Dr
Saori UMEHARA
(Osaka University)
9/12/13, 4:00 PM
Double Beta Decay
Oral
CANDLES is the project to search for neutrino-less double beta
decay (0$\nu\beta\beta$) of $^{48}$Ca.
0$\nu\beta\beta$ is acquiring great interest
after the confirmation of neutrino oscillation
which demonstrated nonzero neutrino mass.
Measurement of 0$\nu\beta\beta$ provides a test for the Majorana
nature of neutrinos
and gives an absolute scale of the effective neutrino mass.
In...
Mathieu Bongrand
(Orsay, LAL)
9/12/13, 4:20 PM
Double Beta Decay
Oral
The NEMO-3 experiment located in the Modane Underground Laboratory researched the neutrinoless double beta decay from 2003 to 2011. Seven isotopes were studied with the unique tracko-calo technique including the 2 most important in term of sensitivity with 7kg of 100Mo and 1kg of 82Se. No evidence for neutrinoless double beta decay has been observed but the limits set on the effective neutrino...
Prof.
Alexander Barabash
(ITEP)
9/12/13, 4:40 PM
Double Beta Decay
Oral
Double beta decay of 100Mo to the excited states of daughter nuclei has been studied using a 600 cm3 low-background HPGe detector and an external source consisting of 2588 g of 97.5% enriched metallic 100Mo, which was formerly inside the NEMO-3 detector and used for the NEMO-3 measurements of 100Mo. The half-life for the two-neutrino double beta decay of 100Mo to the excited 0+1 state in 100Ru...
Dr
Hidekazu Kakuno
(Tokyo Metropolitan University)
9/12/13, 5:00 PM
Double Beta Decay
Oral
Drift Chamber Beta-ray Analyzer (DCBA) experiment is a double beta decay experiment that uses drift chambers as the detector of beta-rays. Two beta-rays are emitted from Mo-100 (or Nd-150 in future) contained in a thin source plate that is placed between two drift chambers.
By measuring helical trajectories of two beta-rays using drift chambers, one can extract full kinematics of a double...
Prof.
Fedor Simkovic
(Comenius U. and JINR Dubna)
9/12/13, 5:20 PM
Double Beta Decay
Oral
Nuclear physics is important for extracting useful information from the neutrinoless double beta decay data. Interpreting existing results as a measurement of efective Majorana neutrino mass depends crucially on the knowledge of the corresponding nuclear matrix elements (NMEs) that govern the decay rate. The NMEs for neutrinoless double beta decay must be evaluated using tools of nuclear...
