Bulletin of the American Physical Society
2006 APS April Meeting
Saturday–Tuesday, April 22–25, 2006; Dallas, TX
Session E12: Neutrino Oscillations and Cross Sections |
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Sponsoring Units: DPF Chair: Petr Vogel, California Institute of Technology Room: Hyatt Regency Dallas Cumberland F |
Saturday, April 22, 2006 3:30PM - 3:42PM |
E12.00001: The MIPP experiment and its application to neutrino beam simulations Andrew Godley The Main Injector Particle Production experiment (E907) at Fermilab measures particle production from nuclear targets using a tagged secondary beam of p, K and $\pi$ with momenta 5 to 80~GeV/c and a primary proton beam of 120~GeV/c. The experiment comprises a large acceptance spectrometer for tracking and a combination of dE/dx, ToF, threshold and ring-imaging Cerenkov techniques for particle identification over the full range of the final state parameters. The MIPP data has applications in Nuclear Physics, meson spectroscopy, and neutrino beam calculations for K2K, MINOS, miniBooNE, T2K and NOvA. This talk will describe MIPP, its dataset, which has just finished collection, and highlight its application to reducing the main source of neutrino beam systematic error: hadron production. A possible upgrade to MIPP by speeding up its electronics will be mentioned. [Preview Abstract] |
Saturday, April 22, 2006 3:42PM - 3:54PM |
E12.00002: Neutrino Neutral Current Cross Section Measurement in NOMAD Qun Wu Current and future neutrino oscillation experiments (eg NOvA) require a much better understanding of the neutrino neutral current cross section. NOMAD, a former neutrino oscillation experiment, has the largest high resolution neutrino nucleon scattering data sample available. The effort towards this cross section measurement will be presented, in particular the likelihood method used to select the neutral current events. [Preview Abstract] |
Saturday, April 22, 2006 3:54PM - 4:06PM |
E12.00003: Measurement of Neutrino Induced Quasi-Elastic Cross Section Jae Kim The measurement of the weak mixing angle is the goal, using the data collected in the NOMAD experiment at CERN. Studying the neutrino induced Quasi-Elastic (QE) scattering, in which neutrino hits neutron and results in a muon and a proton, would enhance our understanding of the `higher-twist effect' -- an effect that parameterizes the weak mixing angle. Toward this, I developed a likelihood probability density function that enabled me to eliminate a significant portion of the background, resonance and deep inelastic scattering events. As the Monte Carlo (MC) is only reliable to a precision not better than 15 -- 20 percent, I developed several techniques to make sure that MC and DATA agreed around 5 percent. The axial mass and QE cross section can then be calculated. Techniques and the preliminary results relevant to the calculation will be presented. [Preview Abstract] |
Saturday, April 22, 2006 4:06PM - 4:18PM |
E12.00004: Neutrino Cross Sections at MiniBooNE Zelimir Djurcic The MiniBooNE (Booster Neutrino Experiment) neutrino oscillation experiment collected the world's largest sample of charged current quasi-elastic, charged current $\pi^{+}$, and neutral current $\pi^{0}$ events in 0.1 to a few GeV region. The data are used to measure neutrino cross section on carbon. The results are important to understanding the event rates and backgrounds in the oscillation analysis. A summary of the cross section studies will be presented. [Preview Abstract] |
Saturday, April 22, 2006 4:18PM - 4:30PM |
E12.00005: Constraining intrinsic $\nu_e$ events in the MiniBooNE beam Kendall Mahn MiniBooNE is a short baseline neutrino experiment at Fermilab looking for $\nu_{\mu} \rightarrow \nu_e$ oscillations in the region of the LSND signal. The neutrino beam is 99\% pure muon flavor neutrinos from pion and kaon decays, however, kaons in the beam also decay to produce electron neutrinos. These ``intrinsic'' electron neutrinos are an important background to the electron neutrino appearance search. This talk will present how MiniBooNE constrains the number of kaons in the beam, and the number of ``intrinsic'' electron neutrino events. [Preview Abstract] |
Saturday, April 22, 2006 4:30PM - 4:42PM |
E12.00006: CCpi0 events at MiniBooNE Laura Jeanty Charged current neutral pion events are the fourth largest exclusive sample of neutrino interactions at MiniBooNE, constituting about 4\% of total neutrino interactions. The study of this sample is interesting in several respects. First, at MiniBooNE energies ($\sim1$GeV) the cross section is known with only modest precision. Second, there is no coherent cross- section in this channel, and therefore the low $Q^2$ behavior differs from that of the CC$\pi^+$ channel. Finally, if one wants to use CC$\pi^+$ events for $\nu_e$ appearance studies, CC$\pi^0$ events are a large background. The study of this data sample in MiniBooNE is complicated by the fact that a full kinematic reconstruction requires simultaneously reconstructing three Cherenkov rings. We will report on the recent progress in the reconstruction and study of these events. [Preview Abstract] |
Saturday, April 22, 2006 4:42PM - 4:54PM |
E12.00007: MINERvA High-Statistics Neutrino-Nucleus Scattering using a Fine-grained Detector Minsuk Kim The extremely intense NuMI neutrino beam at Fermilab, constructed for the MINOS Neutrino Oscillation Experiment, is an ideal beam for a high-statistics, low-energy neutrino scattering experiment. The MINERvA Collaboration has been approved to put a fine-grained, fully-active scintillator detector directly upstream of the MINOS near detector to study topics of interest to both particle and nuclear physicists. The NuMI beam, proposed detector, and physics topics will be outlined. [Preview Abstract] |
Saturday, April 22, 2006 4:54PM - 5:30PM |
E12.00008: Tanaka Dissertation Award Talk: Evidence for Neutrino Flavor Oscillations in the Sudbury Neutrino Observatory Invited Speaker: This talk will discuss the evidence for neutrino oscillations, with an emphasis on the results from the Sudbury Neutrino Observatory (SNO). With its unique heavy-water volume, SNO can simultaneously measure the electron neutrino flux and the total active neutrino flux coming from the Sun. The SNO results provide compelling model- independent evidence for neutrino flavor changes, providing a solution to the long-standing ``solar neutrino problem.'' While these results solve one mystery, there are many remaining questions about neutrinos. This talk will conclude with a discussion of the potential of current and future neutrino experiments. [Preview Abstract] |
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