Year: 2025
Type: conference-paper
Abstract: Antinuclei detection by space-borne experiments close to Earth has been identified as a smoking gun for dark matter signals. Recently, theoretical efforts were attempted to introduce new channels for antinuclei production from $\overline{\Lambda_b}$ decays. This decay channel was never observed and requires experimental evidence, to which the Large Hadron Collider offers the ideal environment. We present a prediction of the $\overline{\Lambda_b}\longrightarrow \overline{\rm{d}} + \rm{X}$ branching ratio ($\overline{\Lambda_b}$ to antideuterons). Proton-proton collisions at $\sqrt{s} = 13.6\; \rm{TeV}$ are simulated using PYTHIA, from which the production of $\overline{\Lambda_b}$ is obtained. State-of-the-art coalescence models are then applied to the antinucleons available in the final state to produce antideuterons. A first estimate of the branching ratio of the process is obtained, evaluating the feasibility of measuring this new channel at the LHC.
DOI: 10.22323/1.501.0520
Authors: Marta Razza, Francesca Bellini, Nicolò Jacazio
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W4414478440
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