Bulletin of the American Physical Society
2010 Fall Meeting of the APS Division of Nuclear Physics
Volume 55, Number 14
Tuesday–Saturday, November 2–6, 2010; Santa Fe, New Mexico
Session CD: Mini-symposium on Neutrino Scattering and Oscillations |
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Chair: Geoff Mills, Los Alamos National Laboratory Room: Sweeny D |
Thursday, November 4, 2010 8:30AM - 9:06AM |
CD.00001: MiniBooNE Antineutrino Oscillation Results and Implications for the Future Invited Speaker: The MiniBooNE experiment at Fermilab reports results from a
search for $\bar \nu_\mu \rightarrow \bar \nu_e$ oscillations,
using a data sample corresponding to $5.66 \times 10^{20}$ protons
on target. An excess of events is observed which, when constrained
by the observed $\bar \nu_\mu$ events,
has a probability for consistency
with the background-only hypothesis of 0.5\% in the
oscillation-sensitive
energy range of $475 |
Thursday, November 4, 2010 9:06AM - 9:18AM |
CD.00002: Testing the LSND/MiniBooNE Signal with OscSNS and BooNE Richard Van de Water, Geoff Mills, Bill Louis With the recent announcement from MiniBooNE of an antineutirino event excess consistent with LSND oscillations, it becomes prudent to further study the claimed signal. This can be done with an experiment at the Spallation Neutron Source, which is a stop pion neutrino source similar to LAMPF, but with higher intensity and shorter duty cycle. A 1kton oil detector at 60 m from the source could reproduce the LSND signal at over 5 $\sigma$ in one year of running. Another possibility is a second MiniBooNE detector at FNAL that is at 200 m from the neutrino source, compared with the current detector at 500 m. This would allow convincing test for neutrino oscillations in both neutrino and antineutrino mode at a near detector position. The physics reach and the pros and cons of each proposal will be discussed. [Preview Abstract] |
Thursday, November 4, 2010 9:18AM - 9:30AM |
CD.00003: Neutrino Scattering Measurements with MiniBooNE Rex Tayloe The MiniBooNE experiment at Fermilab has collected the world's largest sample of neutrino and antineutrino scattering events in the 1 GeV energy region. The sample includes charged- and neutral-current interactions from quasielastic and resonant channels. Recent results are confronting existing models for neutrino scattering on light nuclei. These results will be presented along with the latest interpretations. [Preview Abstract] |
Thursday, November 4, 2010 9:30AM - 9:42AM |
CD.00004: Finding $\theta_{13}$ with Solar Neutrino Data Annelise Malkus We analyze recent solar neutrino data in the context of three flavor neutrino oscillation to understand the value of $\theta_{13}$. [Preview Abstract] |
Thursday, November 4, 2010 9:42AM - 9:54AM |
CD.00005: The MINERvA Neutrino Scattering Experiment Trung Le MINERvA is a neutrino scattering experiment at the NuMI beamline of FNAL which began data taking in fall 2009. MINERvA is a high resolution, fully active detector designed to study the interaction of neutrinos with nuclei. The active volume of the detector consists of 3 tons of plastic scintillator. In addition, targets of 4He, C, H2O, Fe, and Pb will allow detailed studies of the A dependence of neutrino cross sections. Some of the objectives of MINERvA are to measure the axial form factor of the neutron with unprecedented precision, measure nuclear shadowing of F2 and compare with muon scattering, study quark-hadron duality with neutrino scattering in comparison with electron scattering, and measure coherent pion production. We present an overview of the physics objectives, estimated uncertainties of the measurements, along with a description of the detector and a sample of the first measurements. [Preview Abstract] |
Thursday, November 4, 2010 9:54AM - 10:06AM |
CD.00006: The SNO+ Experiment Jeffery Secrest The Sudbury Neutrino Observatory has removed the heavy water from the detector. The SNO+ experiment will add liquid scintillator to this detector in order to enhance sensitivity to different low energy phenomena such as pep and CNO solar neutrinos, reactor anti-neutrinos, and geo-neutrinos. Doping the scintillator with neodymium will allow SNO+ to carry out a competitive search for neutrinoless double beta decay. The physics and current status of the experiment will be presented. [Preview Abstract] |
Thursday, November 4, 2010 10:06AM - 10:18AM |
CD.00007: Three-flavor collective oscillations of supernova neutrinos Alexander Friedland Coherent forward scattering of neutrinos off each other leads to complex collective neutrino oscillations inside a supernova. We explore this phenomenon during the cooling stage of the explosion. Two- and three-flavor calculations of the oscillations are shown to give strikingly different results, especially for the inverted mass hierarchy. Analysis shows that the 2-flavor evolution trajectory can be unstable in the 3-flavor space. Additionally, the 3-flavor evolution is shown to be partially non-adiabatic, resulting in a ``mixed'' spectrum. Our results could impact the interpretation of the future galactic supernova signal, the analysis of the r-process nucleosynthesis, and the predictions of the diffuse supernova neutrino background. Based on Phys. Rev. Lett. 104:191102 (2010). [Preview Abstract] |
Thursday, November 4, 2010 10:18AM - 10:30AM |
CD.00008: Optical Systems for MicroBooNE Benjamin Jones MicroBooNE is a 170 ton liquid argon TPC neutrino experiment which is planned to begin running at Fermilab in 2012. As well as measuring charge deposited by ionizing particles in the TPC volume, the experiment will measure the light produced by scintillating charged particles in the liquid argon. The MicroBooNE optical systems comprise of two rows of PMT's mounted behind wavelength shifting plates and will form a component of both the triggering and reconstruction processes. A significant R{\&}D program to optimize the layout, manufacturing methods and simulation algorithms for the MicroBooNE optical systems is underway. I will present on the current status of all three aspects. [Preview Abstract] |
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