The ArDM project: a Direct Detection Experiment, based on Liquid Argon, for the Search of Dark Matter

2007 ◽  
Vol 173 ◽  
pp. 141-143 ◽  
Author(s):  
Lilian Kaufmann ◽  
André Rubbia
Keyword(s):  
Dark Matter ◽  
Direct Detection ◽  
Liquid Argon ◽  
Detection Experiment

scholarly journals A Review of Basic Energy Reconstruction Techniques in Liquid Xenon and Argon Detectors for Dark Matter and Neutrino Physics Using NEST

Instruments ◽  
2021 ◽  
Vol 5 (1) ◽  
pp. 13
Author(s):  
Matthew Szydagis ◽  
Grant A. Block ◽  
Collin Farquhar ◽  
Alexander J. Flesher ◽  
Ekaterina S. Kozlova ◽  
...  
Keyword(s):  
Dark Matter ◽  
Neutrino Physics ◽  
Electric Fields ◽  
Direct Detection ◽  
Profile Likelihood ◽  
Liquid Argon ◽  
Energy Scale ◽  
Liquid Xenon ◽  
Nuclear Recoils ◽  
Available Information

Detectors based upon the noble elements, especially liquid xenon as well as liquid argon, as both single- and dual-phase types, require reconstruction of the energies of interacting particles, both in the field of direct detection of dark matter (weakly interacting massive particles WIMPs, axions, etc.) and in neutrino physics. Experimentalists, as well as theorists who reanalyze/reinterpret experimental data, have used a few different techniques over the past few decades. In this paper, we review techniques based on solely the primary scintillation channel, the ionization or secondary channel available at non-zero drift electric fields, and combined techniques that include a simple linear combination and weighted averages, with a brief discussion of the application of profile likelihood, maximum likelihood, and machine learning. Comparing results for electron recoils (beta and gamma interactions) and nuclear recoils (primarily from neutrons) from the Noble Element Simulation Technique (NEST) simulation to available data, we confirm that combining all available information generates higher-precision means, lower widths (energy resolution), and more symmetric shapes (approximately Gaussian) especially at keV-scale energies, with the symmetry even greater when thresholding is addressed. Near thresholds, bias from upward fluctuations matters. For MeV-GeV scales, if only one channel is utilized, an ionization-only-based energy scale outperforms scintillation; channel combination remains beneficial. We discuss here what major collaborations use.

PandaX: A deep underground dark matter search experiment in China using liquid xenon

2018 ◽  
Vol 33 (30) ◽  
pp. 1830013 ◽  
Author(s):  
Li Zhao ◽  
Jianglai Liu
Keyword(s):  
Dark Matter ◽  
Direct Detection ◽  
Underground Laboratory ◽  
Liquid Xenon ◽  
Detection Experiment ◽  
Dark Matter Search ◽  
The Future ◽  
Search Experiment ◽  
Deep Underground ◽  
Scientific Results

The nature of dark matter is one of the most fundamental scientific unknowns. Particle physicists have spent decades searching for evidence of dark matter particles. The PandaX project is a staged xenon-based dark matter direct detection experiment located at the China Jinping Underground Laboratory. In this paper, we give an overview of the PandaX experiment, discuss its recent scientific results, and outline the plan for the future.

scholarly journals A new way to test the WIMP dark matter models

2021 ◽  
Vol 2021 (8) ◽  
Author(s):  
Wei Cheng ◽  
Yuan He ◽  
Jing-Wang Diao ◽  
Yu Pan ◽  
Jun Zeng ◽  
...  
Keyword(s):  
Dark Matter ◽  
Dark Energy ◽  
Direct Detection ◽  
Massive Particle ◽  
Indirect Detection ◽  
Detection Experiment ◽  
Cosmological Observations ◽  
Relic Density ◽  
Interaction Term ◽  
Near Future

Abstract In this paper, we investigate the possibility of testing the weakly interacting massive particle (WIMP) dark matter (DM) models by applying the simplest phenomenological model which introduces an interaction term between dark energy (DE) and WIMP DM, i.e., Q = 3γDMHρDM. In general, the coupling strength γDE is close to 0 as the interaction between DE and WIMP DM is very weak, thus the effect of γDE on the evolution of Y associated with DM energy density can be safely neglected. Meanwhile, our numerical calculation also indicates that xf ≈ 20 is associated with DM freeze-out temperature, which is the same as the vanishing interaction scenario. As for DM relic density, it will be magnified by $$ \frac{2-3{\upgamma}_{\mathrm{DM}}}{2}{\left[2\pi {g}_{\ast }{m}_{\mathrm{DM}}^3/\left(45{s}_0{x}_f^3\right)\right]}^{\gamma_{\mathrm{DM}}} $$ 2 − 3 γ DM 2 2 π g ∗ m DM 3 / 45 s 0 x f 3 γ DM times, which provides a new way to test WIMP DM models. As an example, we analyze the case in which WIMP DM is a scalar DM. (SGL+SNe+Hz) and (CMB+BAO+SNe) cosmological observations will give γDM = $$ {0.134}_{-0.069}^{+0.17} $$ 0.134 − 0.069 + 0.17 and γDM = −0.0008 ± 0.0016, respectively. After further considering the constraints from DM direct detection experiment, DM indirect detection experiment, and DM relic density, we find that the allowed parameter space of the scalar DM model will be completely excluded for the former cosmological observations, while it will increase for the latter ones. Those two cosmological observations lead to an almost paradoxical conclusion. Therefore, one could expect more stringent constraints on the WMIP DM models, with the accumulation of more accurate cosmological observations in the near future.

