L. Bathe-Peters
A5013664791- Neutrino Physics Research
- Dark Matter and Cosmic Phenomena
- Particle physics theoretical and experimental studies
- Astrophysics and Cosmic Phenomena
- Particle Detector Development and Performance
- Radiation Detection and Scintillator Technologies
- Atomic and Subatomic Physics Research
- Particle accelerators and beam dynamics
- Radio Frequency Integrated Circuit Design
- Muon and positron interactions and applications
- Nuclear Physics and Applications
- Radioactive element chemistry and processing
- Hydrocarbon exploration and reservoir analysis
- Stellar, planetary, and galactic studies
- Astronomy and Astrophysical Research
- Anomaly Detection Techniques and Applications
- Cold Atom Physics and Bose-Einstein Condensates
- Adversarial Robustness in Machine Learning
- Astrophysics and Star Formation Studies
Science Oxford
2024
University of Oxford
2024
Harvard University Press
2020-2023
Harvard University
2020-2022
Osaka University
2021
University of Cambridge
2021
Tsinghua University
2020
Technische Universität Berlin
2020
Abstract We propose in this White Paper a concept for space experiment using cold atoms to search ultra-light dark matter, and detect gravitational waves the frequency range between most sensitive ranges of LISA terrestrial LIGO/Virgo/KAGRA/INDIGO experiments. This interdisciplinary experiment, called Atomic Experiment Dark Matter Gravity Exploration (AEDGE), will also complement other planned searches exploit synergies with wave detectors. give examples extended sensitivity matter offered...
We present a measurement of ν_{e} interactions from the Fermilab Booster Neutrino Beam using MicroBooNE liquid argon time projection chamber to address nature excess low energy observed by MiniBooNE Collaboration. Three independent searches are performed across multiple single electron final states, including an exclusive search for two-body scattering events with proton, semi-inclusive pionless events, and fully inclusive containing all hadronic states. With differing signal topologies,...
This article presents a measurement of νe interactions without pions in the final state using MicroBooNE experiment and an investigation into excess low-energy electromagnetic events observed by MiniBooNE Collaboration. The is performed exclusive channels with (1eNp0π) (1e0p0π) visible final-state protons 6.86×1020 on target data collected from Booster Neutrino Beam at Fermilab. Events are reconstructed Pandora pattern recognition toolkit selected additional topological information liquid...
Large liquid argon time projection chambers (LArTPCs), especially those operating near the surface, are susceptible to space charge effects. In context of LArTPCs, effect is build-up slow-moving positive ions in detector primarily due ionization from cosmic rays, leading a distortion electric field within detector. This leads displacement reconstructed position signal electrons LArTPC detectors ("spatial distortions"), as well variations amount electron-ion recombination experienced by...
We present an analysis of MicroBooNE data with a signature one muon, no pions, and at least proton above momentum threshold $300\text{ }\text{ }\mathrm{MeV}/\mathrm{c}$ ($\mathrm{CC}0\ensuremath{\pi}Np$). This is the first differential cross-section measurement this topology in neutrino-argon interactions. achieve significantly lower than previous carbon scintillator-based experiments. Using collected from total approximately $1.6\ifmmode\times\else\texttimes\fi{}{10}^{20}$ protons on...
We report results from a search for neutrino-induced neutral current (NC) resonant $\Delta$(1232) baryon production followed by $\Delta$ radiative decay, with $\langle0.8\rangle$~GeV neutrino beam. Data corresponding to MicroBooNE's first three years of operations (6.80$\times$10$^{20}$ protons on target) are used select single-photon events one or zero and without charged leptons in the final state ($1\gamma1p$ $1\gamma0p$, respectively). The background is constrained via an in-situ...
We present a measurement of the νe-interaction rate in MicroBooNE detector that addresses observed MiniBooNE anomalous low-energy excess (LEE). The approach taken isolates neutrino interactions consistent with kinematics charged-current quasielastic (CCQE) events. topology such signal events has final state one electron, proton, and zero mesons (1e1p). Multiple novel techniques are employed to identify 1e1p state, including particle identification use two methods Deep-Learning-based image...
We report a measurement of the energy-dependent total charged-current cross section σ(E_{ν}) for inclusive muon neutrinos scattering on argon, as well measurements flux-averaged differential sections function energy and hadronic transfer (ν). Data corresponding to 5.3×10^{19} protons target exposure were collected using MicroBooNE liquid argon time projection chamber located in Fermilab booster neutrino beam with mean approximately 0.8 GeV. The mapping between true E_{ν} reconstructed...
We report a search for an anomalous excess of inclusive charged-current (CC) νe interactions using the Wire-Cell event reconstruction package in MicroBooNE experiment, which is motivated by previous observation low-energy (LEE) electromagnetic events from MiniBooNE experiment. With single liquid argon time projection chamber detector, measurements νμ CC as well π0 are used to constrain signal and background predictions interactions. A data set collected February 2016 July 2018 corresponding...
Abstract Primary challenges for current and future precision neutrino experiments using liquid argon time projection chambers (LArTPCs) include understanding detector effects quantifying the associated systematic uncertainties. This paper presents a novel technique assessing propagating LArTPC detector-related The makes modifications to simulation waveforms based on parameterization of observed differences in ionization signals from TPC between data simulation, while remaining insensitive...
