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Reevaluation of the cosmic antideuteron flux from cosmic-ray interactions and from exotic sources

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arxiv 2201.00925 v2 pith:ZIFM4PHU submitted 2022-01-04 astro-ph.HE

Laura Šerkšnytė , Stephan Königstorfer , Philip von Doetinchem , Laura Fabbietti , Diego Mauricio Gomez-Coral , Johannes Herms , Alejandro Ibarra , Thomas Pöschl
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Anirvan Shukla Andrew Strong Ivan Vorobyev
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classification astro-ph.HE
keywords antideuteroncosmic-rayexoticpropagationantideuteronsfluxfluxesgalaxy
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Cosmic-ray antideuterons could be a key for the discovery of exotic phenomena in our Galaxy, such as dark-matter annihilations or primordial black hole evaporation. Unfortunately the theoretical predictions of the antideuteron flux at Earth are plagued with uncertainties from the mechanism of antideuteron production and propagation in the Galaxy. We present the most up-to-date calculation of the antideuteron fluxes from cosmic-ray collisions with the interstellar medium and from exotic processes. We include for the first time the antideuteron inelastic interaction cross section recently measured by the ALICE collaboration to account for the loss of antideuterons during propagation. In order to bracket the uncertainty in the expected fluxes, we consider several state-of-the-art models of antideuteron production and of cosmic-ray propagation.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Quantum interference effects enhanced in $\pi^+p$ femtoscopic correlation functions

    hep-ph 2026-07 conditional novelty 7.0 of 10

    The π⁺p correlation peak near 140 MeV/c arises from quantum interference of incident and scattered waves, while the Δ decay peaks near 220 MeV/c; their m_T-dependent mix explains the ALICE peak shift.

  2. Light Antinuclei Coalescence: Femtoscopic Constraints via Neural-Flow Surrogates

    astro-ph.HE 2026-07 conditional novelty 6.0 of 10

    A neural-flow emulator of the CECA femtoscopic source, fit to 49 ALICE pp correlation functions, reduces claimed uncertainties on antinuclei coalescence parameters B2 and B3 to a few percent and ~10% respectively.

  3. Toward universal coalescence models for antideuteron production

    hep-ph 2026-03 conditional novelty 5.0 of 10

    Event-by-event coalescence models with a shared scale p_coal ≃ 0.2 GeV (or δ ≃ 1.7 fm) simultaneously fit ALICE pp (anti)deuteron spectra and ALEPH Z-decay antideuteron yields.

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