An Alternative Formation Model for Antideuterons from Dark Matter

TL;DR

This paper proposes a new empirically based model for antideuteron formation from dark matter, addressing limitations of the standard model and improving predictions for dark matter detection.

Contribution

It introduces a novel formation model with a single free parameter that better fits recent collider data and impacts dark matter search strategies.

Findings

The new model fits LHC data more accurately than the standard coalescence model.

Implications for dark matter detection sensitivity are discussed.

The model simplifies antideuteron formation predictions with fewer parameters.

Abstract

Antideuterons are a potential messenger for dark matter annihilation or decay in our own galaxy, with very low backgrounds expected from astrophysical processes. The standard coalescence model of antideuteron formation, while simple to implement, is shown to be under considerable strain by recent data from the LHC. We suggest a new empirically based model, with only one free parameter, which is better able to cope with these data, and we explore the consequences of the model for dark matter searches.