K. Goulianos
A5091634788- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Particle Detector Development and Performance
- Dark Matter and Cosmic Phenomena
- Computational Physics and Python Applications
- Cosmology and Gravitation Theories
- Neutrino Physics Research
- Particle Accelerators and Free-Electron Lasers
- Astrophysics and Cosmic Phenomena
- Black Holes and Theoretical Physics
- Atomic and Subatomic Physics Research
- Superconducting Materials and Applications
- Nuclear Physics and Applications
- Nuclear physics research studies
- Medical Imaging Techniques and Applications
- Radiation Detection and Scintillator Technologies
- X-ray Diffraction in Crystallography
- Quantum, superfluid, helium dynamics
- Distributed and Parallel Computing Systems
- Particle accelerators and beam dynamics
- Advanced X-ray Imaging Techniques
- Nuclear reactor physics and engineering
- Electromagnetic Scattering and Analysis
- International Science and Diplomacy
Rockefeller University
2014-2025
Institute of High Energy Physics
2010-2024
University of Antwerp
2024
A. Alikhanyan National Laboratory
2014-2024
Brookhaven National Laboratory
1962-2022
Columbia University
1962-2022
University of Glasgow
2012-2019
University of California, Los Angeles
2005-2017
National and Kapodistrian University of Athens
2011-2017
University of Rochester
1973-2015
This article appears in the following collection:Letters from Past - A PRL Retrospective2008 marked PRL's 50th anniversary. As part of celebrations a collection milestone Letters was started. The contains that have made long-lived contributions to physics, either by announcing significant discoveries, or initiating new areas research.
The production and event topology of three-jet events produced in p¯p collisions at √s=1.8 TeV have been studied with the Collider Detector Fermilab Tevatron Collider. distributions angular variables (ψ∗ cosθ∗) describing energy sharing between jets (x3 x4) are found to agree well tree-level QCD calculations. These predicted different shapes for initial-state subprocesses (quark-antiquark, quark-gluon, gluon-gluon). data consistent small expected contribution from quark-antiquark initial...
We present measurements of the pseudorapidity (η) distribution charged particles (dNchdη) produced within |η|≤3.5 in proton-antiproton collisions at √s 630 and 1800 GeV. measure dNchdη η=0 to be 3.18±0.06(stat)±0.10(syst) GeV, 3.95±0.03 (stat)±0.13(syst) Many systematic errors ratio two energies cancel, we 1.26±0.01±0.04 for GeV that |η|≤3. Comparing lower-energy data, observe an increase faster than ln(s) η=0.Received 2 October 1989DOI:https://doi.org/10.1103/PhysRevD.41.2330©1990 American...
Measurements of inclusive transverse-momentum spectra for charged particles produced in proton-antiproton collisions at √2 630 and 1800 GeV are presented compared with data taken lower energies.Received 8 June 1988DOI:https://doi.org/10.1103/PhysRevLett.61.1819©1988 American Physical Society
We present the FP420 R&D project, which has been studying key aspects of development and installation a silicon tracker fast-timing detectors in LHC tunnel at 420 m from interaction points ATLAS CMS experiments. These would measure precisely very forward protons conjunction with corresponding central as means to study Standard Model (SM) physics, search for characterise new physics signals. This report includes detailed description case detector and, particular, measurement Central Exclusive...
A search for the top quark in p\ifmmode\bar\else\textasciimacron\fi{}p collisions at a center-of-mass energy of 1.8 TeV using Collider Detector Fermilab is described. study events selected by requiring an energetic electron, missing transverse energy, and two or more jets excludes 95% confidence level standard-model production decay tt\ifmmode\bar\else\textasciimacron\fi{} pairs if top-quark mass between 40 77 GeV/${c}^{2}$. The observed electron + multijet data are consistent with W-boson...
We present results from searches for the top quark pp\ifmmode\bar\else\textasciimacron\fi{} collisions at Fermilab Tevatron Collider. The data sample was collected during 1988--89 with Collider Detector and has an integrated luminosity of 4.1 ${\mathrm{pb}}^{\mathrm{\ensuremath{-}}1}$. Our previous search e\ensuremath{\mu} final states tt\ifmmode\bar\else\textasciimacron\fi{}\ensuremath{\rightarrow}e\ensuremath{\nu}b \ensuremath{\mu}\ensuremath{\nu}b\ifmmode\bar\else\textasciimacron\fi{}...
We have determined mW=79.91±0.39 GeV/c2 from an analysis of W→eν and W→μν data the Collider Detector at Fermilab in p¯p collisions a c.m. energy √s =1.8 TeV. This result, together with world-average Z mass, determines weak mixing angle to be sin2θW=0.232±0.008. Bounds on top-quark mass are discussed.Received 13 August 1990DOI:https://doi.org/10.1103/PhysRevLett.65.2243©1990 American Physical Society
From measurements of proton-proton elastic scattering at very small momentum transfers where the nuclear and Coulomb amplitudes interfere, we have deduced values $\ensuremath{\rho}$, ratio real to imaginary forward amplitude, for energies from 50 400 GeV. We find that $\ensuremath{\rho}$ increases -0.157 \ifmmode\pm\else\textpm\fi{} 0.012 51.5 GeV +0.039 393 GeV, crossing zero 280 60
The slope $b(s)$ of the forward diffraction peak $p\ensuremath{-}p$ elastic scattering has been measured in momentum-transfer-squared range $0.005\ensuremath{\lesssim}|t|\ensuremath{\lesssim}0.09$ ${(\mathrm{G}\mathrm{e}\mathrm{V}/\mathit{c})}^{2}$ and at incident proton energies from 8 to 400 GeV. We find that increases with $s$, interval $100\ensuremath{\lesssim}s\ensuremath{\lesssim}750$ ${(\mathrm{GeV})}^{2}$ it can be fitted by form...
