A5068179304- Astrophysics and Cosmic Phenomena
- Neutrino Physics Research
- Dark Matter and Cosmic Phenomena
- Radio Astronomy Observations and Technology
- Particle physics theoretical and experimental studies
- Gamma-ray bursts and supernovae
- Pulsars and Gravitational Waves Research
- Radio Wave Propagation Studies
- Particle Detector Development and Performance
- Precipitation Measurement and Analysis
- Gyrotron and Vacuum Electronics Research
- Ionosphere and magnetosphere dynamics
- Atmospheric Ozone and Climate
- Radiation Detection and Scintillator Technologies
- Atomic and Subatomic Physics Research
- Solar and Space Plasma Dynamics
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University of Copenhagen
2021-2025
The University of Texas at Arlington
2021-2024
Southern University and Agricultural and Mechanical College
2021-2024
Clark Atlanta University
2021-2024
Providence College
2021-2024
University of Alaska Anchorage
2021-2024
Lawrence Berkeley National Laboratory
2023
Institute of Physics, Academia Sinica
2023
The University of Tokyo
2021-2023
UCLouvain
2023
Final results are reported from operation of the PICO-60 C$_3$F$_8$ dark matter detector, a bubble chamber filled with 52 kg located in SNOLAB underground laboratory. The was operated at thermodynamic thresholds as low 1.2 keV without loss stability. A new blind 1404-kg-day exposure 2.45 threshold acquired approximately same expected total background rate previous 1167-kg-day 3.3 keV. This increased is enabled part by optical tracking analysis to better identify events near detector walls,...
A bstract While the origin of neutrino masses remains unknown, several key mass generation models result in a non-unitary three-neutrino mixing matrix. To put such to test, deviations matrix from unitarity can be measured directly through oscillation experiments. In this study, we perform Bayesian analysis model using recent public data atmospheric and reactor experiments — namely IceCube-DeepCore, Daya Bay, KamLAND. The novelty our approach compared preceding global fits for non-unitarity...
The primary advantage of moderately superheated bubble chamber detectors is their simultaneous sensitivity to nuclear recoils from weakly interacting massive particle (WIMP) dark matter and insensitivity electron recoil backgrounds. A comprehensive analysis PICO gamma calibration data demonstrates for the first time that in ${\mathrm{C}}_{3}{\mathrm{F}}_{8}$ scale accordance with a new nucleation mechanism, rather than one driven by hot spike as previously supposed. Using this semiempirical...
The PICO experiment uses bubble chambers filled with superheated C$_3$F$_8$ for spin-dependent WIMP dark matter searches. One of the main sources background in these detectors is alpha particles from decays environmental $^{222}\mathrm{Rn}$, which nucleate bubbles that are visually indistinguishable candidate events. Alpha-induced can be discriminated acoustically, because signal events consistently larger magnitude than nuclear recoil/WIMP-like By studying dynamics nucleated by two types...
Hadronic interactions of highly energetic projectiles in matter induce rich cascades daughter particles, an example being atmospheric neutrinos produced cosmic ray air showers. Fully analytical modelling such cascades, due to the amount and complexity coupled processes involved, is infeasible, while Monte Carlo simulations remain computationally expensive. These complications are mitigated numerical Matrix Cascade Equations (MCEq) code, which reaches Carlo-like precision at extremely low...
The atmospheric lepton fluxes play a crucial role in many particle and astroparticle physics experiments, e.g., establishing the neutrino signal muon background for oscillation measurements, or astrophysical searches. Matrix Cascade Equations (MCEq) code is numerical tool used to model by solving system of coupled differential equations production, interaction, decay at extremely low computational costs. Previously, MCEq framework accommodated only longitudinal development air showers, an...
While the origin of neutrino masses remains unknown, several key mass generation models result in a non-unitary three-neutrino mixing matrix. To put such to test, deviations matrix from unitarity can be measured directly through oscillation experiments. In this study, we perform Bayesian analysis model using recent public data atmospheric and reactor experiments - namely IceCube-DeepCore, Daya Bay, KamLAND. The novelty our approach compared preceding global fits for non-unitarity is detailed...
In neutrino experiments sensitive to multiple flavors, the analyzers may be presented with a choice of treating uncertainties on respective cross sections in correlated or an uncorrelated manner. This study focuses charged current deep inelastic scattering (CC DIS) channel both muon and tau neutrinos. We evaluate ratio leading-order $\nu_{\tau}$ $\nu_{\mu}$ derive its uncertainty from underlying parton distribution functions (PDFs). find that, for energies above 5 GeV, PDF-driven section is...
The atmospheric lepton fluxes play a crucial role in many particle and astroparticle physics experiments, e.g. establishing the neutrino signal muon background for oscillation measurements, or astrophysical searches. Matrix Cascade Equations (MCEq) code is numerical tool used to model by solving system of coupled differential equations production, interaction, decay at extremely low computational costs. Previously, MCEq framework only accommodated longitudinal development air showers, an...
The Matrix Cascade Equations (MCEq) code is a numerical tool used to model the atmospheric lepton fluxes by solving system of coupled differential equations for particle production, interaction, and decay at extremely low computational cost. Previous iterations MCEq relied on longitudinal-only development air showers, which was sufficient modelling neutrino muon energies around 10 GeV above. However, precision calculations angular distributions below few GeV, lateral component hadronic...