A5084982085- Neutrino Physics Research
- Particle physics theoretical and experimental studies
- Astrophysics and Cosmic Phenomena
- Dark Matter and Cosmic Phenomena
- Atomic and Subatomic Physics Research
- Particle Detector Development and Performance
- Cosmology and Gravitation Theories
- Particle accelerators and beam dynamics
- Quantum Chromodynamics and Particle Interactions
- Radiation Detection and Scintillator Technologies
- Nuclear Physics and Applications
- Nuclear reactor physics and engineering
- Nuclear physics research studies
- Quantum, superfluid, helium dynamics
- Radiation Therapy and Dosimetry
- Regional Development and Policy
- Black Holes and Theoretical Physics
- Global Trade and Competitiveness
- Noncommutative and Quantum Gravity Theories
- Gamma-ray bursts and supernovae
- Computational Physics and Python Applications
- Polish socio-economic development
- Muon and positron interactions and applications
- Cold Atom Physics and Bose-Einstein Condensates
- Scientific Computing and Data Management
University of Alabama
2016-2025
University of Edinburgh
2024
Seoyeong University
2021
Lawrence Berkeley National Laboratory
2020
University of California, Berkeley
2020
Imperial College London
2019
University of Liverpool
2019
Stanford University
2017
SLAC National Accelerator Laboratory
2017
Kavli Institute for Particle Astrophysics and Cosmology
2017
A search for ${\overline{\ensuremath{\nu}}}_{\ensuremath{\mu}}\ensuremath{\rightarrow}{\overline{\ensuremath{\nu}}}_{e}$ oscillations was conducted by the Liquid Scintillator Neutrino Detector at Los Alamos Neutron Science Center using ${\overline{\ensuremath{\nu}}}_{\ensuremath{\mu}}$ from ${\ensuremath{\mu}}^{+}$ decay rest. total excess of $87.9\ifmmode\pm\else\textpm\fi{}22.4\ifmmode\pm\else\textpm\fi{}6.0$ events consistent with...
The MiniBooNE experiment at Fermilab reports results from an analysis of $\bar \nu_e$ appearance data $11.27 \times 10^{20}$ protons on target in antineutrino mode, increase approximately a factor two over the previously reported results. An event excess $78.4 \pm 28.5$ events ($2.8 \sigma$) is observed energy range $200<E_\nu^{QE}<1250$ MeV. If interpreted two-neutrino oscillation model, $\bar{\nu}_{\mu}\rightarrow\bar{\nu}_e$, best fit to has probability 66% while background-only...
The MiniBooNE Collaboration reports first results of a search for $\nu_e$ appearance in $\nu_\mu$ beam. With two largely independent analyses, we observe no significant excess events above background reconstructed neutrino energies 475 MeV. data are consistent with oscillations within appearance-only oscillation model.
A search for ${\overline{\ensuremath{\nu}}}_{e}$'s in excess of the number expected from conventional sources has been made using Liquid Scintillator Neutrino Detector, located 30 m behind Los Alamos Meson Physics Facility beam stop. The ${\overline{\ensuremath{\nu}}}_{e}$ are detected via ${\overline{\ensuremath{\nu}}}_{e}p\ensuremath{\rightarrow}{e}^{+}n$ with ${e}^{+}$ energy between 36 and $60\mathrm{MeV}$, followed by a $\ensuremath{\gamma}$ ray...
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 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 ${\ensuremath{\nu}}_{\ensuremath{\mu}}\ensuremath{\rightarrow}{\ensuremath{\nu}}_{e}$ oscillations has been conducted with the LSND apparatus using ${\ensuremath{\nu}}_{\ensuremath{\mu}}$ from ${\ensuremath{\pi}}^{+}$ decay in flight. Two analyses observe a total of 40 beam-on high-energy (60--200 MeV) electron events consistent ${\ensuremath{\nu}}_{e}\mathrm{C}\ensuremath{\rightarrow}{e}^{\ensuremath{-}}X$ inclusive reaction. This number is significantly above...
The cross section for the elastic scattering reaction ${\ensuremath{\nu}}_{e}{+e}^{\ensuremath{-}}\ensuremath{\rightarrow}{\ensuremath{\nu}}_{e}{+e}^{\ensuremath{-}}$ was measured by Liquid Scintillator Neutrino Detector using a ${\ensuremath{\mu}}^{+}$ decay-at-rest ${\ensuremath{\nu}}_{e}$ beam at Los Alamos Neutron Science Center. standard model of electroweak physics predicts large destructive interference between charge current and neutral channels this reaction. section,...
