Showing papers by "M. J. Shochet published in 1989"
TL;DR: In this article, an analysis of the data from the Fermilab Collider Detector is presented, which yields a mass of the ${Z}^{0}$ boson of ${M}_{Z}$=90.0 GeV.
Abstract: 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 at \ensuremath{\surd}s =1.8 TeV yields a mass of the ${Z}^{0}$ boson of ${M}_{Z}$=90.9\ifmmode\pm\else\textpm\fi{}0.3 (stat+syst)\ifmmode\pm\else\textpm\fi{}0.2 (scale) GeV/${c}^{2}$ and a width of ${\ensuremath{\Gamma}}_{z}$=3.8\ifmmode\pm\else\textpm\fi{}0.8\ifmmode\pm\else\textpm\fi{}1.0 GeV.
51 citations
TL;DR: In this article, a lower bound of 700 GeV (95% confidence level) is placed on the quark compositeness scale parameter Λ c associated with an effective contact interaction.
Abstract: Inclusive jet production at √ s=1.8 TeV has been measured in the CDF detector at the Fermilab Tevatron p p Collider. Jets with transverse energies (E t ) up to 250 GeV have been observed. The E t dependence of the inclusive jet cross section is consistent with leading-order quantum-chromodynamic calculations, and comparison with lower-energy data shows deviations from scaling consistent with QCD. A lower limit of 700 GeV (95% confidence level) is placed on the quark compositeness scale parameter Λ c associated with an effective contact interaction.
40 citations
TL;DR: A search was made for heavy stable charged particles produced in 1.8-TeV proton-antiproton collisions but no such particles were found in 26.2 nb{sup {minus}1} of data.
Abstract: A search was made for heavy stable charged particles produced in 1.8-TeV proton-antiproton collisions. No such particles were found in 26.2 nb{sup {minus}1} of data. Cross-section limits are presented and mass limits of the order of 100 GeV are set for particles containing excited quarks in higher color representations.
22 citations
TL;DR: In this article, the authors measured dijet angular distributions at 1.8 TeV with the Collider Detector at Fermilab and the Tevatron /ital p/bar /p/ Collider and found agreement with leading-order QCD.
Abstract: We have measured dijet angular distributions at ..sqrt../ital s/ =1.8 TeV with the Collider Detector at Fermilab and the Tevatron /ital p/bar /p/ Collider and find agreement with leading-order QCD. By comparing the distribution for the highest dijet invariant masses with the prediction of a model of quark compositeness, we set a lower limit on the associated scale parameter ..lambda../sub /ital c// at 330 GeV (95% C.L.).
15 citations
TL;DR: The cross section for the production and subsequent decay to electron and neutrino of the W intermediate vector boson has been measured in 1.8-TeV p-barp collisions at the Fermilab Tevatron Collider.
Abstract: The cross section for the production and subsequent decay to electron and neutrino of the W intermediate vector boson has been measured in 1.8-TeV p-barp collisions at the Fermilab Tevatron Collider. An analysis of events with missing transverse energy greater than 25 GeV and with an electron of transverse energy greater than 15 GeV from a datum sample of 25.3 nb/sup -1/ gives sigmaB = 2.6 +- 0.6 +- 0.5 nb.
13 citations
TL;DR: In this article, the authors measured the transverse-momentum spectra of the mesons produced by proton-antiproton collisions at the radical-ital s of the proton and anticonvolutional hadron.
Abstract: Measurements of inclusive transverse-momentum spectra for {ital K}{sub {ital S}}{sup 0} mesons produced in proton-antiproton collisions at {radical}{ital s} of 630 and 1800 GeV are presented and compared with data taken at lower energies. The ratio, as a function of {ital p}{sub {ital T}}, of the cross section for {ital K}{sub {ital S}}{sup 0} to that for charged hadrons is very similar to what is observed at lower energies. At 1800 GeV, we calculate the strangeness-suppression factor {lambda}=0.40{plus minus}0.05.
11 citations
01 Jan 1989
TL;DR: In this paper, a few topics each from elastic and diffractive scattering, low to moderate Q2 physics, QCD scattering, intermediate vector bosons, heavy quarks, and the search for new particles are selected.
Abstract: During the past year results have been presented from mature analyses of CERN data as well as from the first run of the Tevatron Collider at Fermi lab. I have selected a few topics each from elastic and diffractive scattering, low to moderate Q2 physics, QCD scattering, intermediate vector bosons, heavy quarks, and the search for new particles. There are many other interesting results which I cannot present because of the time limitation.