Bulletin of the American Physical Society
2017 Fall Meeting of the APS Division of Nuclear Physics
Volume 62, Number 11
Wednesday–Saturday, October 25–28, 2017; Pittsburgh, Pennsylvania
Session NE: Recent Results From and Future Prospects for Neutrinoless Double-Beta Decay Searches |
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Chair: Diana Parno, Carnegie Mellon University Room: Salon 5 |
Saturday, October 28, 2017 8:30AM - 9:06AM |
NE.00001: The $^{76}$Ge Program to Search for Neutrinoless Double-Beta Decay Invited Speaker: Vincente Guiseppe Neutrinoless double-beta decay searches play a major role in determining the nature of neutrinos, the existence of a lepton violating process, and the effective Majorana neutrino mass. The {\sc Majorana} and {\sc Gerda} Collaborations are operating arrays of high purity Ge detectors to search for neutrinoless double-beta decay in $^{76}$Ge. The {\sc Majorana} {\sc Demonstrator} is operating at the Sanford Underground Research Facility in South Dakota while the {\sc Gerda} experiment is operating at LNGS in Italy. The {\sc Gerda} and {\sc Majorana} {\sc Demonstrator} experiments have achieved the lowest backgrounds in the neutrinoless double-beta decay region of interest. These results, coupled with the superior energy resolution (0.1\%) of Ge detectors demonstrate that $^{76}$Ge is an ideal isotope for a large next generation experiment. The LEGEND collaboration, with 220 members from 47 institutions around the world, has been formed to pursue a ton scale $^{76}$Ge experiment. Building on the successes of {\sc Gerda} and {\sc Majorana}, the LEGEND collaboration aims to develop a phased neutrinoless double-beta decay experimental program with discovery potential at a half-life significantly longer than $10^{27}$ years. This talk will present the initial results from the {\sc Majorana} {\sc Demonstrator} and {\sc Gerda} experiments and the plan for the LEGEND program. [Preview Abstract] |
Saturday, October 28, 2017 9:06AM - 9:42AM |
NE.00002: Double-beta Decay Searches in $^{130}$Te Invited Speaker: Lindley Winslow The neutrino is unique among the Standard Model fermions. It is the only one that could be its own antiparticle, a Majorana particle. A Majorana neutrino would acquire mass in a fundamentally different way than the other particles and this would have profound consequences to particle physics and cosmology. The only feasible experiments to determine the Majorana nature of the neutrino are searches for the rare nuclear process neutrinoless double-beta decay. $^{130}$Te is an attractive isotope for these experiments because of its high natural abundance. These are very difficult experiments and it is still not clear which techniques are the best to pursue. The CUORE and SNO+ experiments are excellent examples of the range of techniques that can be pursued while using the same isotope. In this talk, I will present the latest results from these experiments. [Preview Abstract] |
Saturday, October 28, 2017 9:42AM - 10:18AM |
NE.00003: Searches for neutrinoless double beta decay with Xe-136 Invited Speaker: David Moore Xenon-136 provides a promising candidate isotope for observing neutrinoless double beta decay ($0\nu\beta\beta$) given its relatively high natural abundance, ease of enrichment, and ability to be employed in a variety of detection technologies. I will review the status and plans for current and future searches for $0\nu\beta\beta$ using Xe-136, including the EXO, KamLAND-Zen, NEXT, and PandaX experiments. These searches currently provide some of the most sensitive existing constraints on $0\nu\beta\beta$, while next-generation searches using Xe-136 will substantially improve sensitivity as these technologies are extended to the ton-scale and beyond. [Preview Abstract] |
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