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A Next-to-Leading-Order QCD Analysis of Neutrino-Iron Structure Functions at the Tevatron

Description: Nucleon structure functions measured in neutrino-iron and antineutrino-iron charged-current interactions are presented. The data were taken in two high-energy high-statistics runs by the LAB-E detector at the Fermilab Tevatron. Structure functions are extracted from a sample of 950,000 neutrino and 170,000 antineutrino events with neutrino energies from 30 to 360 GeV. The structure functions F{sub 2} and xF{sub 3} are compared with the predictions of perturbative Quantum Chromodynamics (PQCD). … more
Date: June 1, 1997
Creator: Seligman, W. G.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries Government Documents Department
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Selected problems in experimental intermediate energy physics. Final technical report, February 1, 1991--January 31, 1994

Description: A complete description of the research program of the intermediate energy group at the University of Houston may be found in previous progress reports, renewal proposals, and proposals to various accelerator advisory committees. The summaries of activities are presented in the next section. The objectives of the research program are to: (1) investigate selected, forefront problems in experimental intermediate energy physics; (2) educate students in this field of research; and (3) develop the in… more
Date: October 1, 1997
Creator: Mayes, B.W.; Hungerford, E.V. & Pinsky, L.S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Antiquark distributions in the proton

Description: This is the final report of a three-year Laboratory Directed Research and Development (LDRD) project at the Los Alamos National Laboratory (LANL). The study of quark and antiquark distributions in the nucleon has been a major endeavor in nuclear and particle physics. Results from a recent deep-inelastic scattering experiment suggest the surprising possibility that the up and down antiquark distributions in the proton are not symmetric. A sensitive and direct determination of the antiquark distr… more
Date: July 1, 1997
Creator: Brooks, M.; Carey, T. & Garvey, G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Isolated prompt photon plus jet photoproduction at HERA

Description: The cross section for photoproduction of a prompt photon in association with a jet is studied in Next-to-Leading Order at the DESY ep collider HERA. The effect of various cuts imposed on the cross section by the ZEUS collaboration including isolation cuts on the photon is examined. Comparisons with the ZEUS preliminary data using various parametrizations of the photon structure function is made, and good agreement is found. The preliminary data is not yet precise enough to make a distinction be… more
Date: June 10, 1997
Creator: Gordon, L.E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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From HERA to the Tevatron: A scaling law in hard diffraction

Description: Results on hard diffraction from CDF are reviewed and compared with predictions based on the diffractive structure function of the proton measured in deep inelastic scattering at HERA. The predictions are generally larger than the measured rates by a factor of {approximately} 6, suggesting a breakdown of conventional factorization. Correct predictions are obtained by scaling the rapidity gap probability distribution of the diffractive structure function to the total integrated gap probability. … more
Date: December 4, 1997
Creator: Goulianos, K. & CDF
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Precision measurement of the neutron spin dependent structure functions

Description: In experiment E154 at the Stanford Linear Accelerator Center the spin dependent structure function g{sub 1}{sup n} (x, Q{sup 2}) of the neutron was measured by scattering longitudinally polarized 48.3 GeV electrons off a longitudinally polarized {sup 3}He target. The high beam energy allowed the author to extend the kinematic coverage compared to the previous SLAC experiments to 0.014 {le} x {le} 0.7 with an average Q{sup 2} of 5 GeV{sup 2}. The author reports the integral of the spin dependent… more
Date: February 1, 1997
Creator: Kolomensky, Y.G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Superfluidity, Bose condensation and neutron scattering in liquid {sup 4}He

Description: The relation between superfluidity and Bose condensation in {sup 4}He provides lessons that may be valuable in understanding the strongly correlated electron system of high {Tc} superconductivity. Direct observation of a Bose condensate in the superfluid by deep inelastic neutron scattering measurements has been attempted over many years. But the impulse approximation, which relates momentum distributions to neutron scattering structure functions, is broadened by final state effects. Neverthele… more
Date: April 1, 1997
Creator: Silver, R.N.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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QCD: Challenges for the future

