Development of the gaseous antiparticle spectrometer for space-based antimatter detection

Hailey, Charles J.; Craig, William W.; Harrison, Fiona A.; Hong, J.; Mori, Kaya; Koglin, Jason E.; Yu, Hao; Ziock, Klaus-Peter

doi:10.1016/j.nimb.2003.08.004

Cited by 32 publications

(26 citation statements)

References 12 publications

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“…The discrimination power between signal and background can be as high as few orders of magnitude. A major limit to this kind of experimental inspection may reside in the tiny level of the expected flux (about four orders of magnitude less abundant than antiprotons), which nevertheless is foreseen to become experimentally accessible in the near future [3,4,74,75]. Figure 8 displays the TOA d flux for the median propagation parameters and at solar minimum.…”

Section: Potential For Detection: Results and Discussionmentioning

confidence: 99%

“…The interest in this possible DM detection channel has been the physics case for the proposal of the GAPS experiment [2,3,4] and it has also been considered in Refs. [55,56,57].…”

Section: A Antideuteron Source Spectrummentioning

confidence: 99%

“…It was shown that the antideuteron spectra deriving from DM annihilation is expected to be much flatter than the standard astrophysical component at low kinetic energies, T d < ∼ 2-3 GeV/n. This argument motivated the proposal of a new space-borne experiment [2,3,4] looking for cosmic antimatter (antiproton and antideuteron) and having the potential to discriminate between standard and exotic components for a wide range of DM models. AMS-02 has also interesting capabilities of looking for cosmic antideuterons [5].…”

Section: Introductionmentioning

confidence: 99%

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Antideuteron fluxes from dark matter annihilation in diffusion models

2008

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Antideuterons are among the most promising galactic cosmic ray-related targets for dark matter indirect detection. Currently only upper limits exist on the flux, but the development of new experiments, such as GAPS and AMS-02, provides exciting perspectives for a positive measurement in the near future. In this Paper, we present a novel and updated calculation of both the secondary and primary d fluxes. We employ a two-zone diffusion model which successfully reproduces cosmic-ray nuclear data and the observed antiproton flux. We review the nuclear and astrophysical uncertainties and provide an up to date secondary (i.e. background) antideuteron flux. The primary (i.e. signal) contribution is calculated for generic WIMPs annihilating in the galactic halo: we explicitly consider and quantify the various sources of uncertainty in the theoretical evaluations. Propagation uncertainties, as is the case of antiprotons, are sizeable. Nevertheless, antideuterons offer an exciting target for indirect dark matter detection for low and intermediate mass WIMP dark matter. We then show the reaching capabilities of the future experiments for neutralino dark matter in a variety of supersymmetric models.

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Section: Potential For Detection: Results and Discussionmentioning

confidence: 99%

“…The interest in this possible DM detection channel has been the physics case for the proposal of the GAPS experiment [2,3,4] and it has also been considered in Refs. [55,56,57].…”

Section: A Antideuteron Source Spectrummentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Antideuteron fluxes from dark matter annihilation in diffusion models

2008

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“…3 Most notably the Gaps experiment [38][39][40][41] is aimed at the search of anti-deuterons with a dedicated technique which consists in slowing down the anti-deuteron entering the apparatus and then detecting the pion and X ray signatures of its annihilation on the nuclei in the matter of the detector itself. It is possible that such an analysis can be adapted to other anti-nuclei for the Gaps set-up currently under development, with dedicated studies (Tsuguo Aramaki, private communication).…”

Section: Jhep08(2014)009mentioning

confidence: 99%

Anti-helium from dark matter annihilations

Cirelli

Fornengo

Taoso

et al. 2014

J. High Energ. Phys.

112

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Galactic Dark Matter (DM) annihilations can produce cosmic-ray anti-nuclei via the nuclear coalescence of the anti-protons and anti-neutrons originated directly from the annihilation process. Since anti-deuterons have been shown to offer a distinctive DM signal, with potentially good prospects for detection in large portions of the DM-particle parameter space, we explore here the production of heavier anti-nuclei, specifically antihelium. Even more than for anti-deuterons, the DM-produced anti-He flux can be mostly prominent over the astrophysical anti-He background at low kinetic energies, typically below 3-5 GeV/n. However, the larger number of anti-nucleons involved in the formation process makes the anti-He flux extremely small. We therefore explore, for a few DM benchmark cases, whether the yield is sufficient to allow for anti-He detection in currentgeneration experiments, such as Ams-02. We account for the uncertainties due to the propagation in the Galaxy and to the uncertain details of the coalescence process, and we consider the constraints already imposed by anti-proton searches. We find that only for very optimistic configurations might it be possible to achieve detection with current generation detectors. We estimate that, in more realistic configurations, an increase in experimental sensitivity at low kinetic energies of about a factor of 500-1000 would allow to start probing DM through the rare cosmic anti-He production.

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“…To identify cosmic-ray antiparticles, GAPS introduces an original method that utilizes the deexcitation sequence of exotic atoms [15,16]. When an antiparticle (antiproton or antideuteron) arrives from space, it is slowed down by the dE/dx energy losses in the residual atmosphere, in the GAPS time-of-flight (TOF) counters, and in the target material.…”

Section: Detection Methods Using Exotic Atommentioning

confidence: 99%

Present Status and Future Plans of GAPS Antiproton and Antideuteron Measurement for Indirect Dark Matter Search

Fuke¹,

Doetinchem²,

Hailey³

et al. 2017

Proceedings of the 12th International Conference on Low Energy Antiproton Physics (LEAP2016)

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The General Anti-Particle Spectrometer (GAPS) experiment aims to measure cosmic-ray antiparticles with unprecedented sensitivity in the low-energy range around 100 MeV. The low-energy cosmic-ray antiprotons and antideuterons are expected to be unique probes in indirect searches for dark matter candidates e.g. supersymmetric neutralinos. In order to achieve high sensitivity, GAPS introduces a novel antiparticle-identification method using exotic atom physics. GAPS plans to realize its first physics run by long-duration balloon flight over Antarctica around 2020. In this paper, the present status and future plans for GAPS are discussed.

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Development of the gaseous antiparticle spectrometer for space-based antimatter detection

Cited by 32 publications

References 12 publications

Antideuteron fluxes from dark matter annihilation in diffusion models

Antideuteron fluxes from dark matter annihilation in diffusion models

Anti-helium from dark matter annihilations

Present Status and Future Plans of GAPS Antiproton and Antideuteron Measurement for Indirect Dark Matter Search

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