Bulletin of the American Physical Society
Annual Meeting of the Four Corners Section of the APS
Volume 58, Number 12
Friday–Saturday, October 18–19, 2013; Denver, Colorado
Session I4: Particle Physics III: Experiment |
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Chair: Norm Buchanan, Colorado State University Room: 251 |
Saturday, October 19, 2013 8:00AM - 8:24AM |
I4.00001: The Long-Baseline Neutrino Experiment (LBNE) Invited Speaker: Robert Wilson I will report on the status of the Long-Baseline Neutrino Experiment (LBNE), which is a broad scientific program being developed in the United States as an international partnership. LBNE is proposed as an intense neutrino beam produced at Fermi National Accelerator Laboratory (Fermilab), a highly capable set of neutrino detectors on the Fermilab campus, and a large underground liquid argon time projection chamber at Sanford Underground Research Facility (SURF) in South Dakota. The high-intensity neutrino beam will allow LBNE to make high precision measurements of neutrino and anti-neutrino mixing separately. LBNE will make detailed studies of neutrino oscillations including measurements of the mass hierarchy and CP violation that take advantage of the 1300 km baseline. At the near site, the high-statistics neutrino scattering data will allow for many cross-section measurements and precision tests of the Standard Model. At the far site, the large underground detector will also open a new window to the search for nucleon decay, supernova neutrinos, and other astrophysical phenomena. [Preview Abstract] |
Saturday, October 19, 2013 8:24AM - 8:36AM |
I4.00002: The LBNE Photon Detector Ryan Wasserman, Norm Buchanan The Long Baseline Neutrino Experiment (LBNE) is a proposed neutrino oscillation experiment with a goal of measuring the orientation of the neutrino mass hierarchy and delta cp in the lepton sector. The LBNE neutrino beam will be generated at FermiLab and be detected by a 34 kton liquid argon time projection chamber located at the Homestake Mine in South Dakota. In this presentation I will give an overview of the motivation for and progress towards designing a photon detection system for the LBNE far detector that utilizes wavelength shifting light guides and silicon photon multipliers to collect light from neutrino interactions. [Preview Abstract] |
Saturday, October 19, 2013 8:36AM - 8:48AM |
I4.00003: Prototype Gas Cherenkov Radiation Muon Detector For LBNE Ben Schlitzer The proposed Long Baseline Neutrino Experiment (LBNE) beamline at Fermilab will require muon detectors in order to record the muon flux and eventually correlate this measurement to the muon-neutrino flux. At the University of Colorado, we have been conducting research to assemble a prototype muon detector using cosmic ray muons. This detector will exploit Cherenkov radiation emitted by incoming cosmic rays in order to detect whether a muon has passed though the detector. My presentation will examine the methods and apparatus used in performing experiments and analyzing data, as well as summarize results of all data collected up to the current date. [Preview Abstract] |
Saturday, October 19, 2013 8:48AM - 9:00AM |
I4.00004: Simulation of Photon Detector Prototypes for LBNE Andrea Shacklock, Norm Buchanan, Ryan Wasserman LBNE is the Long Baseline Neutrino Experiment utilizing an intense beam of neutrinos originating at Fermilab. Neutrinos will be sent from Fermilab to the Homestake mine in Lead, South Dakota, where neutrino oscillations will be studied. A photon detector, based on wavelength shifting plastics and silicon photomultipliers, will be part of the LBNE far detector and used to determine the start time of an event. In order to determine the optimal design of the photon detector simulations are necessary. Using Geant4 and LarSoft, we have made representations of photon detector prototypes and test facilities used to study them. I will present details of the models developed for the simulations, as well as comparisons between simulation and measured data. [Preview Abstract] |
Saturday, October 19, 2013 9:00AM - 9:12AM |
I4.00005: Improving Tau Neutrino Background Rejection using the LBNE Fast Monte Carlo Matthew Hogan The Long Baseline Neutrino Experiment (LBNE) science collaboration is planning an experiment built around a $\mathcal{O}$(10)kt liquid Argon TPC (LAr TPC) neutrino detector 1300km downstream of a wide band neutrino beam from Fermi National Accelerator Lab. Since a full Monte Carlo (MC) simulation is still under development, a Fast MC has been implemented. The Fast MC incorporates simulations of the neutrino beam flux and neutrino interactions while replacing the detector response and event reconstruction with parameterizations. The current Fast MC event selection algorithms, based on the identification of final-state lepton candidates, have a high background acceptance from charge-current (CC) tau neutrino interactions producing taus which decay leptonically (branching ratios of 17-18$\%$). In this work an improvement in CC tau neutrino background rejection is explored for electron neutrino appearance and muon neutrino disappearance event samples. A multivariate analysis (MVA) based discriminator built from reconstructed kinematic variables has been shown to significantly improve background rejection with little loss in signal efficiency. Techniques for constructing the discriminator and estimates of the resulting improvements in background rejection will be presented. [Preview Abstract] |
Saturday, October 19, 2013 9:12AM - 9:24AM |
I4.00006: Measurement of muon neutrino induced Charged Current Single Charged Pion Production Flux-averaged Absolute Cross-Section on Water in the P{\O}D Detector Shamil Assylbekov, Tomasz Wachala, Robert Wilson Using T2K experiment's near detector data samples of Charged Current interactions after analysis cuts and utilizing a water event rate subtraction technique we report a preliminary measurement of single charged pion production cross-section on water. The preliminary data result with the statistic and systematic uncertainties is presented in comparison to the NEUT Monte Carlo prediction. [Preview Abstract] |
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