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Can AMS-02 discriminate the origin of an anti-proton signal?
High Energy Physics - Phenomenology · Submitted 20 Jun 2014
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim We investigate the two signals from different dark models and different supernova remnant parameters, as forecasted for the AMS-02, and show that they present a significant degeneracy.
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The abstract, sentence by sentence
Indirect searches can be used to test dark matter models against expected signals in various channels, in particular antiprotons. With antiproton data available soon at higher and higher energies, it is important to test the dark matter hypothesis against alternative astrophysical sources, e.g. secondaries accelerated in supernova remnants. We investigate the two signals from different dark models and different supernova remnant parameters, as forecasted for the AMS-02, and show that they present a significant degeneracy.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | Indirect searches can be used to test dark matter models against expected signals in various channels, in particular antiprotons. | background 1.00 | 0.05 | 0.03 | hedged possibility 0.58 |
| s1 | With antiproton data available soon at higher and higher energies, it is important to test the dark matter hypothesis against alternative astrophysical sources, e.g. secondaries accelerated in supernova remnants. | background 0.93 | 0.05 | 0.04 | asserted 0.88 |
| s2 | We investigate the two signals from different dark models and different supernova remnant parameters, as forecasted for the AMS-02, and show that they present a significant degeneracy. | result 0.76 | 0.91 | 0.89 | asserted 1.00 |
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The paper
Original abstract
Indirect searches can be used to test dark matter models against expected signals in various channels, in particular antiprotons. With antiproton data available soon at higher and higher energies, it is important to test the dark matter hypothesis against alternative astrophysical sources, e.g. secondaries accelerated in supernova remnants. We investigate the two signals from different dark models and different supernova remnant parameters, as forecasted for the AMS-02, and show that they present a significant degeneracy.
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References
How the literature uses it
11 arXiv papers cite this in 14 sentences
Papers citing it · 9 sentences without a confident label
Cites it as background 4 papers
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Indirect detection with antiprotons is an important search strategy to test the dark matter (DM) self-annihilating nature predicted by thermal freeze-out scenarios [ref] .
Constraining heavy dark matter with cosmic-ray antiprotons · Introduction · 0.80
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Cosmic-ray (CR) antiprotons are a powerful tool to investigate the particle nature of dark matter (DM), see, for example, [ref] .
Novel dark matter constraints from antiprotons in the light of AMS-02 · Introduction · 0.97
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Beside secondary production by CR proton and helium interactions with the ISM, annihilation of DM in the Galaxy may lead to an additional source of antiprotons from the fragmentation and decay of the annihilation products [ref] .
Scrutinizing the evidence for dark matter in cosmic-ray antiprotons · Cosmic-ray propagation and solar modulation · 0.86
What it cites · 42 sentences without a confident label
Uses the method or tool of 5 papers
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In particular, Ref. [ref] derived the analytical prescription for the ratio $p̅/p$ that we will use for our analysis.
High-energy antiprotons from old supernova remnants · Antiprotons accelerated in supernova remnants · 0.82
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We have computed the antiproton flux at Earth using DRAGON [ref] for various models of annihilating DM, as summarized in Table [ref] and including electroweak corrections [ref] .
Weak Corrections are Relevant for Dark Matter Indirect Detection · Antiprotons from DM · 0.98
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We have computed the antiproton flux at Earth using DRAGON [ref] for various models of annihilating DM, as summarized in Table [ref] and including electroweak corrections [ref] .
Antiprotons from dark matter annihilation in the Galaxy: astrophysical uncertainties · Antiprotons from DM · 0.98
Uses data or values from 2 papers
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In the present paper, we have considered two propagation models, namely KRA and THK, defined from the choice of propagation parameters and injection spectra illustrated in Table II of Ref. [ref] , found by looking for good fits to B/C data and PAMELA proton data.
Antiprotons from dark matter annihilation in the Galaxy: astrophysical uncertainties · Secondary antiprotons · 0.85
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In the above expressions, $n_1$ and $u_1$ are the background gas target density and the fluid velocity in the upstream region of the shock, fixed as in Ref. [ref] to $2^-3$ and $0.5×10^-8/s$, respectively.
High-energy antiprotons from old supernova remnants · Antiprotons accelerated in supernova remnants · 0.99
Compares with 2 papers
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We have solved the equations above numerically in order to estimate the ratio ([ref]) and we have checked that our results match the ones in Ref. [ref] for the same choice of parameters.
High-energy antiprotons from old supernova remnants · Antiprotons accelerated in supernova remnants · 1.00
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The paper [ref] uses instead r = 4.
Constraining the origin of the rising cosmic ray positron fraction with the boron-to-carbon ratio · Investigating the degeneracies: fit DM signal using SNR model · 0.80
Cites as support 1 paper
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First, the fact that no anomalous signal is seen in antiprotons data in the same range of energies puts severe constraints on DM properties [ref] and tends to favour the so-called leptophylic models, in which DM only couples to leptons.
Indirect Searches for Dark Matter: a status review · Introduction · 0.96
Cites as background 3 papers
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Here we briefly recall the basics of the astrophysical mechanism leading to primary antiprotons and we refer to the original papers, Refs. [ref] , for further details.
The origin of the positron excess in cosmic rays · Antiprotons accelerated in supernova remnants · 1.00
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Here we briefly recall the basics of the astrophysical mechanism leading to primary antiprotons and we refer to the original papers, Refs. [ref] , for further details.
High-energy antiprotons from old supernova remnants · Antiprotons accelerated in supernova remnants · 1.00
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In general, the propagation of Cosmic Rays through the galaxy is regulated by the diffusion equation (see for instance Ref. [ref] )
Cosmic-Ray Nuclei, Antiprotons and Gamma-rays in the Galaxy: a New Diffusion Model · Secondary antiprotons · 0.96
Discussion
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