A search for ${\ensuremath{\nu}}_{\ensuremath{\mu}}\ensuremath{\rightarrow}{\ensuremath{\nu}}_{e}$ oscillations has been conducted at the Los Alamos Meson Physics Facility using ${\ensuremath{\nu}}_{\ensuremath{\mu}}$ from ${\ensuremath{\pi}}^{+}$ decay in flight. An excess number of beam-related events ${\ensuremath{\nu}}_{e}\stackrel{\ensuremath{\rightarrow}}{C}{e}^{\ensuremath{-}}X$ inclusive reaction is observed. The too large to be explained by normal ${\ensuremath{\nu}}_{e}$...
A search for ν¯μ→ν¯e oscillations has been conducted at the Los Alamos Meson Physics Facility using ν¯μ from μ+ decay rest. The ν¯e are detected via reaction ν¯ep→e+n, correlated with 2.2 MeV γ np→dγ. use of tight cuts to identify e+ events rays yields 22 energy between 36 and 60 only 4.6±0.6 background events. probability that this excess is due entirely a statistical fluctuation 4.1×10−8. χ2 fit entire sample results in total 51.0+20.2−19.5±8.0 20 MeV. If attributed oscillations,...
The largest sample ever recorded of ${\overline{\ensuremath{\nu}}}_{\ensuremath{\mu}}$ charged-current quasielastic (CCQE, ${\overline{\ensuremath{\nu}}}_{\ensuremath{\mu}}+p\ensuremath{\rightarrow}{\ensuremath{\mu}}^{+}+n$) candidate events is used to produce the minimally model-dependent, flux-integrated double-differential cross section $\frac{{d}^{2}\ensuremath{\sigma}}{d{T}_{\ensuremath{\mu}}d\mathrm{cos}{\ensuremath{\theta}}_{\ensuremath{\mu}}}$ for CCQE a mineral oil target. This...
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...
A search for sub-GeV dark matter produced from collisions of the Fermilab 8 GeV Booster protons with a steel beam dump was performed by MiniBooNE-DM Collaboration using data $1.86\ifmmode\times\else\texttimes\fi{}{10}^{20}$ on target in dedicated run. The MiniBooNE detector, consisting 818 tons mineral oil and located 490 meters downstream dump, is sensitive to variety initiated scattering reactions. Three interactions are considered this analysis: elastic off nucleons, inelastic neutral...
The MiniBooNE-DM Collaboration searched for vector-boson mediated production of dark matter using the Fermilab 8-GeV Booster proton beam in a dedicated run with 1.86×10^{20} protons delivered to steel dump. MiniBooNE detector, 490 m downstream, is sensitive via elastic scattering nucleons detector mineral oil. Analysis methods developed previous results were employed, and several constraining data sets simultaneously analyzed minimize systematic errors from neutrino flux interaction rates....
We formulate a systematic, nonperturbative expansion for the effective potential of \ensuremath{\lambda}${\mathrm{\ensuremath{\varphi}}}^{4}$ theory. At first order it gives Gaussian (GEP), which itself contains one-loop and leading-order 1/N results. Here, we compute second-order terms carry out renormalization in four-dimensional, ``precarious'' case, using dimensional regularization. (Difficulties with other regularizations are briefly discussed.) Remarkably, final result takes same...
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...
The MiniBooNE Collaboration reports a search for νμ and ¯νμ disappearance in the Δm2 region of 0.5–40 eV2. These measurements are important constraining models with extra types neutrinos, dimensions, CPT violation. Fits to shape energy spectra reveal no evidence at 90% confidence level (C.L.) either mode. test probes below Δm2=40 eV2 never explored before.Received 11 March 2009DOI:https://doi.org/10.1103/PhysRevLett.103.061802©2009 American Physical Society
The MiniBooNE and SciBooNE collaborations report the results of a joint search for short baseline disappearance ${\overline{\ensuremath{\nu}}}_{\ensuremath{\mu}}$ at Fermilab's Booster Neutrino Beamline. Cherenkov detector tracking observe antineutrinos from same beam, therefore combined analysis their data sets serves to partially constrain some flux cross section uncertainties. Uncertainties in ${\ensuremath{\nu}}_{\ensuremath{\mu}}$ background were constrained by neutrino measurements...