Apr 7 – 9, 2014
Royal Holloway, University of London
Europe/London timezone
Institute of Physics 2014 Joint High Energy Particle Physics and Astro Particle Physics Groups Annual Meeting

Simple steps to analyse direct detection experiments without halo uncertainties

Apr 8, 2014, 3:00 PM
Room D (Windsor Building)

Room D

Windsor Building

contributed talk Particle Astrophysics, Current and Future Parallel 1D


Felix Kahlhoefer (University of Oxford)


Uncertainty in the local velocity distribution of dark matter is a key difficulty in the analysis of data from direct detection experiments. In my talk, I will propose a completely new approach for dealing with this uncertainty that does not involve any assumptions about astrophysics. By decomposing the dark matter velocity distribution into a sum of a large number of streams with different speeds and densities, we can find the velocity integral which best describes a given set of direct detection data for a hypothetical dark matter model. This method is conceptually simple, and numerically very efficient. I will discuss how to apply this method to estimate dark matter parameters independent of astrophysical uncertainties, choosing the ratio of proton to neutron couplings of dark matter as an interesting example.

Primary author

Felix Kahlhoefer (University of Oxford)


Dr Brian Feldstein (University of Oxford)

Presentation materials