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19922026
Showing 1999 · hep-exShow all

29 papers · 2 filters

hep-ex1999★ 27 cited

Hard Single Diffraction in pbarp Collisions at root-s = 630 and 1800 GeV

The D0 Collaboration, B. Abbott

Using the D0 detector, we have studied events produced in proton-antiproton collisions that contain large forward regions with very little energy deposition (``rapidity gaps'') and…

hep-ex1999★ 78 cited

The Isolated Photon Cross Section in p pbar Collisions at sqrt(s) = 1.8 TeV

D0 Collaboration, B. Abbott

We report a new measurement of the cross section for the production of isolated photons, with transverse energies (ET) above 10 GeV and pseudorapidities |eta| < 2.5, in p pbar coll…

hep-ex1999★ 22 cited

A Measurement of the W to tau+nu Production Cross Section in p-pbar Collisions at sqrt(s) = 1.8 TeV

D0 Collaboration, B. Abbott

We report on a measurement of sigma(p-pbar to W+X) times B(W to tau+nu) in p-pbar collisions at sqrt(s) = 1.8 TeV at the Fermilab Tevatron. The measurement is based on an integrate…

hep-ex1999★ 22 cited

Limits on Anomalous WWgamma and WWZ Couplings from WW/WZ->enujj Production

D0 collaboration, B. Abbott, M. Abolins

Limits on anomalous WWgamma and WWZ couplings are presented from a study of WW/WZ->enujj events in ppbar collisions at sqrt{s}=1.8 TeV. Results from the analysis of data collected…

hep-ex1999★ 37 cited

Probing BFKL Dynamics in the Dijet Cross Section at Large Rapidity Intervals in ppbar Collisions at sqrt{s}=1800 and 630 GeV

D0 Collaboration, B. Abbott

Inclusive dijet production at large pseudorapidity intervals (delta_eta) between the two jets has been suggested as a regime for observing BFKL dynamics. We have measured the dijet…

hep-ex1999★ 12 cited

Limits on Quark Compositeness from High Energy Jets in PbarP Collisions at 1.8 TeV

D0 collaboration, B. Abbott

Events in PbarP collisions at sqrt(s)=1.8 TeV with total transverse energy exceeding 500 GeV are used to set limits on quark substructure. The data are consistent with next-to-lead…

hep-ex1999★ 30 cited

Search for Second Generation Leptoquark Pairs in pbar-p Collisions at sqrt(s) = 1.8 TeV

B. Abbott

We have searched for second generation leptoquark (LQ) pairs in the μμ+jets channel using 94+-5 pb^{-1} of pbar-p collider data collected by the D0 experiment at the Fermilab Tevat…

hep-ex1999★ 29 cited

Search for the Weak Decay of a Lightly Bound H Dibaryon

The KTeV Collaboration

We present results of a search for a neutral, six-quark, dibaryon state called the \h, a state predicted to exist in several theoretical models. Observation of such a state would s…

hep-ex1999★ 41 cited

Differential Production Cross Section of Z Bosons as a Function of Transverse Momentum at sqrt{s}=1.8 TeV

D0 Collaboration

We present a measurement of the transverse momentum distribution of Z bosons produced in ppbar collisions at sqrt{s}=1.8 TeV using data collected by the D0 experiment at the Fermil…

hep-ex1999★ 32 cited

A Measurement of the W Boson Mass Using Electrons at Large Rapidities

D0 collaboration, B. Abbott

We report a measurement of the W boson mass based on an integrated luminosity of 82/pb from p-pbar collisions at sqrt(s) = 1.8 TeV recorded in 1994-1995 by the D0 detector at the F…

hep-ex1999★ 71 cited

Observation of CP Violation in K(L)->pi+pi-e+e- Decays

KTeV Collaboration

We report the first observation of a manifestly CP violating effect in the K(L)->pi+pi-e+e- decay mode. A large asymmetry was observed in the distribution of these decays in the CP…

hep-ex1999★ 10 cited

Evidence of Color Coherence Effects in W+jets Events from ppbar Collisions at sqrt(s) = 1.8 TeV

