Cosmic-Ray Positron from Superparticle Dark Matter and the PAMELA Anomaly

Koji Ishiwata; Shigeki Matsumoto; Takeo Moroi

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Cosmic-Ray Positron from Superparticle Dark Matter and the PAMELA Anomaly

Koji Ishiwata, Shigeki Matsumoto, Takeo Moroi

High Energy Physics - Phenomenology · Submitted 3 Nov 2008

abstract compiled · 2026-09-23 · no language-model review

The authors' main claim We show that the positron excess observed by the PAMELA can be explained with some of the superparticle dark matter.

how it is stated · asserted 0.86 read the record →

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arXiv ID0811.0250 (version 2)

Pith IDGBP64RVE, Pith's permanent record of this paper and its review

CitationKoji Ishiwata, Shigeki Matsumoto, Takeo Moroi. "Cosmic-Ray Positron from Superparticle Dark Matter and the PAMELA Anomaly." arXiv:0811.0250 (2008). https://pith.science/paper/GBP64RVE

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The compiled record

The paper's own sentences, arranged. Each label is drawn from a closed vocabulary; the number beside it is the probability the classifier gave that label. Numbers in the tables are the authors', checked by code. No sentence in this record was written by a model.

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Compiled by classifier-1.13-20260917 via OpenRouter, question bank abstract-p1-20260923, 2026-09-23: 1 request, 2,938 input tokens, $0.0001 reported.

What the abstract itself states, as probabilities: claims first 0.03 · states limitation 0.14 · human participants 0.01 · controlled comparison 0.04 · randomized assignment 0.01 · states quantitative result 0.06 · compares with prior results 0.27 · mentions code or data availability 0.02.

The abstract, sentence by sentence

arXiv listing abstract v2. Results and the main claim are underlined; show every role.

Motivated by the anomalous positron flux recently reported by the PAMELA collaboration, we study the cosmic-ray positron produced by the pair annihilation and the decay of superparticle dark matter. We calculate the cosmic-ray positron flux and discuss implications of the PAMELA data. We show that the positron excess observed by the PAMELA can be explained with some of the superparticle dark matter.

background contribution method result interpretation main claim

What the classifier reports for each sentence. The number is the probability it gave the label.
#	sentence	role	the authors' own work	states the main conclusion	strength
s0	Motivated by the anomalous positron flux recently reported by the PAMELA collaboration, we study the cosmic-ray positron produced by the pair annihilation and the decay of superparticle dark matter.	contribution 0.55	0.26	0.05	unclear 0.50
s1	We calculate the cosmic-ray positron flux and discuss implications of the PAMELA data.	contribution 0.76	0.94	0.05	unclear 0.51
s2	We show that the positron excess observed by the PAMELA can be explained with some of the superparticle dark matter.	result 0.93	0.90	0.90	asserted 0.86

What kind of paper the classifier reports this is: theoretical result 0.93 · evidence from analysis of existing data 0.55.

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arXiv listing abstract v2

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full text
figures and tables
references and citing sentences
relations to other papers

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S sections
T body sentences
C citations
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Every quoted sentence on this record is the authors'. Every label is from Pith's closed vocabulary, with the probability shown beside it. Every number in the measurements table is the authors', checked by code. Record as JSON

The paper

Original abstract

Motivated by the anomalous positron flux recently reported by the PAMELA collaboration, we study the cosmic-ray positron produced by the pair annihilation and the decay of superparticle dark matter. We calculate the cosmic-ray positron flux and discuss implications of the PAMELA data. We show that the positron excess observed by the PAMELA can be explained with some of the superparticle dark matter.

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References

How the literature uses it

26 arXiv papers cite this in 38 sentences

Each citing sentence is taken from the citing paper's LaTeX source and typed by Pith's classifier. A label appears at probability 0.8 or more (0.95 for support), a contest at 0.7 or more; the quoted words are the citing authors'. How each label was checked · JSON

Papers citing it · 24 sentences without a confident label

Builds on it 1 paper

In light of the preliminary findings of PAMELA, we revisit the non-thermal neutralino models considered in [ref] to determine whether they could account for the excess[See also a recent discussion in [ref] .].

Is the PAMELA Positron Excess Winos? · Introduction · 0.85

Uses its method or tool 1 paper

(For detail, see [ref] .) We solve the diffusion equation to take account of the effects of the propagation of $e^±$.

PAMELA and ATIC Anomalies in Decaying Gravitino Dark Matter Scenario · Electron and Positron Fluxes · 0.96

Cites it as support 1 paper

This behavior prefers the gravitino DM decaying direct into the positron or anti-muon [ref] .

R-parity Violating Right-Handed Neutrino in Gravitino Dark Matter Scenario · R-parity violation in Right-Handed Neutrino Sector · 0.96

Cites it as background 9 papers

This has led to a multitude of studies trying to explain the data by an exotic contribution from dark matter annihilations [ref] or decays [ref] .

Unstable Gravitino Dark Matter - Prospects for Indirect and Direct Detection · Positrons and Electrons · 0.85
(For early attempts to calulate the spectra of cosmic-ray $e^ $, see [ref] and [ref] for decaying and annihilating dark matter, respectively.) In general, the latter case has the difficulty to reproduce the anomalous cosmic-ray positron and electron fluxes without large enhancement factor, called boost factor.

High Energy Cosmic Rays from Decaying Supersymmetric Dark Matter · Introduction · 0.97
In the literature, there have been many possible mechanisms, such as the astrophysical source like pulsars [ref] , annihilating dark matter (DM) [ref] and decaying DM [ref] .

Imprint of Multi-component Dark Matter on AMS-02 · Introduction · 1.00

What it cites · 7 sentences without a confident label

Uses data or values from 1 paper

For a quantitative discussion, we calculate the $χ^2$ variable using the PAMELA data [ref] , neglecting effects of systematic errors in the theoretical calculation.

Observation of an anomalous positron abundance in the cosmic radiation · Introduction · 1.00

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