E. T. Atkin
A5086287291- Neutrino Physics Research
- Particle physics theoretical and experimental studies
- Astrophysics and Cosmic Phenomena
- Particle Detector Development and Performance
- Dark Matter and Cosmic Phenomena
- Radiation Detection and Scintillator Technologies
- Atomic and Subatomic Physics Research
- Muon and positron interactions and applications
- Quantum, superfluid, helium dynamics
- Nuclear Physics and Applications
- Particle accelerators and beam dynamics
- Modular Robots and Swarm Intelligence
- Crime Patterns and Interventions
- CCD and CMOS Imaging Sensors
- Criminal Justice and Corrections Analysis
- Cold Atom Physics and Bose-Einstein Condensates
- Advanced Optical Sensing Technologies
- American Constitutional Law and Politics
- Silicon and Solar Cell Technologies
- Advanced NMR Techniques and Applications
Imperial College London
2019-2025
Imperial Valley College
2025
European Organization for Nuclear Research
2021
The T2K experiment presents new measurements of neutrino oscillation parameters using $19.7(16.3)\times10^{20}$ protons on target (POT) in (anti-)neutrino mode at the far detector (FD). Compared to previous analysis, an additional $4.7\times10^{20}$ POT data was collected FD. Significant improvements were made analysis methodology, with near-detector introducing selections and more than double data. Additionally, this is first use NA61/SHINE a replica tune flux model, interaction model...
The determination of the direction a stellar core collapse via its neutrino emission is crucial for identification progenitor multimessenger follow-up. A highly effective method reconstructing supernova directions within Deep Underground Neutrino Experiment (DUNE) introduced. pointing resolution studied by simulating and electron-neutrino charged-current absorption on <a:math xmlns:a="http://www.w3.org/1998/Math/MathML"...
The T2K experiment reports updated measurements of neutrino and antineutrino oscillations using both appearance disappearance channels. This result comes from an exposure $14.9(16.4)\ifmmode\times\else\texttimes\fi{}1{0}^{20}$ protons on target in (antineutrino) mode. Significant improvements have been made to the interaction model far detector reconstruction. An extensive set simulated data studies also performed quantify effect uncertainties oscillation parameter sensitivity. performs...
Abstract DUNE is an international experiment dedicated to addressing some of the questions at forefront particle physics and astrophysics, including mystifying preponderance matter over antimatter in early universe. The dual-site will employ intense neutrino beam focused on a near far detector as it aims determine mass hierarchy make high-precision measurements PMNS matrix parameters, CP-violating phase. It also stand ready observe supernova bursts, seeks nucleon decay signature grand...
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...
This paper reports the first simultaneous measurement of double differential muon neutrino charged-current cross section on oxygen and carbon without pions in final state as a function outgoing kinematics, made at ND280 off-axis near detector T2K experiment. The ratio sections is also provided to help validate various models' ability extrapolate between nuclear targets, required oscillation analyses. data are taken using beam with an energy spectrum peaked 0.6 GeV. extracted compared...
A primary goal of the upcoming Deep Underground Neutrino Experiment (DUNE) is to measure $\mathcal{O}(10)$ MeV neutrinos produced by a Galactic core-collapse supernova if one should occur during lifetime experiment. The liquid-argon-based detectors planned for DUNE are expected be uniquely sensitive $\nu_e$ component flux, enabling wide variety physics and astrophysics measurements. key requirement correct interpretation these measurements good understanding energy-dependent total cross...
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...
This paper presents the first combined measurement of double-differential muon neutrino and antineutrino charged-current cross sections with no pions in final state on hydrocarbon at off-axis near detector T2K experiment. The data analyzed this work comprise $5.8\ifmmode\times\else\texttimes\fi{}{10}^{20}$ $6.3\ifmmode\times\else\texttimes\fi{}{10}^{20}$ protons target mode respectively, a beam energy peak 0.6 GeV. Using two measured sections, sum, difference, asymmetry were calculated aim...
Abstract This paper introduces a novel track-length extension fitting algorithm for measuring the kinetic energies of inelastically interacting particles in liquid argon time projection chambers (LArTPCs). The finds most probable offset track length track-like object by comparing measured ionization density as function position with theoretical prediction energy loss energy, including models electron recombination and detector response. can be used to measure that interact before they stop,...
Muon neutrino and antineutrino disappearance probabilities are identical in the standard three-flavor oscillation framework, but $CPT$ violation nonstandard interactions can violate this symmetry. In work we report measurements of ${\mathrm{sin}}^{2}{\ensuremath{\theta}}_{23}$ $\mathrm{\ensuremath{\Delta}}{m}_{32}^{2}$ independently for neutrinos antineutrinos. The aforementioned symmetry would manifest as an inconsistency parameters. analysis discussed here uses a total...
