[en] We present the results of searches for additional gauge bosons beyond the W and Z bosons using the 1992-1993 Tevatron data set collected with the D0 detector. The signatures studied are W' → eν, W' → τν with τ → eν bar ν, assuming stable neutrinos; W_R → e + X and W_R → eejj, assuming massive neutrinos; and Z' → ee. Lower limits on the W' mass and Z' mass at the 95% confidence level, and the mass exclusion contour in the W_R mass vs. neutrino mass plane are presented

No abstract available

[en] The objectives of the High Level Trigger Group were: a) A comparison of the relative merits of the analogue and digital electronics for trigger implementations. b) An examination of the implementation of specific triggers. c) Making of estimates of the effect of detector granularity on the trigger. d) Making of estimates of the effects of the high interaction rates at the SSC on the performance of these triggers. Because of limited time and manpower, the group decided to restrict itself to topics b) and d) above

[en] We describe the results of beam tests of three uranium-liquid argon calorimeter modules constructed for the D0 detector at the Fermilab Tevatron collider. As part of the calibration procedure, these modules were exposed to beams of electrons, pions and muons between 10 and 150 GeV/c before their installation in the end calorimeter of the completed D0 detector. We obtain an electromagnetic sampling resolution of 15.7%/√E and constant term of 0.3%. The hadronic sampling resolution is 45%/√E (degraded to 50%/√E by the effects of upstream material) and the constant term is 4%. The calorimeter is linear to 0.5%, and the electromagnetic to hadronic response ratio is between 1.02 and 1.09 over this range of momenta. For an electron efficiency of 95% we obtain a rejection factor against pions of ∝900-3000 for particles in the momentum range between 50 and 150 GeV/c. We also compare our results with the predictions of a detailed Monte Carlo simulation. (orig.)

[en] A search for fourth generation neutral heavy leptons (ν₄) in W decays was carried out the D0 detector at the Fermilab Tevatron at √ bar s = 1.8 TeV. The ν₄ is assumed to be produced via mixing with the first generation neutrino only. We looked for a three electron final state event topology. The data used in this analysis represent 12.2 pb^-1 taken during the 1992--1993 run. No candidates were found. We set a preliminary limit beyond the LEP limit for the considered mixing case on the |U_e4|² - m_ν4 plane

[en] We report on a preliminary measurement of the inclusive dimuon cross section in p bar p collisions at √s = 1.8 TeV using the D0 detector at the Fermilab Tevatron. From these results, we extract the inclusive b-quark production cross section for the kinematic range |y^b| < 1.0 and 9 GeV/c < p_T^bmin < 25 GeV/c. The difference in azimuthal angle in the transverse plane for dimuon pairs from b bar b production is also shown

[en] The DOe detector is a large general purpose detector for the study of short-distance phenomena in high energy antiproton-proton collisions, now in operation at the Fermilab Tevatron collider. The detector focusses upon the detection of electrons, muons, jets and missing transverse momentum. We describe the design and performance of the major elements of the detector, including the tracking chambers, transition radiation detector, liquid argon calorimetry and muon detection. The associated electronics, triggering systems and data acquisition systems are presented. The global mechanical, high voltage, and experiment monitoring and control systems which support the detector are described. We also discuss the design and implementation of software and software support systems that are specific to DOe. (orig.)

[en] The D0 experiment has measured the γ differential cross section in p bar p collisions at √s = 1.8 TeV for |y^γ| < 0.7. We find the measured cross section to be a factor of five larger than the O(α_s³) QCD prediction for p_T^γ > 5 GeV/c

[en] The LAMPF II rates for various neutrino-induced reactions are discussed for a 16-GeV and a 32-GeV primary proton beam. Neutrino production spectra are estimated by scaling Fermilab spectra to LAMPF II energies

[en] The 4π Detector Working Group tried to address two major questions: can general 4π detectors be built for the SSC that will be able to study rare processes at center-of-mass energies of 40 TeV and at luminosities of 10³³ cm^-2 sec^-1; what are realistic cost estimates for such detectors? The general conclusions of these studies were that these types of detectors could be built, would be able to do physics under these conditions, and would each cost between 200 and 300 million dollars