Bulletin of the American Physical Society
78th Annual Meeting of the Southeastern Section of the APS
Volume 56, Number 9
Wednesday–Saturday, October 19–22, 2011; Roanoke, Virginia
Session HD: Neutrinos |
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Chair: Leo Piilonen, Virginia Polytechnic Institute and State University Room: Crystal Ballroom DE |
Friday, October 21, 2011 10:45AM - 11:15AM |
HD.00001: $\theta_{13}$ and Beyond Invited Speaker: I will briefly review the current status of neutrino oscillation and highlight the open issues. The current generation of neutrino experiments Double Chooz, Daya Bay, T2K and NO$\nu$A have started to probe $\theta_{13}$ and soon will deliver a first measurement. However, they can not test the mass hierarchy or study leptonic CP violation, therefore even larger facilities are needed. I will present the underlying physics and the various different proposals in detail. [Preview Abstract] |
Friday, October 21, 2011 11:15AM - 11:45AM |
HD.00002: The T2K Experiment Invited Speaker: The T2K experiment is designed to study neutrino oscillation. In particular, it is designed to measure the final, previously unmeasured oscillation mixing angle, known as $\theta_{13}$. This mixing angle is responsible for allowing muon neutrinos to oscillate to electron neutrinos. T2K features a nearly pure beam of muon neutrinos, produced at the J-PARC accelerator complex in Tokai, on the East coast of Japan. This beam travels 295 km through the earth, and emerges at the Super-Kamiokande detector, in the mountains in Western Japan, where the neutrinos are detected. At this far detector, the appearance of electron neutrinos from the $\nu_{\mu}$ beam can indicate non-zero $\theta_{13}$. Six electron neutrino candidate events were observed at Super-Kamiokande, with an expected background of 1.5. The probability of observing six or more events from just background is just 0.7\%. [Preview Abstract] |
Friday, October 21, 2011 11:45AM - 12:15PM |
HD.00003: The MINOS and NOvA Experiments Invited Speaker: Massive neutrinos provide the first hints at physics beyond the standard model. Current and future neutrino experiments aim to further refine our understanding of neutrino mixing, one of the implications of neutrino mass. Two of these experiments, MINOS and NOvA, are long-baseline neutrino oscillation experiments in the Fermilab NuMI neutrino beam line. Both the currently running MINOS experiment, and the future NOvA experiment, employ two detectors, hundreds of km apart. Comparisons of the energy spectra and beam composition at the two sites yield precision measurements of neutrino oscillations for L/E$\sim$500 km/GeV. In this talk, I will describe the two experiments, presenting updated measurements from MINOS on the probability of muon-neutrino and antineutrino disappearance as a function of energy. I will report on the MINOS measurement of neutral current interaction rates in each detector, which enables a search for light neutrino families that do not couple via the weak interaction, and I will also discuss the latest results from the search for electron-neutrino events in the MINOS Far Detector, which probes the value of the mixing angle $\theta_{13}$. Finally, I will discuss the goals and status of the NOvA experiment. [Preview Abstract] |
Friday, October 21, 2011 12:15PM - 12:45PM |
HD.00004: Neutrino Oscillations with the Daya Bay Reactor Neutrino Experiment Invited Speaker: The last unknown neutrino mixing matrix element, $\theta_{13}$, holds the key to lepton based CP violation and to determining the ordering of the neutrino mass states. The Daya Bay Reactor Neutrino Experiment, which has just started to take data will have the best reach in $\theta_{13}$ sensitivity for the next decade. The experiment will be discussed, including current status and future prospects. [Preview Abstract] |
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