@Article{Jueid_etal2024,
author="Jueid, A.
and Kip, J.
and Ruiz de Austri, R.
and Skands, P.",
title="The Strong Force meets the Dark Sector: a robust estimate of QCD uncertainties for anti-matter dark matter searches",
journal="Journal of High Energy Physics",
year="2024",
publisher="Springer",
volume="02",
number="2",
pages="119--48pp",
optkeywords="Cosmic Rays; Particle Nature of Dark Matter; Specific QCD Phenomenology",
abstract="In dark-matter annihilation channels to hadronic final states, stable particles -- such as positrons, photons, antiprotons, and antineutrinos -- are produced via complex sequences of phenomena including QED/QCD radiation, hadronisation, and hadron decays. These processes are normally modelled by Monte Carlo (MC) event generators whose limited accuracy imply intrinsic QCD uncertainties on the predictions for indirect-detection experiments like Fermi-LAT, Pamela, IceCube or Ams-02. In this article, we perform a comprehensive analysis of QCD uncertainties, meaning both perturbative and nonperturbative sources of uncertainty are included -- estimated via variations of MC renormalization-scale and fragmentation-function parameters, respectively -- in antimatter spectra from dark-matter annihilation, based on parametric variations of the Pythia 8 event generator. After performing several retunings of light-quark fragmentation functions, we define a set of variations that span a conservative estimate of the QCD uncertainties. We estimate the effects on antimatter spectra for various annihilation channels and final-state particle species, and discuss their impact on fitted values for the dark-matter mass and thermally-averaged annihilation cross section. We find dramatic impacts which can go up to O(10{\%}) for the annihilation cross section. We provide the spectra in tabulated form including QCD uncertainties and code snippets to perform fast dark-matter fits, in this github repository.",
optnote="WOS:001165531600003",
optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=5956), last updated on Mon, 04 Mar 2024 07:48:15 +0000",
issn="1029-8479",
doi="10.1007/JHEP02(2024)119",
opturl="https://arxiv.org/abs/2303.11363",
opturl="https://doi.org/10.1007/JHEP02(2024)119",
language="English"
}