A5012077792- Particle physics theoretical and experimental studies
- Neutrino Physics Research
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Astrophysics and Cosmic Phenomena
- Dark Matter and Cosmic Phenomena
- Particle Detector Development and Performance
- Particle accelerators and beam dynamics
- Atomic and Subatomic Physics Research
- Radiation Detection and Scintillator Technologies
- Muon and positron interactions and applications
- Nuclear Physics and Applications
- Particle Accelerators and Free-Electron Lasers
- Computational Physics and Python Applications
- Medical Imaging Techniques and Applications
- Cosmology and Gravitation Theories
- Noncommutative and Quantum Gravity Theories
- Black Holes and Theoretical Physics
- Nuclear physics research studies
- Planetary Science and Exploration
- Radio Frequency Integrated Circuit Design
- Quantum, superfluid, helium dynamics
- Superconducting Materials and Applications
- Gas Dynamics and Kinetic Theory
- Radioactive contamination and transfer
Brookhaven National Laboratory
2016-2025
Brookhaven College
2012-2025
RIKEN BNL Research Center
2023
University of Ferrara
2020
Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara
2020
Fermi National Accelerator Laboratory
2000-2007
Williams & Associates
2006
Purdue Pharma (Canada)
2006
University of Geneva
2005
Universidad de Cantabria
2002-2004
The Daya Bay Reactor Neutrino Experiment has measured a nonzero value for the neutrino mixing angle ${\ensuremath{\theta}}_{13}$ with significance of 5.2 standard deviations. Antineutrinos from six 2.9 $\mathrm{G}{\mathrm{W}}_{\mathrm{th}}$ reactors were detected in antineutrino detectors deployed two near (flux-weighted baseline 470 m and 576 m) one far (1648 underground experimental halls. With $43\text{ }000\text{ }\text{ }\mathrm{ton}--\mathrm{G}{\mathrm{W}}_{\mathrm{th}}--\mathrm{day}$...
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...
We present a new measurement of the inclusive and differential production cross sections $J/\ensuremath{\psi}$ mesons $b$ hadrons in proton-antiproton collisions at $\sqrt{s}=1960\text{ }\text{ }\mathrm{G}\mathrm{e}\mathrm{V}$. The data correspond to an integrated luminosity $39.7\text{ }{\mathrm{p}\mathrm{b}}^{\ensuremath{-}1}$ collected by CDF run II detector. find section for all transverse momenta from 0 $20\text{ }\mathrm{G}\mathrm{e}\mathrm{V}/c$ rapidity range $|y|<0.6$ be...
We report the observation of a narrow state decaying into $J/\psi\pi^+\pi^-$ and produced in $220 pb^{-1}$ $\bar{p} p $ collisions at $\sqrt{s}=1.96 TeV$ CDF II experiment. observe 730 \pm 90 decays. The mass is measured to be $3871.3 0.7 (stat) 0.4 (syst) MeV/c2$, with an observed width consistent detector resolution. This agreement recent by Belle Collaboration X(3872) meson.
We have measured the inclusive $b\ensuremath{\rightarrow}s\ensuremath{\gamma}$ branching ratio to be $(2.32\ifmmode\pm\else\textpm\fi{}0.57\ifmmode\pm\else\textpm\fi{}0.35)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}4}$, where first error is statistical and second systematic. Upper lower limits on ratio, each at 95% C.L., are $B(b\ensuremath{\rightarrow}s\ensuremath{\gamma})<4.2\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}4}$...
This Letter reports results from the MINOS experiment based on its initial exposure to neutrinos Fermilab NuMI beam. The rates and energy spectra of charged current ${\ensuremath{\nu}}_{\ensuremath{\mu}}$ interactions are compared in two detectors located along beam axis at distances 1 735 km. With $1.27\ifmmode\times\else\texttimes\fi{}{10}^{20}$ 120 GeV protons incident target, 215 events with energies below 30 observed Far Detector, an expectation $336\ifmmode\pm\else\textpm\fi{}14$...
This paper describes the design and construction of MicroBooNE liquid argon time projection chamber associated systems. is first phase Short Baseline Neutrino program, located at Fermilab, will utilize capabilities detectors to examine a rich assortment physics topics. In this document details specifications, assembly procedures, acceptance tests are reported.
This Letter reports new results from the MINOS experiment based on a two-year exposure to muon neutrinos Fermilab NuMI beam. Our data are consistent with quantum-mechanical oscillations of neutrino flavor mass splitting |Deltam2| = (2.43+/-0.13) x 10(-3) eV2 (68% C.L.) and mixing angle sin2(2theta) > 0.90 (90% C.L.). disfavor two alternative explanations for disappearance in flight: namely, decays into lighter particles quantum decoherence neutrinos, at 3.7 5.7 standard-deviation levels,...
