We report the first results of DarkSide-50, a direct search for dark matter operating in the un- derground Laboratori Nazionali del Gran Sasso (LNGS) and searching for the rare nuclear recoils possibly induced by weakly interacting massive particles (WIMPs). The dark matter detector is a Liquid Argon Time Projection Chamber with a ( 46.4 0.7 ) kg active mass, operated inside a 30 t or- ganic liquid scintillator neutron veto, which is in turn installed at the center of a 1 kt water Cherenkov veto for the residual flux of cosmic rays. We report here the null results of a dark matter search for a ( 1422 67 ) kg d exposure with an atmospheric argon fill. This is the most sensitive dark matter search performed with an argon target, corresponding to a 90% CL upper limit on the WIMP-nucleon spin-independent cross section of 6.1 10

P., A., 1 T., A., 2 A., A., 3 K., A., 4 H. O., B., 5 B., B., et al. (2014). First Results from the DarkSide-50 Dark Matter Experiment at Laboratori Nazionali del Gran Sasso. In APC. Paris : P. Agnes.

First Results from the DarkSide-50 Dark Matter Experiment at Laboratori Nazionali del Gran Sasso

MARI, Stefano Maria;
2014-01-01

Abstract

We report the first results of DarkSide-50, a direct search for dark matter operating in the un- derground Laboratori Nazionali del Gran Sasso (LNGS) and searching for the rare nuclear recoils possibly induced by weakly interacting massive particles (WIMPs). The dark matter detector is a Liquid Argon Time Projection Chamber with a ( 46.4 0.7 ) kg active mass, operated inside a 30 t or- ganic liquid scintillator neutron veto, which is in turn installed at the center of a 1 kt water Cherenkov veto for the residual flux of cosmic rays. We report here the null results of a dark matter search for a ( 1422 67 ) kg d exposure with an atmospheric argon fill. This is the most sensitive dark matter search performed with an argon target, corresponding to a 90% CL upper limit on the WIMP-nucleon spin-independent cross section of 6.1 10
2014
P., A., 1 T., A., 2 A., A., 3 K., A., 4 H. O., B., 5 B., B., et al. (2014). First Results from the DarkSide-50 Dark Matter Experiment at Laboratori Nazionali del Gran Sasso. In APC. Paris : P. Agnes.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11590/184382
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