Author/Authors :
A. Alessandrello، نويسنده , , C. Brofferio، نويسنده , , D.V. Camin، نويسنده , , P. Caspani، نويسنده , , P. Colling، نويسنده , , O. Cremonesi، نويسنده , , E. Fiorini، نويسنده , , A. Giuliani، نويسنده , , A. Nucciotti، نويسنده , , M. M. Pavan، نويسنده , , G. Pessina، نويسنده , , E. Previtali، نويسنده , , L. Zanotti، نويسنده , , C. Bucci، نويسنده ,
Abstract :
During a Double Beta Decay experiment performed at Laboratori Nazionali del Gran Sasso, a 1548 hours background spectrum was collected with a 340 g TeO2 thermal detector. An analysis of this spectrum has been carried out to search for possible WIMP signals. The values for parameters which are essential in the search for WIMPs, like energy resolution (2 keV), energy threshold (13 keV) and nuclear recoil quenching factor (≥ 0.93) have been experimentally determined and are discussed in detail. The spectrum of recoils induced by α decays has been directly observed for the first time in coincidence with the α particle pulse. Preliminary limits on the spin-independent cross sections of WIMPs on Te and O nuclei have been obtained.
