Bulletin of the American Physical Society
2018 Annual Meeting of the APS Mid-Atlantic Section
Volume 63, Number 20
Friday–Sunday, November 9–11, 2018; College Park, Maryland
Session G04: Nuclear Physics II |
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Chair: Florian Hauenstein, Old Dominion University Room: Edward St. John 2309 |
Saturday, November 10, 2018 4:00PM - 4:36PM |
G04.00001: Neutrinoless Double Beta Decay Invited Speaker: Michelle J Dolinski Tiny, weakly interacting neutrinos are difficult to study in the laboratory, but studying neutrinos can give us a better understanding of the origin and structure of the universe. In particular, the study of neutrino mass is a direct probe into new physics. It is an experimentally open question whether or not neutrinos have distinct antiparticle states, and the answer is directly related to the origin of neutrino mass. The observation of neutrinoless double beta decay, a non-Standard Model version of a rare nuclear process, would prove that neutrinos are their own antiparticles. I will report on the status and recent results of current searches, as well as plans for the next generation of neutrinoless double beta decay experiments. |
Saturday, November 10, 2018 4:36PM - 4:48PM |
G04.00002: Detecting CP Violation in the Presence of Non-Standard Neutrino Interactions Jeffrey M Hyde New physics beyond the Standard Model could appear at long baseline oscillation experiments as non-standard interactions (NSI) between neutrinos and matter. This would make determination of the CP-violating phase δ13 ambiguous due to interference with additional complex phases in the mixing matrix. In this talk I'll show how the CP phase degeneracies are visualized on biprobability plots, and how degeneracies and their breaking can be understood based on a perturbative expansion. I'll apply this to experimental hints that suggest δ13 ∼ -π/2, which could also be consistent with δ13, δeτ = 0, π for large εeτ, and I'll show how both the longer baseline and broader energy spectrum of DUNE can help distinguish these cases.
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Saturday, November 10, 2018 4:48PM - 5:00PM |
G04.00003: Solid Xenon Bolometers Philip Weigel, Michelle J Dolinski, Erin Hansen Cryogenic liquid noble detectors have become an attractive option for exploring beyond the standard model physics. Current experiments are using these detectors to search for dark matter interactions, neutrinoless double beta decay, and other phenomena. Improved energy resolution can be leveraged from being able to read out two energy channels: ionization and scintillation. Experimentally, a microscopic anti-correlation behavior between these signals has been observed that has not been described from first principles. Solid xenon bolometers, under development at Drexel University, would be able to detect heat signals in addition to ionization and scintillation. By making measurements in all three channels, these bolometers may provide useful information about the microscopic anti-correlation phenomenon in detector energy response. |
Saturday, November 10, 2018 5:00PM - 5:36PM |
G04.00004: Neutrinos from Nuclear Reactors Invited Speaker: Pieter Mumm Nuclear reactors are one of the most intense, pure, and controllable sources of neutrinos available. As a result, reactor neutrinos have been an important tool for both discovery and precision measurement in our evolving understanding of fundamental physics. Over the last several decades, reactors were central to the discovery of neutrinos and played a significant role in our understanding neutrino oscillation. We are now entering an era of precision measurement. At the same time reactor experiments have brought to light puzzling discrepancies between theoretical expectations and measurement. These hint at problems with the nuclear physics of reactor models or perhaps even additional physics beyond the Standard Model of particle physics. This talk will tell this story. |
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