A5105411550- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Neutrino Physics Research
- Dark Matter and Cosmic Phenomena
- Particle Detector Development and Performance
- Astrophysics and Cosmic Phenomena
- Atomic and Subatomic Physics Research
- Muon and positron interactions and applications
- Particle Accelerators and Free-Electron Lasers
- Particle accelerators and beam dynamics
- Radiation Detection and Scintillator Technologies
- Black Holes and Theoretical Physics
- Computational Physics and Python Applications
- Cosmology and Gravitation Theories
- Superconducting Materials and Applications
- Nuclear Physics and Applications
- Medical Imaging Techniques and Applications
- Nuclear physics research studies
- Nuclear reactor physics and engineering
- Distributed and Parallel Computing Systems
- Spacecraft and Cryogenic Technologies
- Advanced NMR Techniques and Applications
- Quantum, superfluid, helium dynamics
- Vacuum and Plasma Arcs
Kansas State University
2013-2024
Utah State University
2024
Rice University
2013
Institute of High Energy Physics
2010-2013
UCLouvain
2013
European Organization for Nuclear Research
2012
Massachusetts Institute of Technology
1989-2012
Columbia University
1990-1999
Istituto Nazionale di Fisica Nucleare, Sezione di Bologna
1998
Stanford University
1987-1997
The NuTeV Collaboration has extracted the electroweak parameter sin(2)theta(W) from measurement of ratios neutral current to charged nu and (-)nu cross sections. Our value, sin(2)theta((on-shell))(W) = 0.2277 +/- 0.0013(stat) 0.0009(syst), is 3 standard deviations above model prediction. We also present a independent analysis same data in terms neutral-current quark couplings.
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.
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 Deep Underground Neutrino Experiment (DUNE), a 40-kton underground liquid argon time projection chamber experiment, will be sensitive to the electron-neutrino flavor component of burst neutrinos expected from next Galactic core-collapse supernova. Such an observation bring unique insight into astrophysics core collapse as well properties neutrinos. general capabilities DUNE for neutrino detection in relevant few- few-tens-of-MeV energy range described. As example, DUNE's ability...
The status of the research on muon colliders is discussed and plans are outlined for future theoretical experimental studies. Besides continued work parameters a 3-4 0.5 TeV center-of-mass (CoM) energy collider, many studies now concentrating machine near 0.1 that could be factory s-channel production Higgs particles. We discuss various components in such colliders, starting from proton accelerator needed to generate pions heavy-Z target proceeding through phase rotation decay ($\pi \to \mu...
We present measurements of the semi-inclusive cross sections for νμ- and ν¯μ-nucleon deep inelastic scattering interactions with two oppositely charged muons in final state. These events dominantly arise from production a charm quark during process. The measurement was obtained analysis 5102 νμ-induced 1458 ν¯μ-induced collected NuTeV detector exposed to sign-selected beam at Fermilab Tevatron. also extract cross-section reanalysis 5030 1060 exposure same quad-triplet by Chicago Columbia...
We report a revised determination of charmed-D-meson absolute branching fractions based on complete reconstruction DD¯ events at the ψ(3770). Two backgrounds, Cabibbo-suppressed and multi-π0 D decays, are addressed in detail. The first measurement decay D0→K−π+π0π0 establishes sensitivity to hitherto unobserved modes. Removal both backgrounds reduces values our previously reported by (21-24)%, leaving their ratios largely unchanged. new unable account fully for deficit charm production...
We present an improved determination of the proton structure functions ${F}_{2}$ and ${\mathrm{xF}}_{3}$ from Columbia-Chicago-Fermilab-Rochester Collaboration $\ensuremath{\nu}\ensuremath{-}\mathrm{Fe}$ deep inelastic scattering experiment. Comparisons to corrected high-statistics charged-lepton results for NMC, E665, SLAC, BCDMS experiments indicate good agreement $x>0.1$ but some discrepancy at lower $x$. The ${Q}^{2}$ evolution both yields a value strong coupling constant scale mass $Z$...
The NuTeV experiment at Fermilab has obtained a unique high-statistics sample of neutrino and antineutrino interactions using its high-energy sign-selected beam. We present measurement the differential cross section for charged-current scattering from iron. determine relative ν¯ to ν section, r=σν¯/σν, high energy with errors factor 2 smaller than previous world average. Structure functions, F2(x,Q2) xF3(x,Q2), are determined by fitting inelasticity, y, dependence sections. This...
The ArgoNeuT liquid argon time projection chamber has collected thousands of neutrino and anti-neutrino events during an extended run period in the NuMI beam-line at Fermilab. This paper focuses on main aspects detector layout related technical features, including cryogenic equipment, chamber, read-out electronics, off-line data treatment. commissioning phase, physics run, first event displays are also reported. characterization working parameters data-taking, ionization electron drift...
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...
The ProtoDUNE-SP detector is a single-phase liquid argon time projection chamber with an active volume of $7.2\times 6.0\times 6.9$ m$^3$. It installed at the CERN Neutrino Platform in specially-constructed beam that delivers charged pions, kaons, protons, muons and electrons momenta range 0.3 GeV$/c$ to 7 GeV/$c$. Beam line instrumentation provides accurate momentum measurements particle identification. prototype for first far module Deep Underground Experiment, it incorporates full-size...
