Production and propagation of secondary antideuteron in the Galaxy

TL;DR

This paper reviews antideuteron production cross-sections in cosmic ray interactions, updates propagation models with recent data, and estimates the expected flux at Earth to aid dark matter searches.

Contribution

It provides a comprehensive review of production cross-sections, incorporates them into advanced propagation simulations, and offers flux predictions with uncertainty analysis.

Findings

Updated antideuteron flux estimates at Earth

Quantified uncertainties in production cross-sections

Enhanced cosmic ray propagation modeling

Abstract

This work reviews the current state of the antideuteron ($\bar{d}$) production cross-sections in cosmic ray interactions and its uncertainties, considering the coalescence model and measurements in accelerator experiments. These cross-sections have been included in a simulation of cosmic rays propagation in the Galaxy using GALPROP v.57, with updated parameters of the diffusive reacceleration model. An estimation of the expected antideuteron flux at Earth is presented.