Double beta decay of 150Nd to the first 0+ excited level of 150Sm

2021 ◽  
Vol 96 (8) ◽  
pp. 085302
Author(s):  
O G Polischuk ◽  
A S Barabash ◽  
P Belli ◽  
R Bernabei ◽  
R S Boiko ◽  
...  
Keyword(s):  
Beta Decay ◽  
Excited Level ◽  
Double Beta Decay

scholarly journals New limits on double-beta decay of $$^{190}$$Pt and $$^{198}$$Pt

2022 ◽  
Vol 82 (1) ◽  
Author(s):  
F. A. Danevich ◽  
M. Hult ◽  
A. Junghans ◽  
D. V. Kasperovych ◽  
B. N. Kropivyansky ◽  
...  
Keyword(s):  
Beta Decay ◽  
Inductively Coupled Plasma ◽  
Excited Level ◽  
Double Beta Decay ◽  
Inductively Coupled ◽  
Hpge Detectors ◽  
Order Of Magnitude ◽  
Plasma Mass Spectrometry ◽  
Lower Limits ◽  
First Time

AbstractA search for double-beta decay of $$^{190}$$ 190 Pt and $$^{198}$$ 198 Pt with emission of $$\gamma $$ γ -ray quanta was realized at the HADES underground laboratory with a 148 g platinum sample measured by two ultralow-background HPGe detectors over 8946 h. The isotopic composition of the platinum sample has been measured with high precision using inductively coupled plasma mass spectrometry. New lower limits for the half-lives of $$^{190}$$ 190 Pt relative to different channels and modes of the decays were set on the level of $$\lim T_{1/2}\sim 10^{14}$$ lim T 1 / 2 ∼ 10 14 –$$10^{16}$$ 10 16 year. A possible exact resonant $$0\nu KN$$ 0 ν K N transition to the 1,2 1326.9 keV level of $$^{190}$$ 190 Os is limited for the first time as $$T_{1/2} \ge 2.5 \times 10^{16}$$ T 1 / 2 ≥ 2.5 × 10 16 year. A new lower limit on the double-beta decay of $$^{198}$$ 198 Pt to the first excited level of $$^{198}$$ 198 Hg was set as $$T_{1/2} \ge 3.2\times 10^{19}$$ T 1 / 2 ≥ 3.2 × 10 19 year, one order of magnitude higher than the limit obtained in the previous experiment.

scholarly journals Hiding neutrinoless double beta decay in the minimal seesaw mechanism

2021 ◽  
Vol 103 (1) ◽  
Author(s):  
Takehiko Asaka ◽  
Hiroyuki Ishida ◽  
Kazuki Tanaka
Keyword(s):  
Beta Decay ◽  
Neutrinoless Double Beta Decay ◽  
Double Beta Decay ◽  
Seesaw Mechanism

scholarly journals Role of Single-Particle Energies in Microscopic Interacting Boson Model Double Beta Decay Calculations

Universe ◽  
2021 ◽  
Vol 7 (3) ◽  
pp. 66
Author(s):  
Jenni Kotila
Keyword(s):  
Beta Decay ◽  
Single Particle ◽  
Field Potential ◽  
Double Beta Decay ◽  
Interacting Boson Model ◽  
Model Calculations ◽  
Single Particle Level ◽  
Particle Level ◽  
Boson Model

Single-particle level energies form a significant input in nuclear physics calculations where single-particle degrees of freedom are taken into account, including microscopic interacting boson model investigations. The single-particle energies may be treated as input parameters that are fitted to reach an optimal fit to the data. Alternatively, they can be calculated using a mean field potential, or they can be extracted from available experimental data, as is done in the current study. The role of single-particle level energies in the microscopic interacting boson model calculations is discussed with special emphasis on recent double beta decay calculations.

scholarly journals Flavored neutrinoless double beta decay

2021 ◽  
Vol 103 (5) ◽  
Author(s):  
Lukas Graf ◽  
Sudip Jana ◽  
Manfred Lindner ◽  
Werner Rodejohann ◽  
Xun-Jie Xu
Keyword(s):  
Beta Decay ◽  
Neutrinoless Double Beta Decay ◽  
Double Beta Decay

scholarly journals Two-neutrino double beta decay with sterile neutrinos

2021 ◽  
Vol 103 (5) ◽  
Author(s):  
Patrick D. Bolton ◽  
Frank F. Deppisch ◽  
Lukáš Gráf ◽  
Fedor Šimkovic
Keyword(s):  
Beta Decay ◽  
Double Beta Decay ◽  
Sterile Neutrinos
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