D0 Collaboration, B. Abbott

We report the results of a study of color coherence effects in ppbar collisions based on data collected by the D0 detector during the 1994-1995 run of the Fermilab Tevatron Collide…

hep-ex1999★ 64 cited

A measurement of the W boson mass using large rapidity electrons

D0 collaboration, B. Abbott

We present a measurement of the W boson mass using data collected by the D0 experiment at the Fermilab Tevatron during 1994--1995. We identify W bosons by their decays to e-nu fina…

hep-ex1999★ 51 cited

Search for the Decay K_L -> pi^0 nu nubar using pi^0 -> e^+ e^- gamma

A. Alavi-Harati

We report on a search for the decay K_L -> pi^0 nu nubar, carried out as a part of E799-II, a rare K_L decay experiment at Fermilab. Within the Standard Model, the K_L -> pi^0 nu n…

hep-ex1999★ 69 cited

Measurement of the inclusive differential cross section for Z bosons as a function of transverse momentum in pbarp collisions at sqrt{s}=1.8 TeV

D0 Collaboration

We present a measurement of the differential cross section as a function of transverse momentum of the Z boson in ppbar collisions at sqrt{s}=1.8 TeV using data collected by the D0…

hep-ex1999★ 42 cited

Small Angle Muon and Bottom Quark Production in pbarp Collisions at sqrt(s) = 1.8 TeV

D0 collaboration, B. Abbott

This Letter describes a measurement of the muon cross section originating from b quark decay in the forward rapidity range 2.4 < y(mu) < 3.2 in pbarp collisions at sqrt(s) = 1.8 Te…

hep-ex1999★ 29 cited

Search for R-parity Violating Supersymmetry in the Dielectron Channel

D0 collaboration, B. Abbott

We report on a search for R-parity violating supersymmetry in p-pbar collisions at sqrt(s) = 1.8 TeV using the D0 detector at Fermilab. Events with at least two electrons and four…

hep-ex1999★ 107 cited

Extraction of the Width of the W Boson from Measurements of sigma(ppbar->W+X)B(W->e nu) and sigma(ppbar->Z+X)B(Z->e e) and their Ratio

D0 Collaboration

We report on measurements of inclusive cross sections times branching fractions into electrons for W and Z bosons produced in ppbar collisions at sqrts=1.8 TeV.From an integrated l…

hep-ex1999★ 369 cited

Observation of Direct CP Violation in K_{S,L} to ππDecays

KTeV Collaboration

We have compared the decay rates of K_L and K_S to π^+ π^- and π^0 π^0 final states using a subset of the data from the KTeV experiment (E832) at Fermilab. We find that the direct-…

hep-ex1999★ 124 cited

The b-bbar Production Cross Section and Angular Correlations in p-pbar Collisions at sqrt(s) = 1.8 TeV

D0 Collaboration, B. Abbott

We present measurements of the b-bbar production cross section and angular correlations using the D0 detector at the Fermilab Tevatron p-pbar Collider operating at sqrt(s) = 1.8 Te…

hep-ex1999★ 15 cited

Search for Second Generation Leptoquark Pairs Decaying to μν+ jets in p-pbar Collisions at sqrt{s} = 1.8 TeV

D0 Collaboration, B. Abbott et al

We report on a search for second generation leptoquarks (LQ) produced in collisions at sqrt{s} = 1.8 TeV using the D0 detector at Fermilab. Second generation leptoquarks…

hep-ex1999★ 21 cited

Light Gluino Search for Decays Containing pi+pi- or pi0 from a Neutral Hadron Beam at Fermilab

A. Alavi-Harati et al, KTeV Collaboration

We report on two null searches, one for the spontaneous appearance of pairs, another for a single , consistent with the decay of a long-lived neutral particle into ha…

hep-ex1999★ 26 cited

Search for bottom squarks in pbarp collisions at sqrt(s)=1.8 TeV

B. Abbott

We report on a search for bottom squarks produced in pbarp collisions at sqrt(s) = 1.8 TeV using the D0 detector at Fermilab. Bottom squarks are assumed to be produced in pairs and…

hep-ex1999★ 16 cited

Measurement of the branching ratio of pi^0 -> e^+e^- using K_L -> 3 pi^0 decays in flight

KTeV Collaboration

The branching ratio of the rare decay pi^0 -> e^+e^- has been measured in E799-II, a rare kaon decay experiment using the KTeV detector at Fermilab. The pi^0's were produced in ful…