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CosmicAntiNuclei

Constraining cosmic antinuclei fluxes for indirect dark matter searches with precision measurements of rare antimatter cluster formation

Grant period2021-07-01 - 2026-06-30
Funding bodyEuropean Union
Call numberERC-2020-STG
Grant number950692
IdentifierG:(EU-Grant)950692

Note: Visible matter constitutes only 5% of the matter-energy content of the Universe, whereas the remaining 95% is constituted by unknown forms of matter (20%) and energy (75%) that appear as ``dark'' to us. In the landscape of Dark Matter searches, antinuclei are a promising, almost background-free smoking gun signal for WIMPs and are a target of indirect dark matter searches. This project attacks in a systematic and comprehensive way the modelling of light antimatter cluster formation, necessary to predict the expected signal and background rates for dark matter antinuclei searches in space-borne experiments. The programme is based on precision measurements of rare antihelium production in proton-proton, proton-nucleus and nucleus-nucleus collisions with the ALICE detector at the CERN LHC. An innovative approach based on the measurement of two-particle correlations will be applied for the first time to investigate experimentally antinuclei formation via coalescence in relation to the nucleus wavefunction and interaction potential. The results of the analysis of the ALICE data will be input for the modelling of antinuclei formation and propagation in the Galaxy. The final goal of the project is to obtain a prediction for the expected cosmic ray antihelium background rate for AMS-02, further enhancing the scientific value of the proposed research programme. The outcome of this project will shed light on the production mechanisms of light nuclei and antinuclei in high-energy interactions. In addition, it will extend the ALICE and LHC physics programme to the astrophysical domain, with a deep innovative impact in a well-established field of research. It will have direct fundamental applications to indirect dark matter searches with existing (AMS-02) and future (GAPS, AMS-100) experiments, providing relevant input to frontier research in this sector.
   

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System-size dependence of the hadronic rescattering effect at energies available at the CERN Large Hadron Collider
Physical review / C 109(1), 014911 () [10.1103/PhysRevC.109.014911] OpenAccess  Download fulltext Files  Download fulltextFulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

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Measurement of (anti)alpha production in central Pb–Pb collisions at $\sqrt{^{s}NN}=5.02 TeV$
Physics letters / B 858, 138943 () [10.1016/j.physletb.2024.138943] OpenAccess  Download fulltext Files  Download fulltextFulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

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Measurement of the fraction of jet longitudinal momentum carried by $\Lambda_{\rm c}^+$ baryons in pp collisions
Physical review / D 109(7), 072005 () [10.1103/PhysRevD.109.072005] OpenAccess  Download fulltext Files  Download fulltextFulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

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Emergence of Long-Range Angular Correlations in Low-Multiplicity Proton-Proton Collisions
Physical review letters 132(17), 172302 () [10.1103/PhysRevLett.132.172302] OpenAccess  Download fulltext Files  Download fulltextFulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

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Photoproduction of K$^{+}$K$^{-}$ Pairs in Ultraperipheral Collisions
Physical review letters 132(22), 222303 () [10.1103/PhysRevLett.132.222303] OpenAccess  Download fulltext Files  Download fulltextFulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

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Measurements of long-range two-particle correlation over a wide pseudorapidity range in p$-$Pb collisions at $\sqrt{s_{\rm NN}}=5.0$ TeV
Journal of high energy physics 01(1), 199 () [10.1007/JHEP01(2024)199] OpenAccess  Download fulltext Files  Download fulltextFulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

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ALICE upgrades during the LHC Long Shutdown 2
Journal of Instrumentation 19(05), P05062 () [10.1088/1748-0221/19/05/P05062] OpenAccess  Download fulltext Files  Download fulltextFulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

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Multiplicity and event-scale dependent flow and jet fragmentation in pp collisions at $ \sqrt{s} $ = 13 TeV and in p–Pb collisions at $ \sqrt{s_{\textrm{NN}}} $ = 5.02 TeV
Journal of high energy physics 03(3), 92 () [10.1007/JHEP03(2024)092] OpenAccess  Download fulltext Files  Download fulltextFulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

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Studying strangeness and baryon production mechanisms through angular correlations between charged Ξ baryons and identified hadrons in pp collisions at $ \sqrt{s} $ = 13 TeV
Journal of high energy physics 09(9), 102 () [10.1007/JHEP09(2024)102] OpenAccess  Download fulltext Files  Download fulltextFulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

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Azimuthal anisotropy of jet particles in p-Pb and Pb-Pb collisions at $ \sqrt{{\textrm{s}}_{\textrm{NN}}} $ = 5.02 TeV
Journal of high energy physics 08(8), 234 () [10.1007/JHEP08(2024)234] OpenAccess  Download fulltext Files  Download fulltextFulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

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 Record created 2021-10-10, last modified 2023-02-14
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