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Articles 1 - 7 of 7
Full-Text Articles in Physical Sciences and Mathematics
Cross Section For B-Jet Production In P̅P Collisions At √S = 1.8 Tev, B. Abbott, Gregory R. Snow, D0 Collaboration
Cross Section For B-Jet Production In P̅P Collisions At √S = 1.8 Tev, B. Abbott, Gregory R. Snow, D0 Collaboration
Gregory Snow Publications
Bottom-quark production in p̅p collisions at √s = 1.8 TeV is studied with 5 pb-1 of data collected in 1995 by the D0 detector at the Fermilab Tevatron Collider. The differential production cross section for b jets in the central rapidity region (∣yb∣< 1) as a function of jet transverse energy is extracted from a muon-tagged jet sample. Within experimental and theoretical uncertainties, D0 results are found to be higher than, but compatible with, next-to-leading-order QCD predictions.
Measurement Of The W Boson Mass Using Large Rapidity Electrons, B. Abbott, Gregory R. Snow, D0 Collaboration
Measurement Of The W Boson Mass Using Large Rapidity Electrons, B. Abbott, Gregory R. Snow, D0 Collaboration
Gregory Snow Publications
We present a measurement of the W boson mass using data collected by the DØ. experiment at the Fermilab Tevatron during 1994–1995. We identify W bosons by their decays to en final states where the electron is detected in a forward calorimeter. We extract the W boson mass MW by fitting the transverse mass and transverse electron and neutrino momentum spectra from a sample of 11 089 W→eν decay candidates. We use a sample of 1687 dielectron events, mostly due toZ→ee decays, to constrain our model of the detector response. Using the forward …
Report Of The Qcd Tools Working Group, R. K. Ellis, R. Field, S. Mrenna, Gregory R. Snow, C. Balazs, E. Boos, J. Campbell, R. Demina, J. Huston, C-Y. P. Ngan, A. Petrelli, I. Puljak, T. Sjostrand, J. Smith, D. Stuart, K. Sumorok
Report Of The Qcd Tools Working Group, R. K. Ellis, R. Field, S. Mrenna, Gregory R. Snow, C. Balazs, E. Boos, J. Campbell, R. Demina, J. Huston, C-Y. P. Ngan, A. Petrelli, I. Puljak, T. Sjostrand, J. Smith, D. Stuart, K. Sumorok
Gregory Snow Publications
We report on the activities of the “QCD Tools for heavy flavors and new physics searches” working group of the Run II Workshop on QCD and Weak Bosons. The contributions cover the topics of improved parton showering and comparisons of Monte Carlo programs and resummation calculations, recent developments in Pythia, the methodology of measuring backgrounds to new physics searches, variable flavor number schemes for heavy quark electro-production, the underlying event in hard scattering processes, and the Monte Carlo MCFM for NLO processes.
Search For New Physics In Eμx Data At Dø Using Sleuth: A Quasi-Model-Independent Search Strategy For New Physics, B. Abbott, Gregory R. Snow, D0 Collaboration
Search For New Physics In Eμx Data At Dø Using Sleuth: A Quasi-Model-Independent Search Strategy For New Physics, B. Abbott, Gregory R. Snow, D0 Collaboration
Gregory Snow Publications
We present a quasi-model-independent search for the physics responsible for electroweak symmetry breaking. We define final states to be studied, and construct a rule that identifies a set of relevant variables for any particular final state. A new algorithm (“SLEUTH”) searches for regions of excess in those variables and quantifies the significance of any detected excess. After demonstrating the sensitivity of the method, we apply it to the semi-inclusive channel ℯμX collected in 108 pb-1 of pp̅ collisions at √s = 1.8 TeV at the DØ experiment during 1992–1996 at the Fermilab Tevatron. We find no evidence of …
Search For R-Parity Violation In Multilepton Final States In Pp̅ Collisions At √S = 1.8 Tev, B. Abbott, Gregory R. Snow, D0 Collaboration
Search For R-Parity Violation In Multilepton Final States In Pp̅ Collisions At √S = 1.8 Tev, B. Abbott, Gregory R. Snow, D0 Collaboration
Gregory Snow Publications
The result of a search for gaugino pair production with a trilepton signature is reinterpreted in the framework of minimal supergravity (MSUGRA) with R-parity violation via leptonic λ Yukawa couplings. The search used 95 pb-1 of pp̅ collisions at √s =1.8 TeV recorded by the DO. detector at the Fermilab Tevatron. A large domain of the MSUGRA parameter space is excluded for λ121, λ122>10-4.
Search For Antiproton Decay At The Fermilab Antiproton Accumulator, S. Geer, J. Marriner, M. Martins, R. E. Ray, J. Streets, W. Wester
Search For Antiproton Decay At The Fermilab Antiproton Accumulator, S. Geer, J. Marriner, M. Martins, R. E. Ray, J. Streets, W. Wester
Gregory Snow Publications
A search for antiproton decay has been made at the Fermilab Antiproton Accumulator. Limits are placed on 13 antiproton decay modes. The results include the first explicit experimental limits on the muonic decay modes of the antiproton, and the first limits on the decay modes ℯ-γγ and ℯ-ω. The most stringent limit is for the decay modep̅→ ℯ-γ. At 90% C.L. we find that τ p̅¯ / B ( p̅→ ℯ-γ)>7x105 yr. The most stringent limit for decay modes with a muon in the final state …
Limits On Anomalous Ww Γ And Wwz Couplings From Ww/Wz→Eνjj Production, B. Abbott, Gregory Snow, D0 Collaboration
Limits On Anomalous Ww Γ And Wwz Couplings From Ww/Wz→Eνjj Production, B. Abbott, Gregory Snow, D0 Collaboration
Gregory Snow Publications
Limits on anomalous WW γ and WWZ couplings are presented from a study of WW/WZ→eνjj events produced in pp̅ collisions at √s = 1.8 TeV. Results from the analysis of data collected using the DØ detector during the 1993–1995 Tevatron collider run at Fermilab are combined with those of an earlier study from the 1992–1993 run. A fit to the transverse momentum spectrum of the W boson yields direct limits on anomalous WW γ and WWZ couplings. With the assumption that the WW γ and WWZ couplings are equal, we obtain -0.34 < λ < 0.36 (with Δk=0) and -0.43< Δk<0.59 (with λ =0) at the 95% confidence level for a form-factor scale Λ = 2.0 TeV.