Bulletin of the American Physical Society
2007 APS April Meeting
Volume 52, Number 3
Saturday–Tuesday, April 14–17, 2007; Jacksonville, Florida
Session R4: Neutrinos II |
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Sponsoring Units: DPF Chair: Karsten Heeger, University of Wisconsin-Madison Room: Hyatt Regency Jacksonville Riverfront Grand 3 |
Monday, April 16, 2007 10:45AM - 11:21AM |
R4.00001: Recent Results from the MINOS Experiment Invited Speaker: MINOS is a long baseline neutrino oscillation experiment designed to make precision measurements of the neutrino mixing parameters associated with the atmospheric neutrino mass splitting. Using a high powered neutrino beam from the Main Injector (NuMI) facility at Fermilab, it compares the neutrino energy spectrum for charged current muon neutrino interactions observed in two large detectors located at Fermilab and in the Soudan mine in northern Minnesota at a distance of 735~km. We present the $\nu_{\mu}$ disappearance analysis of the final data set from the first year of data corresponding to $1.27\times 10^{20}$~protons on target. In June 2006 MINOS started its second year of data-taking and as of now it has accumulated over $2\times 10^{20}$~protons on target, the largest sample of neutrino interactions collected to date, current status and performance will be presented. [Preview Abstract] |
Monday, April 16, 2007 11:21AM - 11:57AM |
R4.00002: NOvA and its Competitors Invited Speaker: The NOvA experiment at Fermilab will conduct precise measurement of neutrino mass and mixing. The experiment will employ an upgraded main-injector neutrino beam. NOvA will conduct an incisive search for 1st-to-3rd generation neutrino mixing; and, will, using the antineutrino beam, extend the search for CP-violation in the lepton sector. Unique to NOvA is the determination of the neutrino mass hierarchy. We will contast the Physics reach of NOvA with the K2K (JPARC) project, and with the proposed reactor experiments. [Preview Abstract] |
Monday, April 16, 2007 11:57AM - 12:33PM |
R4.00003: Neutrino Oscillation Search at MiniBooNE Invited Speaker: MiniBooNE has searched for $\nu_\mu \rightarrow \nu_e$ oscillations in the high-$\Delta m^2$ region suggested by the LSND result. If confirmed to be the result of neutrino oscillations, LSND is not compatible with other oscillation results in a model with only three neutrino masses. In addition, MiniBooNE is sensitive to many neutrino and antineutrino cross-section modes that have not been measured precisely by previous groups. All current results from the experiment will be presented. [Preview Abstract] |
Monday, April 16, 2007 12:33PM - 12:45PM |
R4.00004: The MiniBooNE Oscillation Fit Result Heather Ray The LEP measurement of the Z boson width indicates that there exists three light neutrinos. Neutrino oscillations, observed and confirmed for both solar and atmospheric neutrinos, are permitted in this scheme. The LSND observation of accelerator neutrino oscillations at high $\triangle \mathrm{m}^2$, however, is not permitted in a model which only contains three neutrino types. MiniBooNE, located at Fermi National Laboratory, is an experiment designed to to refute or confirm the LSND oscillation result. MiniBooNE will look for oscillations of $\nu_{\mu} \rightarrow \nu_{e}$ in a closed-box appearance analysis. This talk will focus on the status of oscillation fits performed on the entire neutrino data set. [Preview Abstract] |
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