We describe the concept and procedure of drifted-charge extraction developed in MicroBooNE experiment, a single-phase liquid argon time projection chamber (LArTPC). This technique converts raw digitized TPC waveform to number ionization electrons passing through wire plane at given time. A robust recovery from both induction collection anode planes will augment 3D reconstruction, is particularly important for tomographic reconstruction algorithms. building blocks overall are described. The...
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...
A search for millicharged particles, a simple extension of the standard model, has been performed with ArgoNeuT detector exposed to Neutrinos at Main Injector beam Fermilab. The liquid argon time projection chamber enables particles through detection visible electron recoils. We an event signature two soft hits (MeV-scale energy depositions) aligned upstream target. For exposure 1.0×10^{20} protons on target, one candidate observed, compatible expected background. This is sensitive charges...
A search for neutral heavy leptons (NHLs) has been performed using an instrumented decay channel at the NuTeV (E-815) experiment Fermilab. The data were examined NHLs decaying into muonic final states ( $\ensuremath{\mu}\ensuremath{\mu}\ensuremath{\nu}$, $\ensuremath{\mu}e\ensuremath{\nu}$, $\ensuremath{\mu}\ensuremath{\pi}$, and $\ensuremath{\mu}\ensuremath{\rho}$); no evidence found in 0.25--2.0 GeV mass range. This analysis places limits on mixing of with standard light neutrinos a level...
A high-statistics study by the Columbia-Chicago-Fermilab-Rochester Collaboration of opposite-sign dimuon events induced neutrino-nucleon scattering at Fermilab Tevatron is presented. sample 5044 νμ and 1062 ν¯μ μ∓μ± with Pμ1≥9 GeV/c, Pμ2≥5 30≤Eν≤600 GeV, 〈Q2〉=22.2 GeV2/c2 observed. The data support slow-rescaling model charm production a value mc=1.31±0.24 GeV2/c2. first measurement Q2 dependence nucleon strange quark distribution xs(x) yield Cabibbo-Kobayashi-Maskawa matrix element...
Evidence is presented for a narrow state, called \ensuremath{\xi}, in the decay modes J/\ensuremath{\psi}\ensuremath{\rightarrow}\ensuremath{\gamma}\ensuremath{\xi}, \ensuremath{\xi}\ensuremath{\rightarrow}${K}^{+}$${K}^{\mathrm{\ensuremath{-}}}$, and \ensuremath{\xi}\ensuremath{\rightarrow}${K}_{S}^{0}$${K}_{S}^{0}$. In ${K}^{+}$${K}^{\mathrm{\ensuremath{-}}}$ mode, \ensuremath{\xi} has mass of 2.230\ifmmode\pm\else\textpm\fi{}0.006\ifmmode\pm\else\textpm\fi{}0.014 GeV/${c}^{2}$, width...
Measurements of the exclusive branching fractions B(D0→π−e+νe) and B(D0→K−e+νe), using data collected at ψ(3770) with Mark III detector SLAC e+e− storage ring SPEAR, are used to determine ratio Kobayashi-Maskawa matrix elements ‖Vcd/Vcs∥2 =0.057±+0.0380.015±0.005.Received 30 December 1988DOI:https://doi.org/10.1103/PhysRevLett.62.1821©1989 American Physical Society
We present a new measurement of the difference between nucleon strange and antistrange quark distributions from dimuon events recorded by NuTeV experiment at Fermilab. This analysis is first to use complete next leading order QCD description charm production neutrino scattering. Dimuon in deep inelastic scattering allow direct independent study content nucleon. find positive asymmetry with significance 1.6sigma. also report mass.
The ArgoNeuT collaboration presents the first measurements of inclusive muon neutrino charged current differential cross sections on argon. Obtained in NuMI beamline at Fermilab, results are reported terms outgoing angle and momentum. data consistent with Monte Carlo expectation across full range kinematics sampled, $0^\circ$$<\theta_\mu$$<36^\circ$ 0$<P_\mu$$<25$ GeV/c. Along confirming viability liquid argon time projection chamber technology for detection, allow tests low energy...
In early 2010, the Long-Baseline Neutrino Experiment (LBNE) science collaboration initiated a study to investigate physics potential of experiment with broad set different beam, near- and far-detector configurations. Nine initial topics were identified as scientific areas that motivate construction long-baseline neutrino very large far detector. We summarize justification for each topic estimated performance detector reference report also on optimized beam parameters capability proposed Near...
ProtoDUNE-SP is the single-phase DUNE Far Detector prototype that under construction and will be operated at CERN Neutrino Platform (NP) starting in 2018. ProtoDUNE-SP, a crucial part of effort towards first 10-kt fiducial mass far detector module (17 kt total LAr mass), significant experiment its own right. With liquid argon (LAr) 0.77 kt, it represents largest monolithic LArTPC to built date. It's technical design given this report.
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 questions as it searches leptonic charge-parity symmetry violation, stands ready...