Description: Despite many experimental verifications of the correctness of our basic understanding of QCD, there remain numerous open questions in strong interaction physics and we focus on the role of future colliders in addressing these questions. We discuss possible advances in the measurement of {alpha}{sub s}, in the study of parton distribution functions, and in the understanding of low x physics at present colliders and potential new facilities. We also touch briefly on the role of spin physics in ad… more
Date: January 13, 1997
Creator: Burrows, P.; Dawson, S.; Orr, L. & Smith, W.H.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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QCD in hadron-hadron collisions

Description: Quantum Chromodynamics provides a good description of many aspects of high energy hadron-hadron collisions, and this will be described, along with some aspects that are not yet understood in QCD. Topics include high E{sub T} jet production, direct photon, W, Z and heavy flavor production, rapidity gaps and hard diffraction.
Date: March 1, 1997
Creator: Albrow, M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Perturbative QCD as a probe of hadron structure: Volume 2. Proceedings of RIKEN BNL Research Center workshop

Description: The workshop brought together about thirty invited participants from around the world, and an almost equal number of Brookhaven users and staff, to discuss recent developments and future prospects for hadronic strong interaction studies at high energy, particularly relating to the RHIC project at Brookhaven. RIKEN and Brookhaven have long traditions in and commitments to the study of the strong interactions, and the advent of the RHIC collider will open new opportunities both for relativistic h… more
Date: October 1, 1997
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Overview of results from the Fermilab fixed target and collider experiments

Description: In this paper we present a review of recent QCD related results from Fermilab fixed target and collider experiments. Topics covered range from structure functions through W/Z production, heavy quark production and jet angular distributions. We also include the current state of knowledge about leptoquark pair production in hadronic collisions.
Date: June 1, 1997
Creator: Montgomery, H.E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Photons and diphotons from the Tevatron

Description: Photon measurements from the CDF and D0 collaboration are described. The subjects touched on are loosely organized around the fact that they all have some bearing on the structure functions and pQCD. The methodology of collider measurements is briefly reviewed, and the results for single photons, photons plus jets, photons plus charm and diphotons are discussed. Finally there is a very brief indication of what is expected from the Tevatron based experiments in the future.
Date: August 1, 1997
Creator: Blair, R. & Collaborations, CDF and D0
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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A local dynamic correlation function from inelastic neutron scattering

Description: Information about local and dynamic atomic correlations can be obtained from inelastic neutron scattering measurements by Fourier transform of the Q-dependent intensity oscillations at a particular frequency. A local dynamic structure function, S(r,{omega}), is defined from the dynamic scattering function, S(Q,{omega}), such that the elastic and frequency-integrated limits correspond to the average and instantaneous pair-distribution functions, respectively. As an example, S(r,{omega}) is calcu… more
Date: July 13, 1997
Creator: McQueeney, R.J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Effective neutron targets

Description: Because of the lack of a free neutron target, deuterium targets have been used extensively in studying the neutron structure. The unique spin structure of the {sup 3}He ground state wave function and the recent developments in laser technologies made polarized {sup 3}He targets widely used in many experiments from neutron electromagnetic form factor studies to nucleon spin structure function measurements at all major electron accelerator facilities. In this talk, the current status of the polar… more
Date: July 1, 1997
Creator: Gao, H.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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High Energy Physics

Description: This proposal is for the continuation of the High Energy Physics Program at the University of California, Riverside. In 1990, we will concentrate on analysis of LEP data from the OPAL detector. We expect to record 10{sup 5} Z`s by the end of 1989 and 10{sup 6} in 1990. This data will be used to measure the number of quark-lepton families in the universe. In the second half of 1990 we will also be occupied with the installation of the D-Zero detector in the Tevatron Collider and the preparation … more
Date: July 1, 1997
Creator: Kernan, A.; Shen, B. C. & Ma, Ernst
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Particle structure function and subbarrier fusion in hot nuclei

Description: The study of particle evaporation spectra can provide information about shape polarization phenomena induced by the nascent particle on the residual nucleus, and about optical modulations felt by the particle as it is preformed inside the nucleus. These aspects can be studied as a function temperature. Preliminary experimental evidence about these features has been obtained.
Date: February 1, 1997
Creator: Moretto, L. G.; Jing, K. X.; Phair, L. & Wozniak, G. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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