scholarly journals THE SEARCH FOR DARK MATTER (WIMPs): AT LOW MASS AND WITH NEW METHODS

2011 ◽  
Vol 26 (13) ◽  
pp. 925-935 ◽  
Author(s):  
DAVID B. CLINE
Keyword(s):  
Dark Matter ◽  
Experimental Methods ◽  
Mass Region ◽  
Low Energy ◽  
Phase Detector ◽  
Liquid Xenon ◽  
Energy Response ◽  
Two Phase ◽  
New Methods ◽  
Low Mass

We briefly review the constraints on the search for low mass WIMPs (<15 GeV) and the various experimental methods. These experiments depend on the response of detectors to low energy signals (less than 15 keV equivalent energy). We then describe recent fits to the data and attempt to determine L eff , the energy response at low energy. We find that the use of a liquid Xenon two-phase detector that employs the S2 data near threshold is the most sensitive current study of the low mass region. We rely on some talks at Dark Matter 2010.

Performance and Fundamental Processes at Low Energy in a Two-Phase Liquid Xenon Dark Matter Detector

2007 ◽  
Vol 173 ◽  
pp. 160-163 ◽  
Author(s):  
T. Shutt ◽  
C.E. Dahl ◽  
J. Kwong ◽  
A. Bolozdynya ◽  
P. Brusov
Keyword(s):  
Dark Matter ◽  
Low Energy ◽  
Liquid Xenon ◽  
Two Phase ◽  
Phase Liquid

scholarly journals DARK MATTER SEARCHES WITH SUB-keV GERMANIUM DETECTOR

2010 ◽  
Vol 25 (11n12) ◽  
pp. 944-950
Author(s):  
HENRY T. WONG
Keyword(s):  
Dark Matter ◽  
Research Program ◽  
Magnetic Moments ◽  
Germanium Detector ◽  
Coherent Scattering ◽  
Low Energy ◽  
Underground Laboratory ◽  
Germanium Detectors ◽  
Low Mass ◽  
Under Construction

The theme of the TEXONO research program is on the studies of low energy neutrino and dark matter physics. The current goals are on the development of germanium detectors with sub-keV sensitivities to realize experiments on neutrino magnetic moments, neutrino-nucleus coherent scattering, as well as WIMP dark matter searches. A threshold of 100–200 eV was achieved with prototype detectors at the Kuo-Sheng Neutrino Laboratory. New limits were placed for low-mass WIMPs. The dark matter program will move to a new underground laboratory currently under construction in Sichuan, China.

Skyrmions and effective Lagrangians

1989 ◽  
Vol 67 (12) ◽  
pp. 1168-1179
Author(s):  
B. Loiseau
Keyword(s):  
Inner Core ◽  
High Energy ◽  
Low Energy ◽  
Symmetric Model ◽  
Two Phase ◽  
Effective Lagrangian ◽  
Large N ◽  
Topological Current ◽  
Low Mass ◽  
Baryon Current

The need to model quantum chromodynamics (QCD) at low energy is emphasized. An outline of the1/NC expansion of QCD, for large NC, shows the deep link between the Skyrme effective Lagrangian and QCD. The Skyrme model, built from the nonlinear σ model plus a stabilizer term related to vector dominance, is briefly described. The model satisfies like QCD chiral symmetry. We illustrate how the gauged Wess–Zumino action demonstrates that the topological current can be identified with the baryon current. We recall how one can show that the topological soliton is a fermion for odd NC. An example of an effective Lagrangian, built from π and low-mass vector mesons, ω, ρ, and A1 fields, is given. It describes rather well low-energy meson and baryon physics. Predictions of effective Lagrangians of the Skyrme type on meson–meson, meson–baryon, and baryon–baryon scatterings at low energy are depicted. A two-phase chiral symmetric model, the chiral bag, is introduced. It contains an inner core of confined quarks and gluons surrounded by meson fields in the topological configuration of a Skyrmion. It can describe nuclei from the low- to the high-energy range.