The goal of this report is to give a comprehensive overview the rich field forward physics, with special attention topics that can be studied at LHC.The starts presenting selection Monte Carlo simulation tools currently available, chapter 2, then enters phenomenology QCD low, 3, and high, 4, momentum transfer, while unique scattering conditions central exclusive production are analyzed in 5.The last two experimental topics, Cosmic Ray Heavy Ion physics presented 6 7 respectively.Chapter 8...
A search for tt\ifmmode\bar\else\textasciimacron\fi{}\ensuremath{\rightarrow}e\ensuremath{\mu}+X in pp\ifmmode\bar\else\textasciimacron\fi{} collisions at s\ensuremath{\surd}\ifmmode\bar\else\textasciimacron\fi{} TeV is described. The production and decay of top-quark--antiquark pairs considered the context standard model. analysis based on data with an integrated luminosity 4.4 ${\mathrm{pb}}^{\mathrm{\ensuremath{-}}1}$ recorded Collider Detector Fermilab. An upper limit...
We have determined mW=79.91±0.39 GeV/c2 from an analysis of W→eν and W→μν data the Collider Detector at Fermilab in ¯pp collisions √s=1.8 TeV. From this result world-average Z mass, weak mixing angle is to be sin2θW=0.232±0.008. An upper bound on top-quark mass derived discussed.Received 13 August 1990DOI:https://doi.org/10.1103/PhysRevD.43.2070©1991 American Physical Society
An analysis of ${Z}^{0}$\ensuremath{\rightarrow}${e}^{+}$${e}^{\mathrm{\ensuremath{-}}}$ and ${Z}^{0}$\ensuremath{\rightarrow}${\ensuremath{\mu}}^{+}$${\ensuremath{\mu}}^{\mathrm{\ensuremath{-}}}$ data from the Collider Detector at Fermilab in p\ifmmode\bar\else\textasciimacron\fi{}p collisions \ensuremath{\surd}s =1.8 TeV yields a mass ${Z}^{0}$ boson ${M}_{Z}$=90.9\ifmmode\pm\else\textpm\fi{}0.3 (stat+syst)\ifmmode\pm\else\textpm\fi{}0.2 (scale) GeV/${c}^{2}$ width...
We have observed the elastic neutral-current reaction ${\ensuremath{\nu}}_{\ensuremath{\mu}}+p\ensuremath{\rightarrow}{\ensuremath{\nu}}_{\ensuremath{\mu}}+p$ and compared it to quasielastic ${\ensuremath{\nu}}_{\ensuremath{\mu}}+n\ensuremath{\rightarrow}{\ensuremath{\mu}}^{\ensuremath{-}}+p$. measured ratio of two reactions be 0.23 \ifmmode\pm\else\textpm\fi{} 0.09.
An analysis of high-transverse-momentum electrons using data from the Collider Detector at Fermilab (CDF) ¯pp collisions √s=1800 GeV yields values production cross section times branching ratio for W and Z0 bosons σ(¯pp→WX→eνX)=2.19±0.04(stat)±0.21(syst) nb σ(¯pp→Z0X→e+e−X)=0.209±0.013(stat)±0.017(syst) nb. Detailed descriptions CDF electron identification, background, efficiency, acceptance are included. Theoretical predictions sections that include a mass top quark larger than mass,...
Inclusive jet production at √s=1.8 TeV has been measured in the CDF detector Fermilab Tevatron ¯pp Collider. Jets with transverse energies (Et) up to 250 GeV have observed. The Et dependence of inclusive cross section is consistent leading-order quantum-chromodynamic calculations, and comparison lower-energy data shows deviations from scaling QCD. A lower limit 700 (95% confidence level) placed on quark compositeness scale parameter Λc associated an effective contact interaction.Received 3...
We present results of searches for the top quark in $p\overline{p}$ collisions at $\sqrt{s}=1.8$ TeV. The data sample was collected during 1988-1989 Fermilab Tevatron Collider and has an integrated luminosity 4.1 ${\mathrm{pb}}^{\ensuremath{-}1}$. have extended our previous search $e\ensuremath{\mu}$ final states to include $\mathrm{ee}$ $\ensuremath{\mu}\ensuremath{\mu}$ channels. In addition, we searched a low-transverse-momentum muon as tag bottom decay events with lepton least two jets....
We report differential cross sections for $h+p\ensuremath{\rightarrow}X+p$ ($h={\ensuremath{\pi}}^{\ifmmode\pm\else\textpm\fi{}},{K}^{\ifmmode\pm\else\textpm\fi{}},{p}^{\ifmmode\pm\else\textpm\fi{}}$) at 100 and 200 GeV/c in the region $0.025<|t|<0.095$ ${(\mathrm{G}\mathrm{e}\mathrm{V}/\mathit{c})}^{2}$ $\frac{{{M}_{X}}^{2}}{s}<0.1$.
We report results from a measurement of the inclusive diffraction dissociation photons on hydrogen, \ensuremath{\gamma}p\ensuremath{\rightarrow}Xp, in range 75${p}_{\ensuremath{\gamma}}$148 GeV/c, 0.02\ensuremath{\Vert}t\ensuremath{\Vert}0.1 (GeV/c${)}^{2}$, and ${M}_{X}$${\mathrm{}}^{2}$/s0.1. Our data show an exponential t dependence dominant 1/${M}_{X}$${\mathrm{}}^{2}$ behavior for ${M}_{X}$${\mathrm{}}^{2}$>4 ${\mathrm{GeV}}^{2}$. test finite-mass sum rule and, by comparing...