A5023031029- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Particle Detector Development and Performance
- Mathematics Education and Teaching Techniques
- History and Theory of Mathematics
- Mathematical and Theoretical Analysis
- Dark Matter and Cosmic Phenomena
- Statistics Education and Methodologies
- Cosmology and Gravitation Theories
- advanced mathematical theories
- Cognitive and developmental aspects of mathematical skills
- Radiation Detection and Scintillator Technologies
- CCD and CMOS Imaging Sensors
- Radiation Effects in Electronics
- Science Education and Pedagogy
- Teaching and Learning Programming
- Historical Philosophy and Science
- Educational Assessment and Pedagogy
- X-ray Spectroscopy and Fluorescence Analysis
- Philosophy and History of Science
- Neutrino Physics Research
- Black Holes and Theoretical Physics
- Atomic and Subatomic Physics Research
- Elite Sociology and Global Capitalism
University of Idaho
2015-2024
Lawrence Berkeley National Laboratory
1999-2020
Uniwersytet Komisji Edukacji Narodowej w Krakowie
2018
Institute of Mathematics
2018
Bar-Ilan University
2018
MSD (Serbia)
2011
Fisheries Research Institute of Slovenia
2011
Wallenberg Wood Science Center
2011
National Science and Technology Council
2011
Turkish Atomic Energy Authority
2011
We summarize a search for the top quark with Collider Detector at Fermilab (CDF) in sample of p¯p collisions √s =1.8 TeV an integrated luminosity 19.3 pb−1. find 12 events consistent either two W bosons, or boson and least one b jet. The probability that measured yield is background 0.26%. Though statistics are too limited to establish firmly existence quark, natural interpretation excess it due tt¯ production. Under this assumption, constrained fits individual mass 174±10+13−12 GeV/c2....
We report a measurement of the proton-antiproton total cross section ${\mathrm{\ensuremath{\sigma}}}_{\mathit{T}}$ at c.m.s. energies \ensuremath{\surd}s =546 and 1800 GeV. Using luminosity-independent method, we find ${\mathrm{\ensuremath{\sigma}}}_{\mathit{T}}$=61.26\ifmmode\pm\else\textpm\fi{}0.93 mb GeV 80.03\ifmmode\pm\else\textpm\fi{}2.24 =1800 In this energy range, ratio ${\mathrm{\ensuremath{\sigma}}}_{\mathrm{el}}$/${\mathrm{\ensuremath{\sigma}}}_{\mathit{T}}$ increases from...
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
Kinematic properties of four-jet events produced in $p\overline{p}$ collisions at $\sqrt{s}=1.8$ TeV have been studied using data with an integrated luminosity 325 ${\mathrm{nb}}^{\ensuremath{-}1}$ collected the Collider Detector Fermilab during 1988-1989 run. The individual jet ${p}_{T}$ spectra and angles between each pair are compared to predictions leading-order quantum chromodynamics for double gluon bremsstrahlung process good agreement is observed. In addition, a search parton...
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...
Antiproton-proton elastic scattering was measured at c.m.s. energies √s =546 and 1800 GeV in the range of four-momentum transfer squared 0.025<-t<0.29 GeV2. The data are well described by exponential form ebt with a slope b=15.28±0.58 (16.98±0.25) GeV−2 (1800) GeV. cross sections are, respectively, σel=12.87±0.30 19.70±0.85 mb.Received 5 August 1993DOI:https://doi.org/10.1103/PhysRevD.50.5518©1994 American Physical Society
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
This paper presents the first direct measurement of $B$ meson differential cross section, $d\sigma/dp_T$, in $p\bar{p}$ collisions at $\sqrt{s}=1.8$ TeV using a sample $19.3 \pm 0.7$ pb$^{-1}$ accumulated by Collider Detector Fermilab (CDF). The section is measured central rapidity region $|y| < 1$ for $p_T(B) > 6.0$ GeV/$c$ fully reconstructing decays $B^{+}\to J/\psi K^{+}$ and $B^{0}\to K^{*0}(892)$, where $J/\psi \to \mu^+\mu^-$ $K^{*0} K^+ \pi^-$. A comparison made to theoretical QCD...
We report a measurement of the diffraction dissociation differential cross section ${\mathit{d}}^{2}$${\mathrm{\ensuremath{\sigma}}}_{\mathrm{SD}}$/${\mathit{dM}}^{2}$dt for p\ifmmode\bar\else\textasciimacron\fi{}p\ensuremath{\rightarrow}p\ifmmode\bar\else\textasciimacron\fi{}X at \ensuremath{\surd}s =546 and 1800 GeV, ${\mathit{M}}^{2}$/s0.2 0\ensuremath{\le}-t\ensuremath{\le}0.4 ${\mathrm{GeV}}^{2}$. Our results are compared to theoretical predictions extrapolations from experimental lower...
A search for tt\ifmmode\bar\else\textasciimacron\fi{}\ensuremath{\rightarrow}e\ensuremath{\mu}+X in pp\ifmmode\bar\else\textasciimacron\fi{} collisions at s\ensuremath{\surd}\ifmmode\bar\else\textasciimacron\fi{} TeV is described. The production and decay of top-quark--antiquark pairs considered the context standard model. analysis based on data with an integrated luminosity 4.4 ${\mathrm{pb}}^{\mathrm{\ensuremath{-}}1}$ recorded Collider Detector Fermilab. An upper limit...
We have determined mW=79.91±0.39 GeV/c2 from an analysis of W→eν and W→μν data the Collider Detector at Fermilab in ¯pp collisions √s=1.8 TeV. From this result world-average Z mass, weak mixing angle is to be sin2θW=0.232±0.008. An upper bound on top-quark mass derived discussed.Received 13 August 1990DOI:https://doi.org/10.1103/PhysRevD.43.2070©1991 American Physical Society
An analysis of ${Z}^{0}$\ensuremath{\rightarrow}${e}^{+}$${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...
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,...
This is a case study of an undergraduate calculus student's nonstandard conceptions the real number line. Interviews with student reveal robust line that include infinitesimal and infinite quantities distances. Similarities between these those G. W. Leibniz are discussed illuminated by formalization infinitesimals in A. Robinson's analysis. These similarities suggest not mere misconceptions, but conceptions, pieces knowledge could be built into system numbers proven to as mathematically...
The ABCs of the History Infinitesimal Mathematics history infinitesimal mathematics are in need clarification. To what extent does famous dictum “history is always written by victors” apply to as well? A convenient starting point a remark made Felix Klein his book Elementary from an Advanced Standpoint (Klein [72, p. 214]). wrote that there not one but two separate tracks for development analysis:
Charged- and neutral-particle production from 400-GeV/c $\mathrm{pp}$ collisions are measured simultaneously using the Fermilab 15-ft bubble chamber. The ${\ensuremath{\pi}}^{0}$ ${K}^{0}$ cross sections rising at energies, while ${\ensuremath{\Lambda}}^{0}$ section remains fairly constant. Similarly, average number of ${\ensuremath{\pi}}^{0}$'s ${K}^{0}$'s increases as a function negative particles in an event, yet no such dependence is noted for ${\ensuremath{\Lambda}}^{0}$'s. ratio to...
A search for the top quark in p¯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 standardmodel production decay tt¯ pairs if top-quark mass between 40 77 GeV/c2. The observed electron+multijet data are consistent with W-boson production.Received 12 July 1990DOI:https://doi.org/10.1103/PhysRevD.43.664©1991...
Author(s): Fowler, William B.; Birge, Robert W.; Eberhard, Phillippe; Ely, Robert; Good, Myron L.; Powell, Wilson M.; Ticho, Harold K.