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Run II jet physics: Proceedings of the Run II QCD and weak boson physics workshop

Description: The Run II jet physics group includes the Jet Algorithms, Jet Shape/Energy Flow, and Jet Measurements/Correlations subgroups. The main goal of the jet algorithm subgroup was to explore and define standard Run II jet finding procedures for CDF and D0. The focus of the jet shape/energy flow group was the study of jets as objects and the energy flows around these objects. The jet measurements/correlations subgroup discussed measurements at different beam energies; {alpha}{sub S} measurements; and … more
Date: May 11, 2000
Creator: al., Gerald C. Blazey et
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Partner: UNT Libraries Government Documents Department
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Top quark physics

Description: The top quark, when it was finally discovered at Fermilab in 1995 completed the three-generation structure of the Standard Model (SM) and opened up the new field of top quark physics. Viewed as just another SM quark, the top quark appears to be a rather uninteresting species. Produced predominantly, in hadron-hadron collisions, through strong interactions, it decays rapidly without forming hadrons, and almost exclusively through the single mode t {r_arrow} Wb. The relevant CKM coupling V{sub tb… more
Date: March 24, 2000
Creator: Ahmadov, A.; Azuelos, G.; Bauer, U.; Belyaev, A.; Berger, E. L.; Sullivan, Z. et al.
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Partner: UNT Libraries Government Documents Department
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B physics at CDF

Description: From 1992 to 1995 the CDF experiment has taken 110 pb{sup {minus}1} of p{anti p} collisions at a center-of-mass energy of 1.8 TeV. These data gave rise to a variety of important B physics measurements. Most importantly B mass, lifetime and mixing measurements, the observation of the last missing meson, the B{sub c}, and a measurement of the CP violation parameter sin 2{beta}. The highlights of those results are described and a perspective for the upcoming Run II period is given.
Date: October 10, 2000
Creator: Paus, Christoph
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Partner: UNT Libraries Government Documents Department
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Diffractive physics at the Tevatron

Description: Experimental results of hard single diffraction and double pomeron exchange studies at the Fermilab Tevatron p{bar p} collider are presented. Single diffraction results are compared with predictions from phenomenological models and expectations from results obtained in diffractive deep inelastic scattering experiments at the DESY ep collider HERA. Double pomeron exchange results are compared with corresponding single diffraction results to test factorization.
Date: September 12, 2000
Creator: Hatakeyama, K.
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Partner: UNT Libraries Government Documents Department
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HEPAP White Paper on planning for U.S. high-energy physics [High Energy Physics Advisory Panel]

Description: High-energy physicists seek to understand what the universe is made of, how it works, and where it has come from. They investigate the most basic particles and the forces between them. Experiments and theoretical insights over the past several decades have made it possible to see the deep connection between apparently unrelated phenomena, and to piece together more of the story of how a rich and complex cosmos could evolve from just a few kinds of elementary particles. The 1998 Subpanel of the … more
Date: October 1, 2000
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Solid state physics of transuranics

Description: The experimental validation of first principals calculations of plutonium and its alloys is an important part of LLNL's science-based stockpile stewardship mission. This project has addressed this issue in the following ways. We have measured the electronic structure of U, Pu, and their alloys using valence band photoemission (PES), Soft X-Ray fluorescence (SXF), and X-Ray Absorption Spectroscopy (XAS). In the long term, this will allow a direct comparison between calculated and measured densit… more
Date: August 22, 2000
Creator: Terminello, L J; Allen, P G; Shuh, D K & Terry, J
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Physics beyond the standard model

Description: The author briefly summarizes the prospects for extending the understanding of physics beyond the standard model within the next five years. He interprets ``beyond the standard model'' to mean the physics of electroweak symmetry breaking, including the standard model Higgs boson. The nature of this TeV-scale new physics is perhaps the most crucial question facing high-energy physics, but one should recall (neutrino oscillations) that there is ample evidence for interesting physics in the flavou… more
Date: January 24, 2000
Creator: Womersley, J.
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Partner: UNT Libraries Government Documents Department
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Perspectives in high-energy physics

Description: The author sketches some pressing questions in several active areas of particle physics and outline the challenges they present for the design and operation of detectors. His assignment at the 1999 ICFA Instrumentation School is to survey some current developments in particle physics, and to describe the kinds of experiments they would like to do in the near future and illustrate the demands their desires place on detectors and data analysis. Like any active science, particle physics is in a st… more
Date: February 9, 2000
Creator: Quigg, C.
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Partner: UNT Libraries Government Documents Department
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Chiral Symmetries in Nuclear Physics

