Bulletin of the American Physical Society
APS April Meeting 2021
Volume 66, Number 5
Saturday–Tuesday, April 17–20, 2021; Virtual; Time Zone: Central Daylight Time, USA
Session L14: Accelerator Neutrinos IILive
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Sponsoring Units: DNP Chair: Joe Carlson, LANL |
Sunday, April 18, 2021 3:45PM - 3:57PM Live |
L14.00001: Charged-current neutrino-induced K+ production in MicroBooNE Jairo Rodriguez Rondon, David Martinez, Arturo Fiorentini MicroBooNE is an 85-ton active mass liquid-argon time projection chamber (LArTPC) neutrino detector exposed to the Booster Neutrino Beam (BNB) at Fermilab. MicroBooNE’s physics goals are the precision measurement of neutrino interactions on argon in the 1 GeV energy regime and investigating the Low Energy Excess (LEE) of neutrino events observed by the MiniBooNE experiment. The study of neutrino interactions producing a K$+$ in the final-state, which has never been measured on argon, can improve the background estimates for future proton-decay experiments looking for the p $\rightarrow$ K$+\nu$ channel on argon such as DUNE. In this work, we present a simulation study for a selection of associated K$+$ produced by charged-current neutrino interactions which decay into a $\mu+$ and a $\nu_\mu$ in the MicroBooNE detector. We will compare two different approaches to identify kaon tracks. The first approach uses calorimetry and the Bethe-Bloch prediction for various particle hypotheses, and the second approach uses machine learning techniques. [Preview Abstract] |
Sunday, April 18, 2021 3:57PM - 4:09PM Live |
L14.00002: Using Transverse Kinematic Imbalance to Probe Intranuclear Dynamics in Pion Scattering on Argon in ProtoDUNE Kang Yang Nuclear effects in neutrino-nucleus scattering contribute a large systematics uncertainty in the search of CP violation in the lepton sector. Reducing the uncertainty and placing stringent constraints on our nuclear model in neutrino generators are critical for DUNE. The analysis on transverse kinematics imbalance can probe the intranuclear dynamics in argon and also provide a better understanding of our detector response to hadrons in ProtoDUNE. In this talk, I will report the physics analysis of argon nuclear effects using ProtoDUNE beam data in this novel approach. [Preview Abstract] |
Sunday, April 18, 2021 4:09PM - 4:21PM Live |
L14.00003: Potential of studying neutrino interactions in the DUNE high-pressure gas time projection chamber via transverse kinematic imbalance Federico Battisti The HPgTPC (high-pressure gas time projection chamber) is the central element of ND-GAr, one of the proposed components of the future DUNE near detector, and has been designed to achieve low detection thresholds and high acceptance. The HPgTPC's characteristics make it an optimal detector to study neutrino interactions. In this talk I will discuss how nuclear effects could be studied in the HPgTPC using transverse kinematic imbalance (TKI), a technique which has been extensively studied in the MINERVA and T2K experiments. Furthermore I will investigate the feasibility of using the TKI techniques to detect pure neutrino-hydrogen interactions, considering different options for the TPC gas mixtures. [Preview Abstract] |
Sunday, April 18, 2021 4:21PM - 4:33PM Live |
L14.00004: Finding Neutrons in the NOvA Near Detector Miranda Elkins NOvA is a long-baseline neutrino oscillation experiment which measures electron (anti)neutrino appearance and muon (anti)neutrino disappearance using neutrinos originating from the NuMI Beam at Fermilab. NOvA uses these observations to constrain several neutrino oscillation parameters such as: the CP violating phase, the atmospheric mass squared difference, and the largest mixing angle. It is critical to understand the sources of systematic uncertainties to make precise measurements of these parameters and to make improvements for future analyses. One key systematic for the antineutrino measurements stems from limited understanding of how neutrons interact in the NOvA detectors. This talk presents newly developed techniques for identifying neutron energy depositions in the NOvA near detector as well as comparisons with neutron interaction simulations. The information from these studies will be used to improve the current NOvA neutron systematic uncertainty in upcoming analyses. [Preview Abstract] |
Sunday, April 18, 2021 4:33PM - 4:45PM Live |
L14.00005: Updated MiniBooNE Results with the Complete Dataset Nick Kamp The MiniBooNE collaboration has recently updated their neutrino oscillation results to incorporate the complete dataset for the experiment, corresponding to 18.75 (11.27) $\times$ 10$^{20}$ protons-on-target in neutrino (antineutrino) mode. An excess of electron-like events is observed at a significance of 4.8$\sigma$. The larger sample size allows for a number of new studies to be performed regarding the excess, exploring, for example, outgoing lepton energy-scattering angle correlations, beam timing distributions, and event radial distributions. The timing and radial distributions specifically disfavor excess interpretations that rely on photons either entering or exiting the detector volume. This talk will present these new studies in detail. [Preview Abstract] |
