Author/Authors :
R. Bernabei، نويسنده , , P. Belli، نويسنده , , F. Cappella، نويسنده , , R. Cerulli، نويسنده , , F. Montecchia، نويسنده , , A. Incicchitti، نويسنده , , D. Prosperi، نويسنده , , C.J. Dai، نويسنده ,
Abstract :
New results have been obtained by investigating the neutrinoless ββ decay in 134Xe deep underground at the Gran Sasso National Laboratory of INFN by means of the ≃6.5 kg liquid xenon setup of the DAMA experiment. New limits on the half-lives of the β−β−0ν(0+→0+) and β−β−0ν(0+→2+) decay modes have been obtained. They are: T1/2>5.8×1022 yr (90% C.L.) and T1/2>2.6×1022 yr (90% C.L.), respectively. The T1/2 limit for β−β−0ν(0+→0+) process is about three orders of magnitude higher than the one previously available, while the T1/2 limit for β−β−0ν(0+→2+) has been set for the first time.
