Author/Authors :
Ishihara، نويسنده , , N. and Inagaki، نويسنده , , T. and Ohama، نويسنده , , T. and Omata، نويسنده , , K. and Takeda، نويسنده , , S. Narita-Yamada، نويسنده , , Y. and Emura، نويسنده , , T. and Itoh، نويسنده , , R. and Kato، نويسنده , , Y. and Sakamoto، نويسنده , , Y. and Shimada، نويسنده , , K. and Tamura، نويسنده , , N. and Kitamura، نويسنده , , S.، نويسنده ,
Abstract :
A detector called Drift Chamber Beta-ray Analyzer (DCBA) will provide momentum information of each β-ray in double beta decay. The DCBA is expected to have good capabilities for particle identification, detection efficiency, background elimination and decay-source integration. Under the assumption of mass mechanism dominance in neutrinoless double beta decay, a simulation study shows that a combination method using both sum and single-energy distributions of double beta decay events can separate 0ν- and 2ν-events down to 0.05 eV of the effective neutrino mass with the help of a calculated nuclear matrix element, even though the DCBA has relatively poor energy resolution.