Study of sensitivity to dark matter scattering for liquid argon detectors in EFT framework

2020 ◽  
Vol 35 (36) ◽  
pp. 2044025
Author(s):  
A. V. Grobov ◽  
N. M. Levashko
Keyword(s):  
Field Theory ◽  
Dark Matter ◽  
Velocity Distribution ◽  
Effective Field Theory ◽  
Direct Detection ◽  
Liquid Argon ◽  
Effective Field ◽  
Standard Analysis ◽  
Sensitivity Curves ◽  
Dark Matter Scattering

The framework of nonrelativistic effective field theory (NREFT) aims to generalize the standard analysis of direct detection experiments in terms of spin-dependent (SD) and spin-independent (SI) interactions. Here we performed EFT analysis and obtained sensitivity curves for liquid argon detectors to scattering of dark matter (DM) particles in case of different interaction models. DM velocity distribution and experimental dependencies are also described.

scholarly journals Implications of the XENON1T excess on the dark matter interpretation

2021 ◽  
Vol 2021 (5) ◽  
Author(s):  
Haider Alhazmi ◽  
Doojin Kim ◽  
Kyoungchul Kong ◽  
Gopolang Mohlabeng ◽  
Jong-Chul Park ◽  
...  
Keyword(s):  
Dark Matter ◽  
Fast Moving ◽  
Direct Detection ◽  
Recent Observation ◽  
Axial Vector ◽  
Detection Experiment ◽  
Electron Recoil ◽  
Coupling Parameters ◽  
Pseudo Scalar ◽  
Parameter Values

Abstract The dark matter interpretation for a recent observation of excessive electron recoil events at the XENON1T detector seems challenging because its velocity is not large enough to give rise to recoiling electrons of $$ \mathcal{O}\left(\mathrm{keV}\right) $$ O keV . Fast-moving or boosted dark matter scenarios are receiving attention as a remedy for this issue, rendering the dark matter interpretation a possibility to explain the anomaly. We investigate various scenarios where such dark matter of spin 0 and 1/2 interacts with electrons via an exchange of vector, axial-vector, pseudo-scalar, or scalar mediators. We find parameter values not only to reproduce the excess but to be consistent with existing bounds. Our study suggests that the scales of mass and coupling parameters preferred by the excess can be mostly affected by the type of mediator, and that significantly boosted dark matter can explain the excess depending on the mediator type and its mass choice. The method proposed in this work is general, and hence readily applicable to the interpretation of observed data in the dark matter direct detection experiment.

scholarly journals SABRE and the Stawell Underground Physics Laboratory Dark Matter Research at the Australian National University

2020 ◽  
Vol 232 ◽  
pp. 01002 ◽  
Author(s):  
L. J. Bignell ◽  
E. Barberio ◽  
M. B. Froehlich ◽  
G. J. Lane ◽  
O. Lennon ◽  
...  
Keyword(s):  
Dark Matter ◽  
Direct Detection ◽  
Liquid Scintillator ◽  
Detection Experiment ◽  
Physics Laboratory ◽  
Quenching Factor ◽  
National University ◽  
Deep Underground ◽  
Underground Physics ◽  
Under Construction

The direct detection of dark matter is a key problem in astroparticle physics that generally requires the use of deep-underground laboratories for a low-background environment where the rare signals from dark matter interactions can be observed. This work reports on the Stawell Underground Physics Laboratory – currently under construction and the first such laboratory in the Southern Hemisphere – and the associated research program. A particular focus will be given to ANU’s contribution to SABRE, a NaI:Tl dark matter, direct detection experiment that aims to confirm or refute the long-standing DAMA result. Preliminary measurements of the NaI:Tl quenching factor and characterisation of the SABRE liquid scintillator veto are reported.

scholarly journals SABRE: A New NaI(T1) Dark Matter Direct Detection Experiment

2015 ◽  
Vol 61 ◽  
pp. 169-178 ◽  
Author(s):  
Emily Shields ◽  
Jingke Xu ◽  
Frank Calaprice
Keyword(s):  
Dark Matter ◽  
Direct Detection ◽  
Detection Experiment
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