A5114378394- Neutrino Physics Research
- Particle physics theoretical and experimental studies
- Astrophysics and Cosmic Phenomena
- Dark Matter and Cosmic Phenomena
- Particle Detector Development and Performance
- Particle accelerators and beam dynamics
- High-Energy Particle Collisions Research
- Muon and positron interactions and applications
- Radiation Detection and Scintillator Technologies
- Particle Accelerators and Free-Electron Lasers
- Atomic and Subatomic Physics Research
- Quantum Chromodynamics and Particle Interactions
- Computational Physics and Python Applications
- Superconducting Materials and Applications
- Noncommutative and Quantum Gravity Theories
- Pulsars and Gravitational Waves Research
- Nuclear reactor physics and engineering
- Nuclear Physics and Applications
- Semiconductor materials and devices
- Distributed and Parallel Computing Systems
- Radiation Dose and Imaging
- Planetary Science and Exploration
- Electric Motor Design and Analysis
- Nuclear and radioactivity studies
- Gyrotron and Vacuum Electronics Research
Fermi National Accelerator Laboratory
2016-2025
Cochin University of Science and Technology
2023-2024
Banaras Hindu University
2023-2024
California Institute of Technology
2008-2024
Charles University
2023-2024
Argonne National Laboratory
2010-2019
National and Kapodistrian University of Athens
2008-2013
Indiana University Bloomington
2006-2012
Universidade de São Paulo
2011
Indiana University
2006-2011
We present the final report from a series of precision measurements muon anomalous magnetic moment, ${a}_{\ensuremath{\mu}}=(g\ensuremath{-}2)/2$. The details experimental method, apparatus, data taking, and analysis are summarized. Data obtained at Brookhaven National Laboratory, using nearly equal samples positive negative muons, were used to deduce ${a}_{\ensuremath{\mu}}(\mathrm{\text{Expt}})=11659208.0(5.4)(3.3)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}10}$, where...
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...
A precise measurement of the anomalous g value, a(mu) = (g-2)/2, for positive muon has been made at Brookhaven Alternating Gradient Synchrotron. The result a(mu+) 11 659 202(14) (6) x 10(-10) (1.3 ppm) is in good agreement with previous measurements and an error one third that combined data. current theoretical value from standard model a(mu)(SM) 159.6(6.7) (0.57 a(mu)(exp) - 43(16) which world average experimental value.
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.
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}.
A higher precision measurement of the anomalous g value, a(mu)=(g-2)/2, for positive muon has been made at Brookhaven Alternating Gradient Synchrotron, based on data collected in year 2000. The result a(mu(+))=11 659 204(7)(5)x10(-10) (0.7 ppm) is good agreement with previous measurements and an error about one-half that combined data. present world average experimental value a(mu)(expt)=11 203(8)x10(-10) ppm).
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 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)....
Received 22 August 2002DOI:https://doi.org/10.1103/PhysRevLett.89.129903©2002 American Physical Society
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)....
We report an improved measurement of ν(μ) disappearance over a distance 735 km using the MINOS detectors and Fermilab Main Injector neutrino beam in ν(μ)-enhanced configuration. From total exposure 2.95×10(20) protons on target, which 42% have not been previously analyzed, we make most precise Δm2=[2.62(-0.28)(+0.31)(stat)±0.09(syst)]×10(-3) eV2 constrain mixing angle sin2(2θ)>0.75 (90% C.L.). These values are agreement with Δm2 sin2(2θ) measured for ν(μ), removing tension reported [P....
We have searched for sidereal variations in the rate of antineutrino interactions MINOS Near Detector. Using antineutrinos produced by NuMI beam, we find no statistically significant modulation rate. When this result is placed context Standard Model Extension theory are able to place upper limits on coefficients defining theory. These used combination with results from an earlier analysis neutrino data further constrain coefficients.
