A5065899572- Neutrino Physics Research
- Particle physics theoretical and experimental studies
- Astrophysics and Cosmic Phenomena
- Dark Matter and Cosmic Phenomena
- Particle Detector Development and Performance
- Radiation Detection and Scintillator Technologies
- Particle accelerators and beam dynamics
- Atomic and Subatomic Physics Research
- Muon and positron interactions and applications
- Nuclear Physics and Applications
- High-Energy Particle Collisions Research
- Noncommutative and Quantum Gravity Theories
- Quantum, superfluid, helium dynamics
- Nuclear physics research studies
- Superconducting Materials and Applications
- Computational Physics and Python Applications
- Quantum Chromodynamics and Particle Interactions
- Planetary Science and Exploration
- Quantum Information and Cryptography
- CCD and CMOS Imaging Sensors
- Radiation Therapy and Dosimetry
- Cold Atom Physics and Bose-Einstein Condensates
- Isotope Analysis in Ecology
- Advanced Optical Sensing Technologies
- Advanced Fluorescence Microscopy Techniques
Lancaster University
2016-2025
Lancaster City Council
2020-2024
D. Mendeleyev University of Chemical Technology of Russia
2023
Sorbonne Université
2023
Université Paris Cité
2023
National Research Nuclear University MEPhI
2023
Centre National de la Recherche Scientifique
2023
Istituto Nazionale di Fisica Nucleare, Sezione di Torino
2023
Istituto Nazionale di Fisica Nucleare, Sezione di Napoli
2023
Boston University
2018-2021
We report the results of a search for ${\ensuremath{\nu}}_{e}$ appearance in ${\ensuremath{\nu}}_{\ensuremath{\mu}}$ beam MINOS long-baseline neutrino experiment. With an improved analysis and increased exposure $8.2\ifmmode\times\else\texttimes\fi{}{10}^{20}$ protons on NuMI target at Fermilab, we find that $2{sin}^{2}({\ensuremath{\theta}}_{23}){sin}^{2}(2{\ensuremath{\theta}}_{13})<0.12(0.20)$ 90% confidence level $\ensuremath{\delta}=0$ normal (inverted) mass hierarchy, with best-fit...
The MiniBooNE experiment at Fermilab reports results from an analysis of $\nu_e$ appearance data $12.84 \times 10^{20}$ protons on target in neutrino mode, increase approximately a factor two over previously reported results. A charged-current quasielastic event excess $381.2 \pm 85.2$ events ($4.5 \sigma$) is observed the energy range $200<E_\nu^{QE}<1250$~MeV. Combining these with $\bar \nu_e$ $11.27 antineutrino total plus $460.5 99.0$ ($4.7 observed. If interpreted two-neutrino...
The MiniBooNE experiment at Fermilab reports results from a search for ${\overline{\ensuremath{\nu}}}_{\ensuremath{\mu}}\ensuremath{\rightarrow}{\overline{\ensuremath{\nu}}}_{e}$ oscillations, using data sample corresponding to $5.66\ifmmode\times\else\texttimes\fi{}{10}^{20}$ protons on target. An excess of $20.9\ifmmode\pm\else\textpm\fi{}14.0$ events is observed in the energy range $475<{E}_{\ensuremath{\nu}}^{\mathrm{QE}}<1250\text{ }\text{ }\mathrm{MeV}$, which, when constrained by...
A high-statistics sample of charged-current muon neutrino scattering events collected with the MiniBooNE experiment is analyzed to extract first measurement double differential cross section ($\frac{d^2\sigma}{dT_\mu d\cos\theta_\mu}$) for quasielastic (CCQE) on carbon. This result features minimal model dependence and provides most complete information this process date. With assumption CCQE scattering, absolute as a function energy ($\sigma[E_\nu]$) single ($\frac{d\sigma}{dQ^2}$) are...
The MiniBooNE Collaboration observes unexplained electronlike events in the reconstructed neutrino energy range from 200 to 475 MeV. With $6.46\ifmmode\times\else\texttimes\fi{}{10}^{20}$ protons on target, 544 are observed this range, compared an expectation of $415.2\ifmmode\pm\else\textpm\fi{}43.4$ events, corresponding excess $128.8\ifmmode\pm\else\textpm\fi{}20.4\ifmmode\pm\else\textpm\fi{}38.3$ events. shape several kinematic variables is consistent with being due either...
