RECORD
Prospects for determining the particle/antiparticle nature of WIMP dark matter with direct detection experiments
High Energy Physics - Phenomenology · Submitted 23 Jun 2017
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim These results show that future direct detection signals could be used to exclude, at a statistically significant level, a Majorana or a real DM particle, giving a critical clue about the identity of the Dark Matter.
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.
Open the compiled record
The abstract, sentence by sentence
It was recently pointed out that direct detection signals from at least three different targets may be used to determine whether the Dark Matter (DM) particle is different from its antiparticle. In this work, we examine in detail the feasibility of this test under different conditions, motivated by proposals for future detectors. Specifically, we perform likelihood fits to mock data under the hypotheses that the DM particle is identical to or different from its antiparticle, and determine the significance with which the former can be rejected in favor of the latter. In our analysis, we consider 3 different values of the DM mass ($50$ GeV, $300$ GeV, $1$ TeV) and 4 different experimental ensembles, each consisting of at least 3 different targets -- Xe and Ar plus one among the following: Si, Ge, $\mathrm{CaWO_4}$, or Ge/$\mathrm{CaWO_4}$. For each of these experimental ensembles and each DM mass, the expected discrimination significance is calculated as a function of the DM-nucleon couplings. In the best case scenario, the discrimination significance can reach $\mathcal{O}(3\sigma)$ for three of the four ensembles considered, and $\mathcal{O}(5\sigma)$ for the ensemble including $\mathrm{Si}$, highlighting the need for a variety of experimental targets in order to determine the DM properties. These results show that future direct detection signals could be used to exclude, at a statistically significant level, a Majorana or a real DM particle, giving a critical clue about the identity of the Dark Matter.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | It was recently pointed out that direct detection signals from at least three different targets may be used to determine whether the Dark Matter (DM) particle is different from its antiparticle. | background 1.00 | 0.04 | 0.05 | hedged possibility 0.96 |
| s1 | In this work, we examine in detail the feasibility of this test under different conditions, motivated by proposals for future detectors. | contribution 0.97 | 0.62 | 0.03 | asserted 0.79 |
| s2 | Specifically, we perform likelihood fits to mock data under the hypotheses that the DM particle is identical to or different from its antiparticle, and determine the significance with which the former can be rejected in favor of the latter. | method 0.96 | 0.96 | 0.04 | asserted 0.97 |
| s3 | In our analysis, we consider 3 different values of the DM mass ($50$ GeV, $300$ GeV, $1$ TeV) and 4 different experimental ensembles, each consisting of at least 3 different targets -- Xe and Ar plus one among the following: Si, Ge, $\mathrm{CaWO_4}$, or Ge/$\mathrm{CaWO_4}$. | method 0.99 | 0.80 | 0.02 | asserted 0.98 |
| s4 | For each of these experimental ensembles and each DM mass, the expected discrimination significance is calculated as a function of the DM-nucleon couplings. | method 0.97 | 0.89 | 0.03 | asserted 0.98 |
| s5 | In the best case scenario, the discrimination significance can reach $\mathcal{O}(3\sigma)$ for three of the four ensembles considered, and $\mathcal{O}(5\sigma)$ for the ensemble including $\mathrm{Si}$, highlighting the need for a variety of experimental targets in order to determine the DM properties. | result 0.99 | 0.94 | 0.39 | hedged possibility 0.55 |
| s6 | These results show that future direct detection signals could be used to exclude, at a statistically significant level, a Majorana or a real DM particle, giving a critical clue about the identity of the Dark Matter. | interpretation 0.99 | 0.84 | 0.89 | hedged possibility 0.59 |
What was examined, and what was not
- arXiv listing abstract v2
- full text
- figures and tables
- references and citing sentences
- relations to other papers
- P abstract
- S sections
- T body sentences
- C citations
- R cross-paper relations
The paper
Original abstract
It was recently pointed out that direct detection signals from at least three different targets may be used to determine whether the Dark Matter (DM) particle is different from its antiparticle. In this work, we examine in detail the feasibility of this test under different conditions, motivated by proposals for future detectors. Specifically, we perform likelihood fits to mock data under the hypotheses that the DM particle is identical to or different from its antiparticle, and determine the significance with which the former can be rejected in favor of the latter. In our analysis, we consider 3 different values of the DM mass ($50$ GeV, $300$ GeV, $1$ TeV) and 4 different experimental ensembles, each consisting of at least 3 different targets -- Xe and Ar plus one among the following: Si, Ge, $\mathrm{CaWO_4}$, or Ge/$\mathrm{CaWO_4}$. For each of these experimental ensembles and each DM mass, the expected discrimination significance is calculated as a function of the DM-nucleon couplings. In the best case scenario, the discrimination significance can reach $\mathcal{O}(3\sigma)$ for three of the four ensembles considered, and $\mathcal{O}(5\sigma)$ for the ensemble including $\mathrm{Si}$, highlighting the need for a variety of experimental targets in order to determine the DM properties. These results show that future direct detection signals could be used to exclude, at a statistically significant level, a Majorana or a real DM particle, giving a critical clue about the identity of the Dark Matter.
Human review
References
How the literature uses it
12 arXiv papers cite this in 12 sentences
Papers citing it · 9 sentences without a confident label
Cites it as background 3 papers
-
Proposals for extracting the DM particle spin and particle-antiparticle nature from direct detection data can be found in [ref] .
Determining Dark Matter properties with a XENONnT/LZ signal and LHC-Run3 mono-jet searches · Introduction · 0.94
-
experiments has been remarkable in recent years [ref] .
Prospects for Dark Matter signal discovery and model selection via timing information in a low-threshold experiment · Introduction · 0.88
-
Thus, tests may devised by which these properties may be marked out [ref] .
Characterizing dark matter at the LHC in Drell-Yan events · Introduction · 0.88
What it cites · 29 sentences without a confident label
Uses the method or tool of 1 paper
-
As described in detail in QRY17 [ref] , we can use these two measurements to estimate the DM-nucleon couplings ($$, $$), assuming that the DM is a Majorana particle.
Is the dark matter particle its own antiparticle? · Analytic Estimates · 0.98
Uses data or values from 9 papers
-
We also fix the overall normalization of the couplings to lie just below the final LUX bounds [ref] .
Results from a search for dark matter in the complete LUX exposure · Statistical procedure · 0.97
-
For the Ar detector, we take the exposure from DEAP-50T [ref] (50 ton $×$ 3 yr) and the approximate threshold from DarkSide-50 [ref] .
Results from the first use of low radioactivity argon in a dark matter search · Mock Experiments · 1.00
-
The speed distribution (in the Galactic frame) is truncated at the local escape speed of the Milky Way $v_esc ≈544$ [ref] .
The RAVE survey: the Galactic escape speed and the mass of the Milky Way · Direct Detection Event Rate · 0.99
Cites as background 27 papers
-
Once such signals are detected, it remains the task of extracting from them, and possibly in combination with signals from other experiments, the fundamental properties of the DM particle [ref] .
Integrating Out Astrophysical Uncertainties · Introduction · 0.86
-
Once such signals are detected, it remains the task of extracting from them, and possibly in combination with signals from other experiments, the fundamental properties of the DM particle [ref] .
Complementarity of Dark Matter Direct Detection Targets · Introduction · 0.86
-
Once such signals are detected, it remains the task of extracting from them, and possibly in combination with signals from other experiments, the fundamental properties of the DM particle [ref] .
Global fits of the dark matter-nucleon effective interactions · Introduction · 0.86
Discussion
Know something about this paper? Leave a comment, or highlight any passage above to comment on it.