Flux of light antimatter nuclei near Earth, induced by cosmic rays in the Galaxy and in the atmosphere

Duperray, R.; Baret, B.; Maurin, D.; Boudoul, G.; Barrau, A.; Derome, L.; Протасов, К. В.; Buénerd, M.

doi:10.1103/physrevd.71.083013

Cited by 107 publications

(245 citation statements)

References 96 publications

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“…Evidently the secondary production of heavier nuclei should be much weaker. As estimated in the same paper [60], the flux of the secondary produced antihelium-3 and antihelium-4 should be smaller by 4 and 8 orders of magnitude respectively. So a registration even a single anti-helium nucleus would be a strong indication on existence of primordial antimatter.…”

Section: Cosmological Antimattermentioning

confidence: 99%

See 1 more Smart Citation

Three P’s in Cosmology: Progress, Problems, and Perspectives

Dolgov

2014

EPJ Web of Conferences

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Abstract. A review on the development of cosmology for a diverse audience is presented. The first historical part is devoted to the works done half a century ago with an emphasize to those performed in Russia (or more precisely, in the Soviet Union). Then the recent data on the cosmic microwave background raditation is discussed and the impact of these data on the neutrino mass and the number of neutrino species is considered. The latter is compared with the results obtained from the big bang nucleosynthesis. Next, a short description and history of the cosmological inflation is presented. The basics of the standard cosmological model and the problems of dark matter and dark energy are considered at the end of the fist section entitled "Progress". In the next short section, "Problems", one can find a list of the unsolved cosmological and astrophysical problems, which is by no means fully comprehensive. The last supershort section contains a few words about the perspectives of future development.

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Section: Cosmological Antimattermentioning

confidence: 99%

“…According to the estimates of ref. [60] the flux of antideuterium, created by this sequence of reactions, would be at the level 10 −7 /m 2 /s/GeV/str. This flux is nine orders of magnitude below the observed flux of 4 He.…”

Section: Cosmological Antimattermentioning

confidence: 99%

Three P’s in Cosmology: Progress, Problems, and Perspectives

Dolgov

2014

EPJ Web of Conferences

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“…The relatively flat peak is located at E ∼ 0.2 GeV/n. The antideuteron flux due to the cosmic-ray interactions with the interstellar medium (secondary/tertiary flux, red dashed line) is also shown in Figure 1 [12,13,14]. Unlike primary antideuterons, collision kinematics suppress the formation of low-energy secondary antideuterons.…”

Section: Antideuterons For Dark Matter Searchmentioning

confidence: 99%

“…The blue dashed line (LZP), black dotted line (LSP), and green dot-dashed line (LKP) represent the primary antideuteron fluxes due to the dark matter annihilations [11]. The red solid line represents the secondary/tertiary flux due to the cosmic-ray interactions [12,13,14].…”

Section: Antideuterons For Dark Matter Searchmentioning

confidence: 99%

A measurement of atomic X-ray yields in exotic atoms and implications for an antideuteron-based dark matter search

Aramaki

Chan

Craig

et al. 2013

Astroparticle Physics

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The General AntiParticle Spectrometer (GAPS) is a novel approach for the indirect dark matter search that exploits cosmic antideuterons. GAPS utilizes a distinctive detection method using atomic X-rays and charged particles from the exotic atom as well as the timing, stopping range and dE/dX energy deposit of the incoming particle, which provides excellent antideuteron identification. In anticipation of a future balloon experiment, an accelerator test was conducted in 2004 and 2005 at KEK, Japan, in order to prove the concept and to precisely measure the X-ray yields of antiprotonic exotic atoms formed with different target materials [1]. The X-ray yields of the exotic atoms with Al and S targets were obtained as ∼ 75%, which are higher than were previously assumed in [2]. A simple, but comprehensive cascade model has been developed not only to evaluate the measurement results but also to predict the X-ray yields of the exotic atoms formed with any materials in the GAPS instrument. The cascade model is extendable to any kind of exotic atom (any negatively charged cascading particles with any target materials), and it was compared and validated with other experimental data and cascade models for muonic and antiprotonic exotic atoms. The X-ray yields of the antideuteronic exotic atoms are predicted with a simple cascade model and the sensitivity for the GAPS antideuteron search was estimated for the proposed long duration balloon program [3], which suggests that GAPS has a strong potential to detect antideuterons as a dark matter signature. A GAPS prototype flight (pGAPS) was launched successfully from the JAXA/ISAS balloon facility in Hokkaido, Japan in summer 2012 [4,5] and a proposed GAPS science flight is to fly from Antarctica in the austral summer of 2017-2018.

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“…The primary goal of GAPS is to search for undiscovered antideuterons in the low-energy (sub-GeV) range with unprecedented sensitivity. Various DM models theoretically predict enhanced antideuteron flux in the sub-GeV region which is two or three orders of magnitude higher than the antideuteron flux originating from the secondary interactions of 1 cosmic rays [3,4]. Therefore, the detection of even a single sub-GeV antideuteron can be indirect evidence of the existence of novel origin.…”

Section: Introductionmentioning

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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Flux of light antimatter nuclei near Earth, induced by cosmic rays in the Galaxy and in the atmosphere

Cited by 107 publications

References 96 publications

Three P’s in Cosmology: Progress, Problems, and Perspectives

Three P’s in Cosmology: Progress, Problems, and Perspectives

A measurement of atomic X-ray yields in exotic atoms and implications for an antideuteron-based dark matter search

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

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