Bulletin of the American Physical Society
APS April Meeting 2019
Volume 64, Number 3
Saturday–Tuesday, April 13–16, 2019; Denver, Colorado
Session D10: Tonne Scale Neutrinoless Double Beta Decay R&D I
3:30 PM–5:18 PM,
Saturday, April 13, 2019
Sheraton
Room: Governor's Square 12
Sponsoring
Units:
DNP DPF
Chair: Alfredo Galindo-Uribarri, Oak Ridge National Laboratory
Abstract: D10.00007 : First limit on neutrinoless quadruple beta decay of 150Nd to the 0+1 state of 150Gd*
5:06 PM–5:18 PM
View Presentation Abstract
Presenter:
Mary F Kidd
(Tennessee Technological University)
Authors:
Mary F Kidd
(Tennessee Technological University)
Werner Tornow
(Duke University)
If the neutrino is a Dirac particle, then observation of lepton number violation via detection of neutrinoless double beta decay is not viable. One potential lepton-number violating process that occurs even if the neutrino is a Dirac particle is neutrinoless quadruple beta (0ν4β) decay. However, the number of nuclei that can undergo 0ν4β-decay is limited; one of these nuclei is 150Nd. In 2017, NEMO-3 reported the first search for 0ν4β-decay of 150Nd to the ground state [1]. Here, we report the first half-life limit of the 0ν4β-decay to the excited 0+1 state of 150Gd. We searched for 0ν4β-decay events to excited final states of 150Gd by detecting the de-excitation gamma rays of the daughter nucleus in coincidence. The enriched Nd2O3 sample consisted of 40.33 ± 0.02 g 150Nd and was observed for 642.8 days at the Kimballton Underground Research Facility. A half-life limit for the decay to the 0+1 state of 150Gd was found to be T1/2 > 1.76 × 1020 years (90% CL). Though the predicted half life of this decay is many orders of magnitude larger, constraining this value experimentally is vital to check for potential enhancements to the decay rate.
[1] https://arxiv.org/abs/1705.08847
*DE-FG02-97ER41033
Follow Us |
Engage
Become an APS Member |
My APS
Renew Membership |
Information for |
About APSThe American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics. |
© 2024 American Physical Society
| All rights reserved | Terms of Use
| Contact Us
Headquarters
1 Physics Ellipse, College Park, MD 20740-3844
(301) 209-3200
Editorial Office
100 Motor Pkwy, Suite 110, Hauppauge, NY 11788
(631) 591-4000
Office of Public Affairs
529 14th St NW, Suite 1050, Washington, D.C. 20045-2001
(202) 662-8700