High Energy Physics - Phenomenology · arXiv:2404.16390 v1 · submitted 25 Apr 2024
Low-mass dark sector searches with deuteron photodisintegration
The paper says
“The projected bounds are found to be competitive for an axial-vector or pseudoscalar scenario, but not for a vector or scalar scenario.”
from the abstract · picked out as the main claim by a classifier
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Abstract
Recent years have seen much activity in searches for dark-sector messenger particles in the 10-100 MeV mass range, especially in view of a potential new light boson conjectured by the ATOMKI collaboration, X17. Under the assumption that the messenger particle has definite parity and either zero or unit spin, quite stringent bounds already exist on its coupling to electrons and protons. Equally stringent bounds on the neutron coupling do not exist yet, but are nonetheless desirable. We explore how measurements of deuteron photodisintegration with a quasi-free neutron can yield bounds on the neutron coupling, and compute projections for a potential measurement at the lowenergy high-intensity electron scattering experiment MAGIX@MESA. The projected bounds are found to be competitive for an axial-vector or pseudoscalar scenario, but not for a vector or scalar scenario.
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abstract compiled · 2026-09-23 · no language-model review
How the main claim is stated: asserted 1.00
What the abstract itself states, as probabilities: claims first 0.06 · states limitation 0.92 · human participants 0.02 · controlled comparison 0.05 · randomized assignment 0.01 · states quantitative result 0.11 · compares with prior results 0.74 · mentions code or data availability 0.02
The abstract, sentence by sentence
This table labels the abstract only (arXiv listing abstract v1). The number is the probability the classifier gave the label.
| Sentence | Role | The authors' own work | States the main conclusion | Strength |
|---|---|---|---|---|
| Recent years have seen much activity in searches for dark-sector messenger particles in the 10-100 MeV mass range, especially in view of a potential new light boson conjectured by the ATOMKI collaboration, X17. | background 1.00 | 0.04 | 0.02 | asserted 0.73 |
| Under the assumption that the messenger particle has definite parity and either zero or unit spin, quite stringent bounds already exist on its coupling to electrons and protons. | background 0.97 | 0.04 | 0.03 | asserted 1.00 |
| Equally stringent bounds on the neutron coupling do not exist yet, but are nonetheless desirable. | gap 1.00 | 0.04 | 0.03 | asserted 0.98 |
| We explore how measurements of deuteron photodisintegration with a quasi-free neutron can yield bounds on the neutron coupling, and compute projections for a potential measurement at the lowenergy high-intensity electron scattering experiment MAGIX@MESA. | contribution 0.96 | 0.88 | 0.11 | asserted 0.76 |
| The projected bounds are found to be competitive for an axial-vector or pseudoscalar scenario, but not for a vector or scalar scenario. | result 0.98 | 0.94 | 0.86 | asserted 1.00 |
What kind of paper the classifier reports this is: simulation study 0.49 · evidence from simulation or computation 0.95
What was examined, and what was not
Sources read
- arXiv listing abstract v1
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- full text
- figures and tables
- references and citing sentences
- relations to other papers
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- P abstract
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- S sections
- T body sentences
- C citations
- R cross-paper relations
How the labels were made
Compiled by classifier-1.13.0 via TypeSafe API, question bank abstract-p1-20260923, 2026-09-23: 1 request, 4,339 input tokens.
Every quoted sentence on this record is the authors'. Every label is from Pith's closed vocabulary, with the probability shown beside it. This record as JSON
How the literature uses it
1 arXiv paper cite this in 1 sentence
What it cites · 33 sentences without a confident label
Uses the method or tool of 2 papers
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Then, the reach at the $n_σ$ confidence level is given by [ref] [equation] where $σ_i$ are the integrated signal and background cross sections and we denote the integrated luminosity by $L = ∫dt ℒ$, with $ℒ$ the luminosity.
Theoretical framework to analyze searches for hidden light gauge bosons in electron scattering fixed target experiments · Neutron-coupling reach for MAGIX@MESA · 0.93
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For the Dirac and Pauli form factors, $F_1$ and $F_2$ respectively, we use the parametrization given in Ref. [ref] .
A new parameterization of the nucleon elastic form factors · Conventions · 0.97
Uses data or values from 2 papers
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To calculate the reach we have taken the projected luminosity of MAGIX@MESA's gas-jet target, $ℒ = 10^35$ cm$^-2$ s$^-1$ [ref] , together with a beam time of $2000$ h, giving an integrated luminosity $L = 7.2 ×10^8$ nb$^-1$.
Operation and characterization of a windowless gas jet target in high-intensity electron beams · Neutron-coupling reach for MAGIX@MESA · 0.99
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We can constrain X17's couplings by using the branching fractions of the $^8$Be and $^12$C decays reported by the ATOMKI collaboration [ref] , [equation] as well as from the branching fraction of $^4$He decays.
Observation of Anomalous Internal Pair Creation in $^8$Be: A Possible Signature of a Light, Neutral Boson · Further results related to the X17 anomaly · 1.00
Compares with 2 papers
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Our $^8$Be limits differ slightly from Refs. [ref] as we use a different mixing angle $θ_1^+$.
Pion decay constraints on exotic 17 MeV vector bosons · Further results related to the X17 anomaly · 0.97
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Note that earlier dark-photon searches have already achieved a resolution of 0.2 MeV$/c^2$ [ref] .
Search for light massive gauge bosons as an explanation of the $(g-2)_\mu$ anomaly at MAMI · Introduction · 0.91
Cites as background 13 papers
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As mentioned in the introduction, recent results of the ATOMKI collaboration have garnered significant theoretical and experimental interest; in a series of experiments [ref] the collaboration claims to have found evidence of a new, light boson dubbed X17.
Observation of the X17 anomaly in the decay of the Giant Dipole Resonance of $^8$Be · Further results related to the X17 anomaly · 0.96
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As mentioned in the introduction, recent results of the ATOMKI collaboration have garnered significant theoretical and experimental interest; in a series of experiments [ref] the collaboration claims to have found evidence of a new, light boson dubbed X17.
Observation of Anomalous Internal Pair Creation in $^8$Be: A Possible Signature of a Light, Neutral Boson · Further results related to the X17 anomaly · 0.96
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Herein we deal with visible decays of the mediator $X$ to an electron-positron pair, where one typically searches for $X$ by directing a high-intensity, $𝒪$(100 MeV–few GeV) electron beam at a fixed gas-jet target [ref] .
Theoretical framework to analyze searches for hidden light gauge bosons in electron scattering fixed target experiments · Introduction · 0.84
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