Antideuteron production in proton-proton and proton-nucleus collisions

Duperray, R.; Протасов, К. В.; Voronin, A. Yu.

doi:10.1140/epja/i2002-10074-0

Cited by 20 publications

(34 citation statements)

References 20 publications

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“…For deuterons, p 0 drops with energy until it reaches a constant value, and for antideuterons p 0 starts to grow after the production threshold and then reaches a constant value. The behavior of p 0 seems to be related with the increase in the available phase space as function of energy [10,60], however more data in this energy region is necessary to verify this dependence. In addition, it was found there is no substantial difference in the p 0 values between p+p and p+Be collisions.…”

Section: Discussionmentioning

confidence: 97%

Deuteron and antideuteron production simulation in cosmic-ray interactions

et al. 2018

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The study of the cosmic-ray deuteron and antideuteron flux receives an increasing interest in current astrophysics investigations. For both cases an important contribution is expected from the nuclear interactions of primary cosmic rays with intergalactic matter. In this work, deuteron and antideuteron production from 20 to 2.6×10 7 GeV beam energy in p+p and p+A collisions were simulated using EPOS-LHC and Geant4's FTFP-BERT Monte Carlo models by adding an event-byevent coalescence model afterburner. These estimates depend on a single parameter (p0) obtained from a fit to the data. The p0 for deuterons in this wide energy range was evaluated for the first time. It was found that p0 for antideuterons is not a constant at all energies as previous works suggested and as a consequence the antideuteron production cross section can be at least 20 times smaller in the low collision energy region, than earlier estimations.

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Section: Discussionmentioning

confidence: 97%

Deuteron and antideuteron production simulation in cosmic-ray interactions

et al. 2018

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“…This approach was then adopted for the production of both secondary and DM originated antinuclei by several groups, see e.g. [17][18][19][23][24][25][26] 1 . In this model, the criterion for coalescence of the individual nucleons is that their relative momentum is small enough to allow the formation of the bound state: this threshold momentum, called the coalescence momentum p C , is not known from first principles and has to be determined by adapting the coalescence model to antinuclei production data at accelerators, when available.…”

Section: A Cross Section and Coalescencementioning

confidence: 99%

Prospects to verify a possible dark matter hint in cosmic antiprotons with antideuterons and antihelium

Korsmeier¹,

2018

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Cosmic rays are an important tool to study dark matter annihilation in our Galaxy. Recently, a possible hint for dark matter annihilation was found in the antiproton spectrum measured by AMS-02, even though the result might be affected by theoretical uncertainties. A complementary way to test its dark matter interpretation would be the observation of low-energy antinuclei in cosmic rays. We determine the chances to observe antideuterons with GAPS and AMS-02, and the implications for the ongoing AMS-02 antihelium searches. We find that the corresponding antideuteron signal are within the GAPS and AMS-02 detection potential. If, more conservatively, the putative signal was considered as an upper limit on DM annihilation, our results would indicate the highest possible fluxes for antideuterons and antihelium compatible with current antiproton data.

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“…A microscopic approach to the coalescence model has been developed recently in [11,12], which successfully described the mass 2 and 3 antinuclei production pA →d X and pA →3 X (3 standing fort and3He ) experimental data. A microscopic approach to the coalescence model has been developed recently in [11,12], which successfully described the mass 2 and 3 antinuclei production pA →d X and pA →3 X (3 standing fort and3He ) experimental data.…”

Section: Introductionmentioning

confidence: 99%

Flux of light antimatter nuclei near Earth

Baret¹,

Barrau²,

Boudoul

et al. 2006

AIP Conference Proceedings

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The fluxes of light antinuclei A≤ 4 induced near earth by Cosmic Ray (CR) interactions with the interstellar matter (ISM) in the Galaxy are calculated in a phenomenological framework. The hadronic production cross-section for antinucleons is based on a recent parametrization of a wide set of accelerator data. The production of light nuclei is calculated using coalescence models. The non annihilating inelastic scattering process for the antideuterons is discussed and taken into account for the first time via a more realistic procedure than used so far for antiprotons.

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Antideuteron production in proton-proton and proton-nucleus collisions

Cited by 20 publications

References 20 publications

Deuteron and antideuteron production simulation in cosmic-ray interactions

Deuteron and antideuteron production simulation in cosmic-ray interactions

Prospects to verify a possible dark matter hint in cosmic antiprotons with antideuterons and antihelium

Flux of light antimatter nuclei near Earth

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