delta \to N e^+e^-$ via a common interface. In addition, suitable parameterizations for the virtual bremsstrahlung process $NN \to NN e^+e^-$ based on one-boson exchange models have been implemented. Such simulation tools with high flexibility of the framework are important for the interpretation of the di-electron data taken with the HADES spectrometer and the design of forthcoming experiments.