Towards a refined reference Earth model for geo-neutrinos.

Recently the Borexino [1] and KamLAND [2] collaborations reported evidence of the geo-neutrino signal at more than 4 sigma. These experimental results constrain the contribution of radiogenic heat production in the Earth and provide a crucial test of the existing Bulk Silicate Earth (BSE) models. We developed a high resolution, geospatial reference model for the crust and lithospheric mantle in order to determine the U and Th concentration in the deep Earth from the geo-neutrino signal