Description: The theoretical concepts of a chirally symmetric meson field theory are reviewed and an overview of the most relevant applications in nuclear physics is given. This includes a unified description of the vacuum properties of hadrons, finite nuclei and hot, dense and strange nuclear matter in an extended chiral SU(3){sub L}/SU(3){sub R} {sigma}-{omega} model.
Date: June 12, 2000
Creator: Zschiesche, D.; Papazoglou, P.; Schramm, S.; Beckmann, C.; Schaffner-Bielich, J.; Stocker, H. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Status of MARS electromagnetic physics

Description: New modules for simulating electromagnetic showers at energies from 1 keV to a multi-TeV region have been developed and implemented into the MARS code. The entire shower and several non-standard processes essential at high energies are treated either exclusively or inclusively, according to the user's choice. Results of calculations are in a good agreement with data.
Date: August 28, 2000
Creator: Oleg E. Krivosheev, Nikolai V. Mokhov
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Partner: UNT Libraries Government Documents Department
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Physics division annual report 1999

Description: This report summarizes the research performed in the past year in the Argonne Physics Division. The Division's programs include operation of ATLAS as a national heavy-ion user facility, nuclear structure and reaction research with beams of heavy ions, accelerator research and development especially in superconducting radio frequency technology, nuclear theory and medium energy nuclear physics. The Division took significant strides forward in its science and its initiatives for the future in the… more
Date: December 6, 2000
Creator: Thayer, K., ed. & Physics
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Physics of the nucleon sea quark distributions

Description: Sea quark distributions in the nucleon have naively been expected to be generated perturbatively by gluon splitting. In this case, there is no reason for the light quark and anti-quark sea distributions to be different. No asymmetries in the strange or heavy quark sea distributions are predicted in the improved parton model. However,recent experiments have called these naive expectations into question. A violation of the Gottfried sum rule has been measured in several experiments, suggesting th… more
Date: March 10, 2000
Creator: Vogt, R.
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Partner: UNT Libraries Government Documents Department
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The role of supersymmetry phenomenology in particle physics

Description: Supersymmetry phenomenology is an important component of particle physics today. I provide a definition of supersymmetry phenomenology, outline the scope of its activity, and argue its legitimacy. This essay derives from a presentation given at the 2000 SLAC Summer Institute.
Date: December 14, 2000
Creator: Wells, James D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Recent B-physics results at CDF

Description: Between 1992 and 1996 CDF collected about 100 pb{sup {minus}1} of data at a {radical}s = 1.8 TeV at the Fermilab Tevatron collider. This data sample led to a large number of precision measurements of B hadrons properties including their masses, lifetimes and neutral B meson oscillation parameters and the discovery of the B{sub c} meson. Here the author reports on three recent results: the measurement of the B{sup +} production cross section, the search for radiative penguin B hadron decays and … more
Date: July 27, 2000
Creator: Bortoletto, Daniela
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Partner: UNT Libraries Government Documents Department
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Introduction to Lie operators for accelerator physics

Description: The Lie operators approach is a powerful method to solve complicated problems in different fields of physics. The author and his colleagues applied and improved this approach for calculations of spin motion in beamlines, accelerators, and colliders. The code SpinLie allows one to calculate the level of equilibrium polarization for electron and proton colliders and allows one to investigate the spin resonances during acceleration, colliding, and so on.
Date: January 12, 2000
Creator: Eidelman, Y.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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CDF: Run II Physics Projections

Description: In March 2001, the Fermilab Tevatron will start a new physics run of p{bar p} collisions at {radical}s = 2.0 TeV. The CDF experiments will collect a data sample of 2 fb{sup {minus}1} in the first two years. In this paper the authors describe the B physics prospects at CDF during the upcoming run.
Date: December 20, 2000
Creator: Tanaka, Maashi
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Partner: UNT Libraries Government Documents Department
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Pressure as a probe of the physics of relaxor ferroelectrics

Description: Pressure studies have provided new insights into the physics of compositionally-disordered ABO{sub 3} oxide relaxors. Specifically, results will be presented and discussed on a pressure-induced ferroelectric-to-relaxer crossover phenomenon, the continuous evolution of the energetic and dynamics of the relaxation process, and the interplay between pressure and electric field in determining the dielectric response.
Date: January 25, 2000
Creator: SAMARA,GEORGE A.
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Partner: UNT Libraries Government Documents Department
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