Sunday, April 18, 2021 4:45PM - 4:57PM Live |
L14.00006: Event Classification in ANNIE David Maksimovic The Accelerator Neutrino Neutron Interaction Experiment (ANNIE) is a 26-ton Gadolinium-doped water Cherenkov detector located at the Booster Neutrino Beam (BNB) at Fermilab. The scientific aim of ANNIE is the study of the cross-section and the neutron multiplicity of GeV neutrinos in the BNB. These measurements will benefit next generation neutrino experiments through the reduction of systematics and understanding the underlying interactions. Furthermore, ANNIE serves as a testbench for new experimental techniques such as the implementation of ultrafast Large Area Picosecond Photodetector (LAPPD), Gadolinium-doped water and application of Convolutional Neural Networks (CNNs) for event classification. For the primary analysis of ANNIEs physics run, we present in this talk the selection methods and tools necessary for the classification of CC muon-events and neutron counting. [Preview Abstract] |
Sunday, April 18, 2021 4:57PM - 5:09PM Live |
L14.00007: Prospects of Neutrino Cross Section Measurements Using the NuMI off axis at ICARUS Ryan Howell ICARUS, a Liquid Argon Time Projection Chamber, will serve as the Far Detector of the short-baseline neutrino program using the Booster beamline at Fermilab. It is located 103 mrad off-axis from the NuMI beamline. Prospects for cross-section measurements and the status of the trigger system using the PMT system to collect electron and muon neutrinos from NuMI will be shown. Accurate neutrino cross-section measurements on argon are required for precise measurements of neutrino oscillation parameters such as CP- violation and the neutrino mass hierarchy. [Preview Abstract] |
Sunday, April 18, 2021 5:09PM - 5:21PM Live |
L14.00008: ANNIE Makes Progress Towards First Neutron Multiplicity Measurement Julie He The Accelerator Neutrino Neutron Interaction Experiment (ANNIE) is progressing towards achieving its physics goals. Situated on the Booster Neutrino Beam (BNB) at Fermilab, ANNIE is a 26-ton gadolinium-doped water Cherenkov detector with the main goal of measuring the final state neutron multiplicity of neutrino-nucleus interactions as a function of momentum transfer. This measurement will improve our understanding of these complex interactions and help reduce the associated systematic uncertainties, thus benefiting the next-generation of long-baseline neutrino experiments. ANNIE will be the first to make this high-statistics measurement. ANNIE will also be the first to deploy an array of a new type of photodetector, the Large Area Picosecond Photodetector (LAPPD). The characterization of the LAPPD’s picosecond timing and centimeter-level spatial capabilities is underway. ANNIE has successfully acquired commissioning beam and calibration data. This talk will focus on the results of the LAPPD development testing, detector calibration, and neutrino beam commissioning. [Preview Abstract] |
Sunday, April 18, 2021 5:21PM - 5:33PM Live |
L14.00009: Physics opportunities at nuSTORM Luis Alvarez Ruso, Silvia Pascoli The intense beam of muon and electron neutrinos with precisely known energy distributions provided by the stored-muon facility (nuSTORM) is bound to have a significant impact in our understanding of the fundamental properties of neutrinos and their interactions. The precision goals of the oscillation program require a realistic modeling of neutrino-nucleus scattering dynamics. Critically, nuSTORM can contribute to this effort by providing the ultimate experimental program of scattering measurements. Especially appealing are the prospects for new precise direct or indirect measurement of cross sections on single nucleons. The cross section for the scattering on complex nuclei is sensitive to energy and momentum transfers. Data with both muons and electrons in the final state are therefore very valuable. Sensitivity to physics beyond the Standard Model (BSM) is provided by nuSTORM’s unique features. This allows sensitive searches for short-baseline flavor transitions, light sterile neutrinos, nonstandard interactions, and non-unitarity. In synergy with the scattering program, new physics searches would also profit from measurements of exclusive final states, allowing for BSM neutrino interactions to be probed in neutrino-electron scattering and by searching for exotic final states [Preview Abstract] |
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