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Physics at the Tevatron

Description: The theme of the XXXIV International Meeting on Fundamental Physics held in El Escorial, Spain on April 2-7, 2006 was ''From HERA and the TEVATRON to the LHC''. This is a summary of the four lectures I presented on ''Physics at the Tevatron''. Heavy quark production and the production of photons, bosons, and jets at the Tevatron are discussed. Also, a detailed study at the ''underlying event'' at CDF is presented together with a discussion of PYTHIA 6.2 tunes. A look back at the ''old days'' of Feynman-Field collider phenomenology is included.
Date: April 1, 2006
Creator: Field, Rick & U., /Florida
Partner: UNT Libraries Government Documents Department

Neutrino Physics

Description: The prediction and verification of the neutrino are reviewed, together with the V-A theory for its interactions (particularly the difficulties with the apparent existence of two neutrinos and the high-energy cross section). The Brookhaven experiment confirming the existence of two neutrinos and the cross section increase with momentum is then described, and future neutrino experiments are considered. (D.C.W.)
Date: January 1, 1963
Creator: Lederman, L. M.
Partner: UNT Libraries Government Documents Department

Neutrino physics

Description: The field of neutrino physics has expanded greatly in recent years with the discovery that neutrinos change flavor and therefore have mass. Although there are many neutrino physics results since the last DIS workshop, these proceedings concentrate on recent neutrino physics results that either add to or depend on the understanding of Deep Inelastic Scattering. They also describe the short and longer term future of neutrino DIS experiments.
Date: September 1, 2008
Creator: Harris, Deborah A.
Partner: UNT Libraries Government Documents Department

Collider physics

Description: This past year our group participated in both the D0 experiment at Fermilab and the SDC experiment at the SSC. Most of our effort was concentrated on the D0 project, where we contributed as much manpower as possible to the commissioning of the detector in preparation for the coming collider run. Our SDC work consisted of the investigation of one of the candidate technologies for the forward calorimeter. On the D0 experiment, our primary responsibilities have been in the areas of electronics commissioning and in the establishment of triggers for the coming collider run. We have also actively participated in the physics studies and have contributed to the upgrade effort as much as time has permitted. Our group has also participated in the cosmic ray run and in the D0 test beam. In view of our contributions, James White was selected as a member of the D0 Trigger board, and Jay Wightman is being trained as one of the global experts'' who are responsible for keeping the detector operational during the run. In addition, Amber Boehnlein has played a major role in the Level-2 trigger commissioning. A more detailed description of these activities is given in this paper.
Date: January 1, 1991
Partner: UNT Libraries Government Documents Department

Particle physics

Description: This report discusses: rare and forbidden decays of eta mesons and muons to test the standard model; tests of charge symmetry and isospin invariance; studies of baryon resonances; and exploratory investigations in support of the new programs under consideration. (LSP)
Date: October 1, 1991
Creator: Nefkens, B.M.K.
Partner: UNT Libraries Government Documents Department

Physics of supernovae

Description: Presupernova models of massive stars are presented and their explosion by ''delayed neutrino transport'' examined. A new form of long duration Type II supernova model is also explored based upon repeated encounter with the electron-positron pair instability in stars heavier than about 60 Msub solar. Carbon deflagration in white dwarfs is discussed as the probable explanation of Type I supernovae and special attention is paid to the physical processes whereby a nuclear flame propagates through degenerate carbon. 89 refs., 12 figs.
Date: December 13, 1985
Creator: Woosley, S.E. & Weaver, T.A.
Partner: UNT Libraries Government Documents Department

The Physics of SERAPHIM

Description: The Segmented Rail Phased Induction Motor (SERAPHIM) has been proposed as a propulsion method for urban maglev transit, advanced monorail, and other forms of high speed ground transportation. In this report we describe the technology, consider different designs, and examine its strengths and weaknesses.
Date: October 1, 2001
Partner: UNT Libraries Government Documents Department

Physics with CLAS

Description: The authors describe the physics program and the experimental equipment of the CEBAF Large Acceptance Spectrometer, CLAS. The spectrometer is located in Hall B, one of the three experimental areas at the Continuous Electron Beam Accelerator Facility (CEBAF) operated by the Thomas Jefferson National Accelerator Facility. They review the program to study baryon resonances to demonstrate the multi-particle detection capabilities of the CLAS detector.
Date: September 1, 1997
Creator: Collaboration, E. Smith for the CLAS
Partner: UNT Libraries Government Documents Department

