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Abstract
Direct WIMP searches with XENON100 and XENON1T
Highlights
An increasing number of astrophysical and astronomical observations points to the existence of a non luminous, non baryonic and cold matter component of the Universe, called Cold Dark Matter (CDM) [1,2,3]
The Dark Matter particles are still undetected, but they have to belong to a category beyond the Standard Model; the most appealing and interesting candidates are the so called Weakly Interactive Massive Particles (WIMPs) predicted by Supersymmetric theories (SUSY), models with extra dimensions and little Higgs models [4,5,6]
Different WIMP detection approaches are used in order to determine the characteristics of such particles: experiments at LHC will try to look for their appearance in the collisions; high energy astro-particle physics experiments are looking for WIMP annihilation signatures from the center of the Sun or from the center of the Galaxy and/or other places where the matter is quite dense whereas Dark Matter direct detection experiments are looking for the elastic scattering of WIMPs off the target nuclei
Summary
An increasing number of astrophysical and astronomical observations points to the existence of a non luminous, non baryonic and cold (i.e. non relativistic) matter component of the Universe, called Cold Dark Matter (CDM) [1,2,3]. The Dark Matter particles are still undetected, but they have to belong to a category beyond the Standard Model; the most appealing and interesting candidates are the so called Weakly Interactive Massive Particles (WIMPs) predicted by Supersymmetric theories (SUSY), models with extra dimensions and little Higgs models [4,5,6]. Among the latter category, the XENON project is one of the most promising: after the results of a first 10 kg scale prototype, XENON10 [7], the second generation experiment (XENON100, the results of which are presented here) has been running since 2009 and successfully achieved its initial aim of improving the sensitivity by a factor ∼ 50 with respect to XENON10. While XENON100 is still running, XENON1T is currently in advanced phase of construction at Laboratori Nazionali del Gran Sasso in Italy
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