7-9 April 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

First results from the LUX dark matter experiment

8 Apr 2014, 13:15
15m
Room D (Windsor Building)

Room D

Windsor Building

contributed talk Particle Astrophysics, Current and Future Parallel 1D

Speaker

Dr Lea Reichhart (University College London)

Description

A large number of astronomical and cosmological observations point towards the existence of an unknown dark component dominating the matter content of our Universe. The most compelling candidates for dark matter are Weakly Interacting Massive Particles (WIMPs), which may be detected in low background experiments located deep underground, searching for direct interactions of WIMPs with dedicated target materials. The Large Underground Xenon (LUX) experiment, operated in the Davis Campus of the SURF laboratory, USA, has announced results from its first science run in late 2013. From an exposure of 85 live days, having found no evidence of signal above expected background, LUX has set constraints on scalar WIMP-nucleon interactions above 7.6$\times$10$^{-46}$ cm$^{2}$ at 33 GeV/c$^{2}$ WIMP mass (90% CL). The sensitivity for light WIMPs (<10 GeV/c$^{2}$) is some 20 times higher than that of any other experiment, and the LUX result seriously challenges the interpretation of hints of signal claimed by other experiments as arising from low-mass WIMPs.

Primary author

Dr Lea Reichhart (University College London)

Presentation Materials