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A new halo-independent approach to dark matter direct detection analysis
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Uncertainty in the local dark matter velocity distribution is a key difficulty in the analysis of data from direct detection experiments. Here we propose a new approach for dealing with this uncertainty, which does not involve any assumptions about the structure of the dark matter halo. Given a dark matter model, our method yields the velocity distribution which best describes a set of direct detection data as a finite sum of streams with optimised speeds and densities. The method is conceptually simple and numerically very efficient. We give an explicit example in which the method is applied to determining the ratio of proton to neutron couplings of dark matter from a hypothetical set of future data.
Forward citations
Cited by 3 Pith papers
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Halo-Independent Quantum Sensor Probes of Low-Velocity Dark Matter
A halo-independent method using quantum sensors to probe and reconstruct the local dark matter velocity distribution from direct detection data.
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Astrophysics-independent determination of dark matter parameters from two direct detection signals
A nonparametric statistical test on recoil energies from two different detector targets can determine the dark matter mass without assuming the galactic velocity distribution.
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Information-theoretic astrophysical uncertainties in the effective theory of dark matter direct detection
Using an information-theoretic bound on the halo velocity distribution, dark matter direct-detection limits vary from <10x to ~10,000x near threshold depending on the EFT operator, with higher velocity-weighting opera...
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