The Booster Neutrino Experiment (MiniBooNE) searches for numu-to-nue oscillations using the O(1 GeV) neutrino beam produced by synchrotron at Fermi National Accelerator Laboratory (FNAL). delivers protons with 8 GeV kinetic energy (8.89 GeV/c momentum) to a beryllium target, producing neutrinos from decay of secondary particles in line. We describe Monte Carlo simulation methods used estimate flux beamline incident on MiniBooNE detector both polarities focussing horn. uses Geant4 framework...
Measurements of neutrino oscillations using the disappearance muon neutrinos from Fermilab NuMI beam as observed by two MINOS detectors are reported. New analysis methods have been applied to an enlarged data sample exposure 7.25×10(20) protons on target. A fit yields values |Δm(2)|=(2.32(-0.08)(+0.12))×10(-3) eV(2) for atmospheric mass splitting and sin(2)(2θ)>0.90 (90% C.L.) mixing angle. Pure decay quantum decoherence hypotheses excluded at 7 9 standard deviations, respectively.
We report measurements of oscillation parameters from ν(μ) and disappearance using beam atmospheric data MINOS. The comprise exposures 10.71×10(20) protons on target in the ν(μ)-dominated beam, 3.36×10(20) ν(μ)-enhanced 37.88 kton yr neutrinos. Assuming identical ν parameters, we measure |Δm2| = (2.41(-0.10)(+0.09))×10(-3) eV2 sin2(2θ) 0.950(-0.036)(+0.035). Allowing independent oscillations, antineutrino (2.50(-0.25)(+0.23))×10(-3) 0.97(-0.08)(+0.03), with minimal change to neutrino parameters.
We report on a new analysis of neutrino oscillations in MINOS using the complete set accelerator and atmospheric data. The combines $\nu_{\mu}$ disappearance $\nu_{e}$ appearance data three-flavor formalism. measure $|\Delta m^{2}_{32}|=[2.28-2.46]\times10^{-3}\mbox{\,eV}^{2}$ (68% C.L.) $\sin^{2}\theta_{23}=0.35-0.65$ (90% normal hierarchy, m^{2}_{32}|=[2.32-2.53]\times10^{-3}\mbox{\,eV}^{2}$ $\sin^{2}\theta_{23}=0.34-0.67$ inverted hierarchy. also constrain $\delta_{CP}$, $\theta_{23}$...
We report on ν(e) and appearance in ν(μ) beams using the full MINOS data sample. The comparison of these at a 735 km baseline with θ13 measurements by reactor experiments probes δ, θ23 octant degeneracy, mass hierarchy. This analysis is first use this technique includes accelerator long-baseline search for → ν(e). Our disfavor 31% (5%) three-parameter space defined θ23, hierarchy 68% (90%) C.L. measure value 2sin(2)(2θ13)sin(2)(θ23) that consistent experiments.
The MiniBooNE experiment at Fermilab reports a total excess of $638.0\ifmmode\pm\else\textpm\fi{}52.1(\mathrm{stat}.)\ifmmode\pm\else\textpm\fi{}122.2(\mathrm{syst}.)$ electronlike events from data sample corresponding to $18.75\ifmmode\times\else\texttimes\fi{}{10}^{20}$ protons-on-target in neutrino mode, which is 46% increase the with respect previously published results and $11.27\ifmmode\times\else\texttimes\fi{}{10}^{20}$ antineutrino mode. overall significance excess,...
A search for mixing between active neutrinos and light sterile has been performed by looking muon neutrino disappearance in two detectors at baselines of 1.04 735 km, using a combined MINOS MINOS+ exposure 16.36×10^{20} protons on target. simultaneous fit to the charged-current neutral-current energy spectra yields no evidence 3+1 model. The most stringent limit date is set parameter sin^{2}θ_{24} values mass splitting Δm_{41}^{2}>10^{-4} eV^{2}.
Results are reported from a search for active to sterile neutrino oscillations in the MINOS long-baseline experiment, based on observation of neutral-current interactions, an exposure NuMI beam 7.07×1020 protons target. A total 802 event candidates is observed Far Detector, compared expected number 754±28(stat)±37(syst) among three flavors. The fraction fs disappearing νμ that may transition νs found be less than 22% at 90% C.L.Received 19 April...