The preponderance of matter over antimatter in the early universe, dynamics supernovae that produced heavy elements necessary for life, and whether protons eventually decay—these mysteries at forefront particle physics astrophysics are key to understanding evolution our its current state, eventual fate. Deep Underground Neutrino Experiment (DUNE) is an international world-class experiment dedicated addressing these questions as it searches leptonic charge-parity symmetry violation, stands...
The Physics Program for the Deep Underground Neutrino Experiment (DUNE) at Fermilab Long-Baseline Facility (LBNF) is described.
A measurement of the energy dependence antineutrino disappearance at Daya Bay reactor neutrino experiment is reported. Electron antineutrinos (ν¯(e)) from six 2.9 GW(th) reactors were detected with detectors deployed in two near (effective baselines 512 and 561 m) one far (1579 underground experimental halls. Using 217 days data, 41 589 (203 809 92 912) candidates hall (near halls). An improved oscillation amplitude sin(2)2θ(13)=0.090(-0.009)(+0.008) first direct ν¯(e) mass-squared...
We report an improved measurement of the neutrino mixing angle $\theta_{13}$ from Daya Bay Reactor Neutrino Experiment. exclude a zero value for $\sin^22\theta_{13}$ with significance 7.7 standard deviations. Electron antineutrinos six reactors 2.9 GW$_{\rm th}$ were detected in antineutrino detectors deployed two near (flux-weighted baselines 470 m and 576 m) one far (1648 underground experimental halls. Using 139 days data, 28909 (205308) electron candidates at hall (near halls). The ratio...
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 a measurement of electron antineutrino oscillation from the Daya Bay Reactor Neutrino Experiment with nearly 4 million reactor $\overline{\nu}_{e}$ inverse beta decay candidates observed over 1958 days data collection. The installation Flash-ADC readout system and special calibration campaign using different source enclosures reduce uncertainties in absolute energy to less than 0.5% for visible energies larger 2 MeV. uncertainty cosmogenic $^9$Li $^8$He background is reduced 45%...
This Letter reports a measurement of the flux and energy spectrum electron antineutrinos from six 2.9~GW$_{th}$ nuclear reactors with detectors deployed in two near (effective baselines 512~m 561~m) one far (1,579~m) underground experimental halls Daya Bay experiment. Using 217 days data, 296,721 41,589 inverse beta decay (IBD) candidates were detected halls, respectively. The measured IBD yield is (1.55 $\pm$ 0.04) $\times$ 10$^{-18}$~cm$^2$/GW/day or (5.92 0.14) 10$^{-43}$~cm$^2$/fission....
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 a new measurement of electron antineutrino disappearance using the fully constructed Daya Bay Reactor Neutrino Experiment. The final two eight detectors were installed in summer 2012. Including 404 days data collected from October 2012 to November 2013 resulted total exposure 6.9×10^{5} GW_{th} ton days, 3.6 times increase over our previous results. Improvements energy calibration limited variations between 0.2%. Removal six ^{241}Am-^{13}C radioactive sources reduced background by...
The Daya Bay Collaboration reports precise measurements of the ${\ensuremath{\theta}}_{13}$ neutrino mixing angle and predicts $\mathrm{\ensuremath{\Delta}}\phantom{\rule{0}{0ex}}{m}_{32}^{2}$ mass difference for both normal inverted hierarchy scenarios. These values are based on comparing detection antineutrinos by ''near'' ''far'' detectors more than 2.5 million inverse beta-decay observations.
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 sensitivity of the Deep Underground Neutrino Experiment (DUNE) to neutrino oscillation is determined, based on a full simulation, reconstruction, and event selection far detector simulation parameterized analysis near detector. Detailed uncertainties due flux prediction, interaction model, effects are included. DUNE will resolve mass ordering precision 5$\sigma$, for all $\delta_{\mathrm{CP}}$ values, after 2 years running with nominal design beam configuration. It has potential observe...
The Daya Bay experiment has observed correlations between reactor core fuel evolution and changes in the antineutrino flux energy spectrum. Four detectors two experimental halls were used to identify 2.2 million inverse beta decays (IBDs) over 1230 days spanning multiple cycles for each of six 2.9 GW$_{\textrm{th}}$ cores at Ling Ao nuclear power plants. Using detector data effective $^{239}$Pu fission fractions, $F_{239}$, from 0.25 0.35, measures an average IBD yield, $\bar{\sigma}_f$,...