A bstract The electron (anti-)neutrino component of the T2K neutrino beam constitutes largest background in measurement appearance at far detector. scattering is measured directly with off-axis near detector, ND280. selection events plastic scintillator target from both and anti-neutrino mode beams discussed this paper. flux integrated single differential charged-current inclusive cross-sections, dσ/dp dσ/d cos( θ ), total cross-sections a limited phase-space momentum angle ( p > 300...
Neutrino- and antineutrino-oxygen neutral-current quasielasticlike interactions are measured at Super-Kamiokande using nuclear deexcitation $\ensuremath{\gamma}$ rays to identify signal-like in data from a $14.94(16.35)\ifmmode\times\else\texttimes\fi{}{10}^{20}$ protons-on-target exposure of the T2K neutrino (antineutrino) beam. The flux-averaged cross sections on oxygen nuclei...
This paper reports the first T2K measurement of transverse kinematic imbalance in single-π+ production channel neutrino interactions. We measure differential cross sections muon-neutrino charged-current interaction on hydrocarbon with a single π+ and at least one proton final state, ND280 off axis near detector experiment. The extracted are compared to predictions from different neutrino-nucleus event generators. Overall, results show preference for models that have more realistic treatment...
We report the measurements of single and double differential cross section muon neutrino charged-current interactions on carbon with a positively charged pion in final state at T2K off-axis near detector using $5.56\ifmmode\times\else\texttimes\fi{}{10}^{20}$ protons target. The analysis uses data control samples for background subtraction signal, defined as negatively exiting from target nucleus, is extracted an unfolding method. model-dependent section, integrated over beam spectrum...
Electron antineutrino appearance is measured by the T2K experiment in an accelerator-produced beam, using additional neutrino beam operation to constrain parameters of Pontecorvo-Maki-Nakagawa-Sakata (PMNS) mixing matrix. observes 15 candidate electron events with a background expectation 9.3 events. Including information from kinematic distribution observed events, hypothesis no disfavored significance $2.40\ensuremath{\sigma}$ and discrepancy between data PMNS predictions found. A...
We report measurements by the T2K experiment of parameters ${\ensuremath{\theta}}_{23}$ and $\mathrm{\ensuremath{\Delta}}{m}_{32}^{2}$, which govern disappearance muon neutrinos antineutrinos in three-flavor PMNS neutrino oscillation model at T2K's energy propagation distance. Utilizing ability to run with either a mainly or antineutrino beam, muon-like events from each beam mode are used measure these separately for oscillations. Data taken $1.49\ifmmode\times\else\texttimes\fi{}{10}^{21}$...
This paper reports the first measurement of muon neutrino charged-current interactions without pions in final state using multiple detectors with correlated energy spectra at T2K. The data was collected on hydrocarbon targets off-axis T2K near detector (ND280) and on-axis (INGRID) peaked 0.6 GeV 1.1 respectively. flux presents an opportunity to reduce impact uncertainty study dependence interactions. extracted double-differential cross sections are compared several Monte Carlo...
Abstract Doping of liquid argon TPCs (LArTPCs) with a small concentration xenon is technique for light-shifting and facilitates the detection scintillation light. In this paper, we present results first doping test ever performed in kiloton-scale LArTPC. From February to May 2020, carried out special run single-phase DUNE Far Detector prototype (ProtoDUNE-SP) at CERN, featuring 720 t total mass 410 fiducial mass. A 5.4 ppm nitrogen contamination was during campaign. The goal measure light...
The international collaboration designing and constructing the Deep Underground Neutrino Experiment (DUNE) at Long-Baseline Facility (LBNF) has developed a two-phase strategy toward implementation of this leading-edge, large-scale science project. 2023 report US Particle Physics Project Prioritization Panel (P5) reaffirmed vision strongly endorsed DUNE Phase I II, as did European Strategy for Physics. While construction is well underway, White Paper focuses on II planning. Phase-II consists...
Abstract The international collaboration designing and constructing the Deep Underground Neutrino Experiment (DUNE) at Long-Baseline Facility (LBNF) has developed a two-phase strategy toward implementation of this leading-edge, large-scale science project. 2023 report US Particle Physics Project Prioritization Panel (P5) reaffirmed vision strongly endorsed DUNE Phase I II, as did European Strategy for Physics. While construction is well underway, White Paper focuses on II planning. Phase-II...