E. G. Stern
A5036300208- Particle physics theoretical and experimental studies
- Neutrino Physics Research
- Particle accelerators and beam dynamics
- Particle Accelerators and Free-Electron Lasers
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Particle Detector Development and Performance
- Superconducting Materials and Applications
- Dark Matter and Cosmic Phenomena
- Astrophysics and Cosmic Phenomena
- Atomic and Subatomic Physics Research
- Gyrotron and Vacuum Electronics Research
- Plasma Diagnostics and Applications
- Magnetic confinement fusion research
- Nuclear reactor physics and engineering
- Advanced NMR Techniques and Applications
- Electron and X-Ray Spectroscopy Techniques
- Computational Physics and Python Applications
- Muon and positron interactions and applications
- Advancements in Photolithography Techniques
- Cold Atom Physics and Bose-Einstein Condensates
- Nuclear Physics and Applications
- Photocathodes and Microchannel Plates
- Radiation Detection and Scintillator Technologies
- Fusion materials and technologies
Fermi National Accelerator Laboratory
2012-2024
Columbia University
1996-2006
Janus University
2004
State University of New York
1987-2004
Ohio University
2004
University of Dallas
2004
Santa Clara University
2004
University of Arkansas at Little Rock
2004
Saybrook University
2004
Duquesne University
2004
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.
Measurements of the semileptonic weak-neutral-current reactions νμp→νμp and ν¯μp→ν¯μp are presented. The experiment was performed using a 170-metric-ton high-resolution target detector in BNL wide-band neutrino beam. High-statistics samples yield absolute differential cross sections dσ(νμp)/dQ2 dσ(ν¯μp)/dQ2. A measurement axial-vector form factor GA(Q2) is also results good agreement with standard model SU(2)×U(1). parameter sin2thetaW determined to be...
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 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...
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...
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 NuTeV Collaboration recently reported a value of ${\mathrm{sin}}^{2}{\ensuremath{\theta}}_{W}$ measured in neutrino-nucleon scattering that is 3 standard deviations above the model prediction. This result derived assuming (1) strange sea quark-antiquark symmetric, $s(x)=\overline{s}(x),$ and (2) up down quark distributions are symmetric under simultaneous interchange $u\ensuremath{\leftrightarrow}d$ $p\ensuremath{\leftrightarrow}n.$ We report impact violations these symmetries on discuss...
We report on the extraction of structure functions F2 and DeltaxF(3) = xF(nu)(3)-xF(nu;)(3) from CCFR nu(mu)-Fe nu;(mu)-Fe differential cross sections. The is performed in a physics model-independent (PMI) way. This first measurement DeltaxF(3), which useful testing models heavy charm production, higher than current theoretical predictions. ratio values measured nu(mu) mu scattering agreement (within 5%) with predictions next-to-leading-order parton distribution using massive production...
Measurements have been made of the reactions νen→e−p and νμn→μ−p in a detector located an effective distance 96 m from neutrino source. These measurements yield directly energy-dependent ratio fluxes [Φ(E(νe))/Φ(E(νμ))]obs incident on detector. When combined with estimate flux emanating source [Φ(E(νe))/Φ(E(νμ))]calc, measured provides upper limit strength mixing between νμ νe. We obtain sin22α<3.4×10−3 (90% C.L.) large mass difference Δm2 (≡‖m12-m22‖) eigenstates, m1 m2; product sin2α<0.43...
Total and differential cross sections for ${\ensuremath{\nu}}_{\ensuremath{\mu}}e\ensuremath{\rightarrow}{\ensuremath{\nu}}_{\ensuremath{\mu}}e$ ${\overline{\ensuremath{\nu}}}_{\ensuremath{\mu}}e\ensuremath{\rightarrow}{\overline{\ensuremath{\nu}}}_{\ensuremath{\mu}}e$ are measured. Values the model-independent neutral-current couplings of electron found to be ${g}_{V}=\ensuremath{-}0.107\ifmmode\pm\else\textpm\fi{}0.035(\mathrm{stat})\ifmmode\pm\else\textpm\fi{}0.028(\mathrm{syst})$...
Measurements of the ratio R purely leptonic weak neutral-current cross sections σ(νμe→νμe)σ(¯νμe→¯νμe) and absolute value σ(¯νμe→¯νμe) are reported. These yield R=1.38+0.40−0.31(stat)±0.17(syst) σ(¯νμe→¯νμe)E¯νμ=[1.16±0.20(stat)±0.14(syst)]×10−42 cm2/GeV. This determines fundamental parameter to be sin2θW=0.209±0.029(stat)±0.013(syst).Received 17 September 1984DOI:https://doi.org/10.1103/PhysRevLett.54.18©1985 American Physical Society
Limits on $\nu_\mu (\overline{\nu}_\mu) \to \nu_e (\overline{\nu}_e)$ oscillations based a statistical separation of $\nu_e N$ charged current interactions in the CCFR detector at Fermilab are presented. $\nu_e$ identified by difference longitudinal shower energy deposition pattern N \rightarrow eX$ versus \nu_\mu X$ interactions. Neutrino energies range from 30 to 600 GeV with mean 140 GeV, and $\nu_\mu$ flight lengths vary 0.9 km 1.4 km. The lowest 90% confidence upper limit $sin^2...