Physics and Government

Description: In defining the powers and duties of the three branches of government, the U.S. Constitution never explicitly referred to Science, except in the patent clause. But many technical responsibilities are implied in references to weights and measures, the census, and the like. Thomas Jefferson, John Adams, and in particular Benjamin Franklin, were highly literate in science, but it was their disciple, President John Quincy Adams who promoted as a matter of policy a direct role of the government in science--in particular with respect to astronomy, land surveys and navigation--all physical sciences. Some agencies of government--notably the National Bureau of Standards and the Department of Agriculture were founded in the early days of the Republic with scientific and technical missions. Since then the involvement of the government with science has waxed and waned but the major expansion of the interaction between physics and government occurred after World War II when physicists demonstrated the power of their craft during mobilization of science in support of the war effort. In discussing the interaction of physics with government we should distinguish ''science in government''--scientific input into policy making--from ''government in science,'' which is the support and management of that part of the overall scientific endeavor for which the government has responsibility. Let me turn first to the subject of physics in government. An overwhelming fraction of governmental decisions today have scientific and technical components; decisions ignoring these components are wasteful at best and can imperil the nation. For this reason governmental bodies at all levels solicit scientific advice--or at least give lip service to the need for such advice. When such advice was deliberately avoided, as President Reagan did before announcing his Strategic Defense Initiative in March 1983, the technically unattainable goal ''to make nuclear weapons impotent and obsolete'' was proclaimed.
Date: August 24, 1999
Creator: Hendry, Nancy H.
Partner: UNT Libraries Government Documents Department

Tevatron physics

Description: These lectures form a personal, and not necessarily comprehensive, survey of physics at the Fermilab Tevatron proton-antiproton collider. They cover detectors, analysis issues, and physics prospects for the current Tevatron run.
Date: January 3, 2003
Creator: Womersley, John
Partner: UNT Libraries Government Documents Department

Biological physics

Description: Major goals of biological physics are the understanding of biological systems in physical terms and the study of concepts and laws of complex systems.
Date: September 24, 1998
Partner: UNT Libraries Government Documents Department

Supercollider physics

Description: The physics that can be explored with multi-TeV supercolliders is reviewed, including parton distributions, hadron jet production, the standard electroweak theory and minimal extensions to it, technicolor, supersymmetry, and compositeness. 19 refs., 11 figs. (LEW)
Date: March 1, 1985
Creator: Quigg, C.
Partner: UNT Libraries Government Documents Department

B physics

Description: We review B physics and the motivation for studying B decays, including CP-violating effects in the B meson system. 33 refs., 20 figs.
Date: December 1, 1987
Creator: Gilman, F.J.
Partner: UNT Libraries Government Documents Department

Supercollider physics

Description: Several unsolved problems concerning backgrounds prevent one from claiming that some particular signal is clearly observable. One of the most critical issues concerns the observability of W's and Z's from their decays into hadronic jets. Many signals for new physics involve final states with W's or Z's (e.g. the minimal Higgs discussed in D). If one is restricted to observing the W's and Z's via their leptonic modes (which may not be possible for final states involving more than one W) only a small number of events will be detected - 5000 Z pairs decaying into ee and ..mu mu.. results in only 18 detected events. The physics background to hadronic decays of W and Z is from QCD events with multiple jets. In the case of final states with 4 jets we have no reliable QCD estimate. Many particle searches (e.g. supersymmetric ones) involve signals which have missing transverse momentum, so the importance of hermetic detectors with 4 ..pi.. coverage cannot be overstated. The difference between a pp and a proton-antiproton collider is limited to a few special cases where the presence of valence antiquarks in the anti-proton is important (for example is the production of a new W). In order to exploit this advantage a certain minimum luminosity is required. (approx. 5 x 10/sup 31/ cm/sup -2/ sec/sup -1/ for ..sqrt..s = 40 TeV). A 40 TeV machine operating at a luminosity of at least 10/sup 32/ cm/sup -2/ sec/sup -1/, seems capable of answering the fundamental questions surrounding the breaking of weak interactions. The same assurance cannot be given for a 10 TeV Machine at the same luminosity. 23 references, 23 figures.
Date: April 1, 1984
Creator: Hinchliffe, I.
Partner: UNT Libraries Government Documents Department

Antinucleon physics

Description: Some of the recent data from LEAR, Brookhaven, and KEK on low and medium energy interactions of antinucleons (anti N) with nucleons (N) are reviewed and interpreted. Emphasis is on elastic and charge exchange scattering, total cross sections, and studies of anti NN annihilation, with particular focus on the emerging evidence for broad resonances and/or bound states of the anti NN system and the selection rules which reveal the quuark-gluon dynamics of the annihilation process. 69 refs., 8 figs.
Date: January 1, 1986
Creator: Dover, C.B.
Partner: UNT Libraries Government Documents Department

(Particle physics)

Description: This report briefly discusses the following topics: rare and forbidden eta meson and muon decays to test the standard model; tests of charge symmetry and isospin invariance; studies of baryon resonances; and exploratory investigations in support of the previous programs. (LSP)
Date: July 1, 1990
Partner: UNT Libraries Government Documents Department

The physics of jets

Description: Recent data on the fragmentation of quarks and gluons is discussed in the context of phenomenological models of parton fragmentation. Emphasis is placed on the experimental evidence for parton showers as compared to a fixed order QCD treatment, on new data on inclusive hadron production and on detailed studies of baryon production in jets.
Date: September 1, 1987
Creator: Hofmann, W.
Partner: UNT Libraries Government Documents Department