Expectations of the Cosmic Antideuteron Flux

Lin, Su-Jie; Bi, Xiao-Jun; Yin, Peng-Fei

doi:10.48550/arxiv.1801.00997

Cited by 8 publications

(10 citation statements)

References 58 publications

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“…In recent years there has been a growing interest in searches for cosmic-ray antiparticles with space-based and balloon-borne experiments, like BESS, PAMELA, and AMS-02 [1][2][3][4][5][6][7]. One of the motivations is that rare antiparticles act as messengers for exotic processes in the Galaxy, such as dark-matter annihilation or decay [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22], which have a very low astrophysical background at kinetic energies below few GeV/nucleon. This background is generated by interactions of primary cosmic rays, like protons or α-particles, with the interstellar medium (ISM).…”

Section: Introductionmentioning

confidence: 99%

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

Šerkšnytė,

Königstorfer,

von Doetinchem

et al. 2022

Preprint

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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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Section: Introductionmentioning

confidence: 99%

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

Šerkšnytė,

Königstorfer,

von Doetinchem

et al. 2022

Preprint

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“…It has been noticed that in a given DM model, the predicted fluxes of antiproton and antideuteron should be correlated. Thus the constraints from the antiproton data can be used to set limits on the maximal fluxes of antideuteron [26][27][28]. The same strategy can be applied to the case of CR antihelium production, which was briefly discussed in [29] based on a fixed DM profile and CR propagation model and the value of coalescence momentum p 0 in the coalescence model for antinucleon formation inferred from rescaling the value for antideuteron.…”

Section: Introductionmentioning

confidence: 99%

Prospects of detecting dark matter through cosmic-ray antihelium with the antiproton constraints

Ding

Wei

et al. 2019

J. Cosmol. Astropart. Phys.

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Cosmic-ray (CR) antihelium is an important observable for dark matter (DM) indirect searches due to extremely low secondary backgrounds towards low energies. In a given DM model, the predicted CR antihelium flux is expected to be strongly correlated with that of CR antiprotons.In this work, we use the AMS-02p/p data to constrain the DM annihilation cross section, and the ALICE data on the 3 He and T productions to determine the parameters in the coalescence model for anti-nucleus formation. The hadronic cross sections are estimated using Monte-Carlo event generators including EPOS-LHC and DPMJET. Based on these constraints, we make predictions for the maximal antihelium flux for typical DM annihilation final states, and perform a detailed analysis on the uncertainties due to the DM density profiles and CR propagation models. We find that the results are highly insensitive to both of them, but still significantly depend on the hadronization models in event generators. The prospects of detecting antihelium for the AMS-02 experiment is discussed. We show that with very optimistic assumptions, CR 3 He is within the reach of the AMS-02 experiment. The 3 He events which can be detected by AMS-02 are likely to have kinetic energy T 30 GeV, which is consistent with the preliminary AMS-02 search results. The events which can be observed by AMS-02 are likely to arise dominantly from secondary backgrounds rather than DM interactions. * dingyucheng@itp.ac.cn

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“…The solid black curve shows the antideuteron flux expected from secondary production by charged cosmic rays interacting with the interstellar material, as derived in Ref. [106] for the EPOS LHC interaction model. Data for the other Z = −1 particles in cosmic rays, from AMS-02 [8,107] and BESS-Polar [97], are shown to indicate the signal to background ratios for the antideuteron measurement.…”

Section: Antideuteronsmentioning

confidence: 97%

“…with statistical uncertainties (which are smaller than the symbol size). The solid black curve shows the antideuteron flux expected from secondary production by charged cosmic rays interacting with the interstellar material, as derived in Ref [106]. for the EPOS LHC interaction model.…”

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confidence: 96%

AMS-100: The next generation magnetic spectrometer in space – An international science platform for physics and astrophysics at Lagrange point 2

Schael

Atanasyan

Berdugo

et al. 2019

Nuclear Instruments and Methods in Physics Research Section A:

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The next generation magnetic spectrometer in space, AMS-100, is designed to have a geometrical acceptance of 100 m 2 sr and to be operated for at least ten years at the Sun-Earth Lagrange Point 2. Compared to existing experiments, it will improve the sensitivity for the observation of new phenomena in cosmic rays, and in particular in cosmic antimatter, by at least a factor of 1000. The magnet design is based on high temperature superconductor tapes, which allow the construction of a thin solenoid with a homogeneous magnetic field of 1 Tesla inside. The inner volume is instrumented with a silicon tracker reaching a maximum detectable rigidity of 100 TV and a calorimeter system that is 70 radiation lengths deep, equivalent to four nuclear interaction lengths, which extends the energy reach for cosmic-ray nuclei up to the PeV scale, i.e. beyond the cosmic-ray knee. Covering most of the sky continuously, AMS-100 will detect high-energy gamma rays in the calorimeter system and by pair conversion in the thin solenoid, reconstructed with excellent angular resolution in the silicon tracker.

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Expectations of the Cosmic Antideuteron Flux

Cited by 8 publications

References 58 publications

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

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

Prospects of detecting dark matter through cosmic-ray antihelium with the antiproton constraints

AMS-100: The next generation magnetic spectrometer in space – An international science platform for physics and astrophysics at Lagrange point 2

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