The result of a measurement $\ensuremath{\sigma}({\ensuremath{\nu}}_{\ensuremath{\mu}}+{e}^{\ensuremath{-}}\ensuremath{\rightarrow}{\ensuremath{\nu}}_{\ensuremath{\mu}}+{e}^{\ensuremath{-}})$ is presented. With use neutrinos mean energy 1.5 GeV from the Brookhaven National Laboratory alternating gradient synchrotron and massive, active, high-resolution detector, signal 51\ifmmode\pm\else\textpm\fi{}9 events with an average signal-to-background ratio greater than 2:1 observed....
The weak coupling constants of the electron, ${g}_{V}^{e}$ and ${g}_{A}^{e}$, are determined from measurements total differential cross sections for reaction ${\ensuremath{\nu}}_{\ensuremath{\mu}}$e\ensuremath{\rightarrow}${\ensuremath{\nu}}_{\ensuremath{\mu}}$e. data also place limits interest on magnitudes a neutrino charge radius possible magnetic dipole moment.
We present limits on $ν_μ(\barν_μ)\toν_τ(\barν_τ)$ and $ν_μ(\barν_μ)\toν_e(\barν_e)$ oscillations based a study of inclusive $νN$ interactions performed using the CCFR massive coarse grained detector in FNAL Tevatron Quadrupole Triplet neutrino beam. The sensitivity to is from difference longitudinal energy deposition pattern $ν_μN$ versus $ν_τN$ or $ν_e N$ charged current interactions. $ν_μ$ energies ranged 30 500 GeV with mean 140 GeV. minimum maximum flight lengths are 0.9 km 1.4...
We present evidence for the diffractive processes νμFe→μ−D+S(D*S)Fe and ¯νμFe→μ+D−S(D*S)Fe using Fermilab SSQT neutrino beam Lab E detector. The data are consistent with standard model production of trident reactions νμFe→νμμ−μ+Fe ¯νμFe→¯νμμ+μ−Fe. see no neutral-current J/ψ via either or deep inelastic scattering mechanisms.Received 24 September 1999DOI:https://doi.org/10.1103/PhysRevD.61.092001©2000 American Physical Society
Limits on nu(mu)-->nu(e) and oscillations are extracted using the NuTeV detector with sign-selected nu(mu) beams. In mode, for case of sin(2)2alpha = 1, Delta(m)(2)>2.6 eV(2) is excluded, Delta(m)(2)>>1000 eV(2), sin(2)2alpha>1.1 x 10(-3). The data exclude high Delta(m)(2) end oscillation parameters favored by LSND experiment without need to assume that nu same. We present most stringent experimental limits nu(mu)(nu(mu))-->nu(e)(nu(e)) in large region.
This paper describes measurements of the semileptonic weak-neutral-current reactions $\ensuremath{\nu}_{\ensuremath{\mu}}p\ensuremath{\rightarrow}\ensuremath{\nu}_{\ensuremath{\mu}}p$ and $\overline{\ensuremath{\nu}}_{\ensuremath{\mu}}p\ensuremath{\rightarrow}\overline{\ensuremath{\nu}}_{\ensuremath{\mu}}p$ which yield absolute differential cross sections $\frac{d\ensuremath{\sigma}(\ensuremath{\nu}_{\ensuremath{\mu}}p)}{d{Q}^{2}}$...
The neutrino fluxes \ensuremath{\varphi}(E(${\ensuremath{\nu}}_{\ensuremath{\mu}}$)), \ensuremath{\varphi}(E(\ensuremath{\nu}${\ifmmode\bar\else\textasciimacron\fi{}}_{\ensuremath{\mu}}$)), and \ensuremath{\varphi}(E(${\ensuremath{\nu}}_{e}$)) in the Brookhaven Alternating Gradient Synchrotron wide-band beams have been determined by measurements of quasielastic interactions observed a massive, high-resolution detector. These are accurately reproduced Monte Carlo calculations.
Measurements of the combined differential cross sections d\ensuremath{\sigma}/dy for ${\ensuremath{\nu}}_{\ensuremath{\mu}}$ and \ensuremath{\nu}${\ifmmode\bar\else\textasciimacron\fi{}}_{\ensuremath{\mu}}$ scattering by electrons yield value ${\mathrm{sin}}^{2}$${\mathrm{\ensuremath{\theta}}}_{\mathrm{W}}$=0.195\ifmmode\pm\else\textpm\fi{}0.018\ifmmode\pm\else\textpm\fi{}0.013. This value, at ${Q}^{2}$\ensuremath{\simeq}1\ifmmode\times\else\texttimes\fi{}${10}^{\mathrm{\ensuremath{-}}3}$...