Response to Comment on "Dark Matter Annihilation Can Produce a Detectable Antihelium Flux through $\bar{\Lambda}_b$ Decays"

TL;DR

This paper defends the original claim that dark matter annihilation can produce detectable antihelium flux via $ar{ ext{Lambda}}_b$ decays, emphasizing the robustness of their Monte Carlo predictions against critiques.

Contribution

The authors clarify that their previous antihelium flux predictions remain valid despite critiques, reaffirming the significance of $ar{ ext{Lambda}}_b$ decay channels in dark matter studies.

Findings

Original antihelium flux predictions are upheld.

Critiques by Kachelriess et al. are shown to be incorrect or irrelevant.

Monte Carlo models remain reliable for antihelium formation estimates.

Abstract

In a recent paper we showed that the decay of intermediate $\bar{\Lambda}_b$ baryons can dramatically enhance the antihelium flux from dark matter annihilation. Our antihelium predictions were derived using several implementations of the Pythia and Herwig event generators which were calibrated to existing data on antideuteron and antihelium formation. Kachelriess et al. have argued for a smaller antihelium flux compared to our most optimistic Monte Carlo model. However, we show that the arguments by Kachelriess et al. are either incorrect or irrelevant for antihelium formation. Thus, the results of our original paper remain unchanged.