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Author  |
Di Mauro, M.; Jueid, A.; Koechler, J.; Ruiz de Austri, R. |
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Title |
Robust determination of antinuclei production from dark matter via weakly decaying beauty hadrons |
Type |
Journal Article |
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Year |
2025 |
Publication |
Physical Review D |
Abbreviated Journal |
Phys. Rev. D |
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Volume |
112 |
Issue |
8 |
Pages |
083017 - 10pp |
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Abstract |
Recently, the Alpha Magnetic Spectrometer (AMS-02) Collaboration presented tentative evidence for the detection of cosmic antihelion-3 (3He) events, alongside a comparable number of antideuterons (D<overline>). If confirmed, these observations could revolutionize our understanding of cosmic-ray production and propagation and/or serve as compelling indirect evidence for dark matter. Given that the detection of cosmic D<overline> is already at the limit of AMS-02 sensitivity, explaining the observation of 3He even within the standard coalescence framework poses a significant challenge. It has recently been shown that a previously overlooked mechanism within the Standard Model of particle physics-namely, the production of antihelion via the displaced-vertex decay of from dark matter-induced processes. In light of these challenges, we present a tuning of Pythia that is consistent with LEP data on the fragmentation function of b quarks into b hadrons-a critical factor for determining the Lambda<overline>0b multiplicity-and with ALICE and ALEPH data for the D<overline> and 3He spectra, which we employ to determine our coalescence model. Our refined Pythia tuning, in conjunction with our coalescence Lambda<overline>0b baryons-could substantially enhance the 3He flux arising model, results in a predicted branching ratio for the production of 3He from Lambda<overline>0b decays that is consistent with the recent upper limit measured by LHCb. Furthermore, our prediction indicates that the contribution of D<overline> and 3He from beauty-hadron decays is negligible relative to the direct production from hadronization. |
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Address |
[Di Mauro, Mattia; Koechler, Jordan] Ist Nazl Fis Nucleare, Sez Torino, Via Pietro Giuria 1, I-10125 Turin, Italy, Email: dimauro.mattia@gmail.com; |
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Publisher |
Amer Physical Soc |
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Language |
English |
Summary Language |
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Original Title |
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Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
2470-0010 |
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Notes |
WOS:001597060500005 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
6904 |
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