We report on the first measurement of flux-integrated single differential cross sections for charged-current (CC) muon neutrino (ν_{μ}) scattering argon with a and proton in final state, ^{40}Ar (ν_{μ},μp)X. The was carried out using Booster Neutrino Beam at Fermi National Accelerator Laboratory MicroBooNE liquid time projection chamber detector an exposure 4.59×10^{19} protons target. Events are selected to enhance contribution CC quasielastic (CCQE) interactions. data reported terms total...
We present a search for the decays of neutral scalar boson produced by kaons decaying at rest, in context Higgs portal model, using MicroBooNE detector. analyze data triggered time with Fermilab NuMI neutrino beam spill, an exposure 1.93×10^{20} protons on target. look monoenergetic scalars that come from direction hadron absorber, distance 100 m detector, and decay to electron-positron pairs. observe one candidate event, standard model background prediction 1.9±0.8. set upper limit...
We present the performance of a semantic segmentation network, sparsessnet, that provides pixel-level classification MicroBooNE data. The experiment employs liquid argon time projection chamber for study neutrino properties and interactions. sparsessnet is submanifold sparse convolutional neural which initial machine learning based algorithm utilized in one MicroBooNEs ${\ensuremath{\nu}}_{e}$-appearance oscillation analyses. network trained to categorize pixels into five classes, are...
The Module-0 Demonstrator is a single-phase 600 kg liquid argon time projection chamber operated as prototype for the DUNE near detector. Based on ArgonCube design concept, features novel 80k-channel pixelated charge readout and advanced high-coverage photon detection system. In this paper, we present an analysis of eight-day data set consisting 25 million cosmic ray events collected in spring 2021. We use sample to demonstrate imaging performance light systems well signal correlations...
For the operation of precision neutrino experiments, understanding interactions with matter is a preconditioned requirement for all detections and measurements neutrinos. The largest uncertainties in estimating neutrino-nucleus interaction cross sections arise from incomplete nuclear effects. In study oscillations scattering processes, obtaining an model associated substantial interest physics community. This report presents studies simulated CC 2p-2h interactions, which interacts bound pair...
China Jinping Underground Laboratory (CJPL) is ideal for studying solar-, geo-, and supernova neutrinos. A precise measurement of the cosmic-ray background would play an essential role in proceeding with R\&D research these MeV-scale neutrino experiments. Using a 1-ton prototype detector Neutrino Experiment (JNE), we detected 264 high-energy muon events from 645.2-day dataset at first phase CJPL (CJPL-I), reconstructed their directions, measured flux to be...
Abstract An accurate and efficient event reconstruction is required to realize the full scientific capability of liquid argon time projection chambers (LArTPCs). The current future neutrino experiments that rely on massive LArTPCs create a need for new ideas approaches. Wire-Cell, proposed in recent years, novel tomographic method LArTPCs. Wire-Cell 3D imaging approach capitalizes charge, sparsity, time, geometry information reconstruct topology-agnostic image ionization electrons prior...
We present a measurement of the combined ${\ensuremath{\nu}}_{e}+{\overline{\ensuremath{\nu}}}_{e}$ flux-averaged charged-current inclusive cross section on argon using data from MicroBooNE liquid time projection chamber (lartpc) at Fermilab. Using off-axis flux NuMI beam, has reconstructed 214 candidate interactions with an estimated exposure $2.4\ifmmode\times\else\texttimes\fi{}{10}^{20}$ protons target. Given purity 38.6%, this implies observation 80 events in argon, largest such sample...
We present the multiple particle identification (MPID) network, a convolutional neural network for object classification, developed by MicroBooNE. MPID provides probabilities that an interaction includes ${e}^{\ensuremath{-}}$, $\ensuremath{\gamma}$, ${\ensuremath{\mu}}^{\ensuremath{-}}$, ${\ensuremath{\pi}}^{\ifmmode\pm\else\textpm\fi{}}$, and protons in liquid argon time projection chamber single readout plane. The extends previously MicroBooNE [Convolutional networks applied to neutrino...
We present the first measurement of single-differential $\nu_e + \bar{\nu}_e$ charged-current inclusive cross sections on argon in electron or positron energy and scattering cosine over full angular range. Data were collected using MicroBooNE liquid time projection chamber located off-axis from Fermilab Neutrinos at Main Injector beam an exposure $2.0\times10^{20}$ protons target. The signal definition includes a 60 MeV threshold $\nu_e$ $\bar{\nu}_e$ 120 energy. measured total differential...
Wire-Cell is a 3D event reconstruction package for liquid argon time projection chambers. Through geometry, time, and drifted charge from multiple readout wire planes, space points with associated are reconstructed prior to the pattern recognition stage. Pattern techniques, including track trajectory $dQ/dx$ (ionization per unit length) fitting, neutrino vertex shower separation, particle-level clustering, particle identification then applied on these as well original 2D measurements. A deep...
The MicroBooNE liquid argon time projection chamber located at Fermilab is a neutrino experiment dedicated to the study of short-baseline oscillations, measurements cross sections in argon, and research development this novel detector technology. Accurate precise calorimetry are essential event reconstruction achieved by leveraging TPC measure deposited energy per unit length along particle trajectory, with mm resolution. We describe non-uniform calorimetric performance detector, showing...
The MicroBooNE continuous readout stream is a parallel of the liquid argon time projection chamber (LArTPC) which enables detection non-beam events such as those from supernova neutrino burst. low energies neutrinos and intense cosmic-ray background flux due to near-surface detector location makes triggering on these very challenging. Instead, relies delayed trigger generated by SNEWS (the Supernova Early Warning System) for detecting neutrinos. LArTPC generates large data volumes, requires...