23-28 June 2014
Amsterdam
Europe/Zurich timezone

A CoGeNT Analysis: Is there evidence for a Dark Matter signal?

26 Jun 2014, 15:15
20m
Room 3 (Tuschinski Theatre)

Room 3

Tuschinski Theatre

Presentation Dark Matter Direct Detection Dark Matter: Direct Detection

Speaker

Jonathan Davis (IPPP, Durham University)

Description

Data from the CoGeNT experiment has been claimed to be compatible with a light Dark Matter particle scattering off nucleons, to a significance of approximately 2.5 sigma. I will critically assess this possibility, using the methods introduced in arXiv:1405.0495. I present a Bayesian and frequentist analysis of CoGeNT data, with particular focus on the removal of surface events. By marginalising over the uncertainty in the surface event background, I find less than one sigma evidence for Dark Matter recoils in CoGeNT data.

Primary author

Jonathan Davis (IPPP, Durham University)

Presentation Materials