scholarly journals Lithium-Containing Crystals for Light Dark Matter Search Experiments

2019 ◽  
Vol 199 (1-2) ◽  
pp. 510-518 ◽  
Author(s):  
E. Bertoldo ◽  
◽  
A. H. Abdelhameed ◽  
G. Angloher ◽  
P. Bauer ◽  
...  
Keyword(s):  
Dark Matter ◽  
Neutron Flux ◽  
Mass Region ◽  
Dark Matter Search ◽  
Ideal Candidate ◽  
Low Mass ◽  
Direct Dark Matter

AbstractIn the current direct dark matter search landscape, the leading experiments in the sub-GeV mass region mostly rely on cryogenic techniques which employ crystalline targets. One attractive type of crystals for these experiments is those containing lithium, due to the fact that $$^7\hbox {Li}$$7Li is an ideal candidate to study spin-dependent dark matter interactions in the low mass region. Furthermore, $$^6\hbox {Li}$$6Li can absorb neutrons, a challenging background for dark matter experiments, through a distinctive signature which allows the monitoring of the neutron flux directly on site. In this work, we show the results obtained with three different detectors based on $$\hbox {LiAlO}_2$$LiAlO2, a target crystal never used before in cryogenic experiments.

scholarly journals Constraints to Dark Matter from Inert Higgs Doublet Model

2016 ◽  
Vol 2016 ◽  
pp. 1-9 ◽  
Author(s):  
Marco Aurelio Díaz ◽  
Benjamin Koch ◽  
Sebastián Urrutia-Quiroga
Keyword(s):  
Dark Matter ◽  
Higgs Doublet ◽  
Mass Region ◽  
Missing Energy ◽  
Energy Channel ◽  
Dark Matter Relic Density ◽  
Low Mass ◽  
Doublet Model ◽  
Two Jets ◽  
Matter Detection

We study the Inert Higgs Doublet Model and its inert scalar HiggsHas the only source for dark matter. It is found that three mass regions of the inert scalar Higgs can give the correct dark matter relic density. The low mass region (between 3 and 50 GeV) is ruled out. New direct dark matter detection experiments will probe the intermediate (between 60 and 100 GeV) and high (heavier than 550 GeV) mass regions. Collider experiments are advised to search forD±→HW±decay in the two jets plus missing energy channel.

scholarly journals Constraints on general neutrino interactions with exotic fermion from neutrino-electron scattering experiments

2021 ◽  
Vol 2021 (5) ◽  
Author(s):  
Zikang Chen ◽  
Tong Li ◽  
Jiajun Liao
Keyword(s):  
Dark Matter ◽  
Electron Scattering ◽  
Direct Detection ◽  
Mass Region ◽  
Coupling Coefficients ◽  
Neutrino Scattering ◽  
Neutrino Interactions ◽  
Dipole Interactions ◽  
Low Mass ◽  
Bound Electron

Abstract The couplings between the neutrinos and exotic fermion can be probed in both neutrino scattering experiments and dark matter direct detection experiments. We present a detailed analysis of the general neutrino interactions with an exotic fermion and electrons at neutrino-electron scattering experiments. We obtain the constraints on the coupling coefficients of the scalar, pseudoscalar, vector, axialvector, tensor and electromagnetic dipole interactions from the CHARM-II, TEXONO and Borexino experiments. For the flavor-universal interactions, we find that the Borexino experiment sets the strongest bounds in the low mass region for the electromagnetic dipole interactions, and the CHARM-II experiment dominates the bounds for other scenarios. If the interactions are flavor dependent, the bounds from the CHARM-II or TEXONO experiment can be avoided, and there are correlations between the flavored coupling coefficients for the Borexino experiment. We also discuss the detection of sub-MeV DM absorbed by bound electron targets and illustrate that the vector coefficients preferred by XENON1T data are allowed by the neutrino-electron scattering experiments.

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