Kinematic distributions from an inclusive sample of $1.41\ifmmode\times\else\texttimes\fi{}{10}^{6}$ charged-current ${\ensuremath{\nu}}_{\ensuremath{\mu}}$ interactions on iron, obtained using the MINOS near detector exposed to a wide-band beam with peak flux at 3 GeV, are compared conventional treatment neutrino scattering within Fermi gas nucleus. Results used guide selection subsample enriched in quasielastic ${\ensuremath{\nu}}_{\ensuremath{\mu}}\mathrm{Fe}$ interactions, containing...
We searched for a sidereal modulation in the MINOS far detector neutrino rate. Such signal would be consequence of Lorentz and CPT violation as described by standard-model extension framework. It also first detection perturbative effect to conventional mass oscillations. found no evidence this signature, upper limits placed on magnitudes violating coefficients describing theory are an improvement factors 20-510 over current best using near detector.
This paper reports measurements of atmospheric neutrino and antineutrino interactions in the MINOS Far Detector, based on 2553 live-days (37.9 kton-years) data. A total 2072 candidate events are observed. These separated into 905 contained-vertex muons 466 neutrino-induced rock-muons, both produced by charged-current $\nu_{\mu}$ $\bar{\nu}_{\mu}$ interactions, 701 showers, composed mainly $\nu_{e}$ $\bar{\nu}_{e}$ neutral-current interactions. The curvature muon tracks magnetic field...
The LArIAT liquid argon time projection chamber, placed in a tertiary beam of charged particles at the Fermilab Test Beam Facility, has collected large samples pions, muons, electrons, protons, and kaons momentum range 300-1400 MeV/c. This paper describes main aspects detector beamline, also reports on calibrations performed for beamline components.
Precise calorimetric reconstruction of 5-50 MeV electrons in liquid argon time projection chambers (LArTPCs) will enable the study astrophysical neutrinos DUNE and could enhance physics reach oscillation analyses. Liquid scintillation light has potential to improve energy for low-energy over charge-based measurements alone. Here we demonstrate light-augmented calorimetry a single-phase LArTPC using sample Michel from decays stopping cosmic muons LArIAT experiment at Fermilab. electron...
The fixed-target MIPP experiment, Fermilab E907, was designed to measure the production of hadrons from collisions momenta ranging 5 120 GeV/c on a variety nuclei. These data will generally improve simulation particle detectors and predictions beam fluxes at accelerators. spectrometer momentum resolution is between 3 4%, identification performed for particles 0.3 80 using $dE/dx$, time-of-flight Cherenkov radiation measurements. collected $1.42 \times10^6$ events GeV Main Injector protons...
A sample of $1.53\ifmmode\times\else\texttimes\fi{}{10}^{9}$ cosmic-ray-induced single muon events has been recorded at 225 m water equivalent using the MINOS near detector. The underground rate is observed to be highly correlated with effective atmospheric temperature. coefficient ${\ensuremath{\alpha}}_{T}$, relating change in vertical temperature, determined $0.428\ifmmode\pm\else\textpm\fi{}0.003(\text{stat}.)\ifmmode\pm\else\textpm\fi{}0.059(\text{syst}.)$. An alternative description...
Liquid Argon Time Projection Chambers (LArTPCs) are ideal detectors for precision neutrino physics. These detectors, when located deep underground, can also be used measurements of proton decay, and astrophysical neutrinos. The technology must completely developed, up to very large mass scales, fully mastered construct operate these this physics program. As part an integrated plan developing accurate in LArTPC known particle species the relevant energy ranges now deemed as necessary. LArIAT...
We report constraints on antineutrino oscillation parameters that were obtained by using the two MINOS detectors to measure 7% muon component of NuMI neutrino beam. In Far Detector, we select 130 events in charged-current sample, compared a prediction $136.4\ifmmode\pm\else\textpm\fi{}11.7(\mathrm{stat}{)}_{\ensuremath{-}8.9}^{+10.2}(\mathrm{syst})$ under assumption $|\ensuremath{\Delta}{\overline{m}}^{2}|=2.32\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}3}\text{ }\text{...