We report a measurement of the flux-averaged neutral-current elastic differential cross section for neutrinos scattering on mineral oil (${\mathrm{CH}}_{2}$) as function four-momentum transferred squared, ${Q}^{2}$. It is obtained by measuring kinematics recoiling nucleons with kinetic energy greater than 50 MeV which are readily detected in MiniBooNE. This cross-section distribution fit fixed nucleon form factors apart from an axial mass ${M}_{A}$ that provides best...
The development and operation of liquid-argon time-projection chambers for neutrino physics has created a need new approaches to pattern recognition in order fully exploit the imaging capabilities offered by this technology. Whereas human brain can excel at identifying features recorded events, it is significant challenge develop an automated, algorithmic solution. Pandora Software Development Kit provides functionality aid design implementation pattern-recognition algorithms. It promotes...
Using a high-statistics, high-purity sample of ${\ensuremath{\nu}}_{\ensuremath{\mu}}$-induced charged current, pion events in mineral oil (${\mathrm{CH}}_{2}$), MiniBooNE reports collection interaction cross sections for this process. This includes measurements the $\mathrm{CC}{\ensuremath{\pi}}^{+}$ section as function neutrino energy, well flux-averaged single- and double-differential energy direction both final-state muon pion. In addition, each single-differential are extracted to...
We present several studies of convolutional neural networks applied to data coming from the MicroBooNE detector, a liquid argon time projection chamber (LArTPC). The algorithms studied include classification single particle images, localization and neutrino interactions in an image, detection simulated event overlaid with cosmic ray backgrounds taken real detector data. These demonstrate potential for identification or on interactions. also address technical issues that arise when applying...
The SciBooNE and MiniBooNE collaborations report the results of a ν_μdisappearance search in Δm^2 region 0.5-40 eV^2. neutrino rate as measured by tracking detectors is used to constrain at Cherenkov detector first joint analysis data from both collaborations. Two separate analyses combined samples set 90% confidence level (CL) limits on eV^2 region, with an improvement over previous experimental constraints between 10 30
The MiniBooNE Collaboration reports initial results from a search for ${\overline{\ensuremath{\nu}}}_{\ensuremath{\mu}}\ensuremath{\rightarrow}{\overline{\ensuremath{\nu}}}_{e}$ oscillations. A signal-blind analysis was performed using data sample corresponding to $3.39\ifmmode\times\else\texttimes\fi{}{10}^{20}$ protons on target. are consistent with background prediction across the full range of neutrino energy reconstructed assuming quasielastic scattering,...
MiniBooNE reports the first absolute cross sections for neutral current single ${\ensuremath{\pi}}^{0}$ production on ${\mathrm{CH}}_{2}$ induced by neutrino and antineutrino interactions measured from largest sets of NC events collected to date. The principal result consists differential as functions momentum angle averaged over flux at MiniBooNE. We find total...
Using a custom 3-Čerenkov ring fitter, we report cross sections for νμ-induced charged-current single π0 production on mineral oil (CH2) from sample of 5810 candidate events with 57% signal purity over an energy range 0.5–2.0 GeV. This includes measurements the absolute total section as function neutrino energy, and flux-averaged differential measured in terms Q2, μ− kinematics, kinematics. The yields (9.2±0.3stat±1.5syst)×10−39 cm2/CH2 at mean 0.965 GeV.7 MoreReceived 15 October...
We report results of a search for oscillations involving light sterile neutrino over distances 1.04 and 735 km in ν_{μ}-dominated beam with peak energy 3 GeV. The data, from an exposure 10.56×10^{20} protons on target, are analyzed using phenomenological model one neutrino. constrain the mixing parameters θ_{24} Δm_{41}^{2} set limits four-dimensional Pontecorvo-Maki-Nakagawa-Sakata matrix, |U_{μ4}|^{2} |U_{τ4}|^{2}, under assumption that between ν_{e} ν_{s} is negligible (|U_{e4}|^{2}=0)....
This Letter reports the first direct observation of muon antineutrino disappearance. The MINOS experiment has taken data with an accelerator beam optimized for ν(μ) production, accumulating exposure 1.71 × 10²⁰ protons on target. In Far Detector, 97 charged current events are observed. no-oscillation hypothesis predicts 156 and is excluded at 6.3σ. best fit to oscillation yields |Δm²| = [3.36(-0.40)(+0.46)(stat) ± 0.06(syst)] 10⁻³ eV², sin²(2θ) 0.86(-0.12)(+0.11)(stat) 0.01(syst)....