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Measurement of the B+ and B0 Lifetimes With Topological Vertexing at SLD

Description: The lifetimes of the B{sup +} (B{sub u}) and B{sup 0} (B{sub d}) mesons have been measured using a sample of 150,000 hadronic Z{sup 0} decays collected by the SLD experiment at the SLC between 1993 and 1995. The analysis reconstructs the decay length and charge of the B meson using a novel topological technique. This method results in a high statistics sample of 6,033 (3,665) charged (neutral) vertices. The ratio of B{sup +}:B{sup 0} decays in the charged (neutral) sample is 1.8:1 (1:2.3).
Date: July 1, 1996
Creator: Abe, K.; Abe, K. & Abt, I.
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Partner: UNT Libraries Government Documents Department
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Measurement of the Z{sup 0}-Lepton Coupling Asymmetries A{sub l}

Description: The authors present direct measurements of the Z{sup 0}-lepton coupling asymmetries, A{sub e}, A{sub {mu}}, and A{sub {tau}}. It is based on a data sample selected from 170 k Z{sup 0} decays collected by the SLD detector. The Z`s are produced by collisions of polarized e{sup {minus}} with unpolarized e{sup +} bunches at SLC. The couplings are extracted from the measurement of the left-right forward-backward asymmetry for each lepton species. The preliminary results (using information from all l… more
Date: July 22, 1996
Creator: Abe, K.; Abe, K. & Abt, I.
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Partner: UNT Libraries Government Documents Department
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A Preliminary Improved Test of the Flavor Independence of Strong Interactions

Description: The authors present an improved comparison of the strong couplings of gluons to light (u, d, and s), c, and b quarks, determined from multijet rates in flavor-tagged samples of hadronic Z{sup 0} decays recorded with the SLC Large Detector at the SLAC Linear Collider between 1993 and 1995. Flavor separation on the basis of lifetime and decay multiplicity differences among hadrons containing light, c, and b quarks was made using the SLD precision tracking system, yielding tags with high purity an… more
Date: June 1, 1997
Creator: Abe, K.; Abe, K.; Akagi, T. & Collaboration, SLD
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Preliminary Measurement of Prompt D+- and D*+- Meson Production and D*+- Spin Alignment in Hadronic Z0 Decays

Description: The authors have measured the production rates as a function of scaled energy x of prompt charmed pseudoscalar D{sup {+-}} and vector D*{sup {+-}} mesons in hadronic Z{sup 0} decays. The prompt signal components were isolated from the background of D mesons from B hadron decays using impact parameters of reconstructed D{sup {+-}} {yields} K{sup {minus_plus}}{pi}{sup {+-}}{pi}{sup {+-}} and D*-daughter D{sup 0} {yields} K{sup {minus}}{pi}{sup +} and D{sup 0} {yields} K{sup {minus}}{pi}{sup +}{pi… more
Date: June 1, 1997
Creator: Abe, K.; Abe, K.; Akagi, T. & Collaboration, SLD
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Production of {pi}{sup {+-}}, K{sup {+-}}, K{sup 0}, K*{sup 0}, {phi}, p and {Lambda}{sup 0} in Hadronic Z{sup 0} Decays

Description: The authors have measured production rates as a function of momentum of the identified hadrons {pi}{sup +}, K{sup +}, K{sup 0}, K*{sup 0}, {phi}, p, {Lambda}{sup 0} and their antihadrons in inclusive hadronic Z{sup 0} decays, as well as separately in decays into light, c and b flavors. In addition they have compared hadron and antihadron production rates in light quark (rather than antiquark) jets. The SLD Cherenkov Ring Imaging Detector was used to identify charged hadrons. The vertex detector… more
Date: June 1, 1997
Creator: Abe, K.; Abe, K.; Akagi, T. & Collaboration, SLD
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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TEMPERATURE DEPENDENCE OF TAFEL SLOPE IN THE FORMATION OF VERY THIN ANODIC OXIDE FILMS ON NIOBIUM

Description: A kinetic study was made of the formation of very thin anodic oxide films on niobium at constant current over the temperature range --10 to 70 deg C. Formation voltages were limited to the range below the oxygen evolution potential to eliminate possible interaction of an electronic component of the current with the measured formation field. It was found that the measured temperature dependence of Tafel slope agreed with that predicted by the theory of Mott and Cabrera. Using this theory, a zero… more
Date: January 1, 1957
Creator: Adams, G.B. Jr. & Kao, T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Search for Horizontal Bosons at the SSC

Description: The production process anti p p ..-->.. l/sup -/l'/sup +/ + X, where the leptons belong to two different generations and X refers to spectator jets, provides a clear signature for horizontal (generation-changing) bosons when the leptons are emitted nearly back-to-back and p/sub T//sup miss/ = 0. Cross sections and p/sub T/ distributions for each lepton are presented, and discovery limits on M/sub H/ are extracted for several different channels.
Date: January 1, 1984
Creator: Albright, C. H.; Deshpande, N. G.; Gunion, J. F. & Haber, H. E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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The production of {pi}{sup {+-}}, K{sup {+-}}, p, k{sup 0} and {Lambda}{sup 0} in hadronic Z{sup 0} decays

Description: The authors have measured production fractions and spectra for {pi}{sup {+-}}, K{sup {+-}} and p, and production spectra for K{sup 0} and {Lambda}{sup 0} in both hadronic Z{sup 0} decays and a Z{sup 0} {yields} light quark (uds) subset at SLD. The SLD Cherenkov Ring Imaging Detector was used to identify charged hadrons. The CCD vertex detector was used to select the enriched uds sample. For the global sample, the results are consistent with previous experiments. The authors observe a clear flav… more
Date: August 1, 1995
Creator: Baird, K.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Genetic Analysis of Chloroplast Translation

Description: The assembly of the photosynthetic apparatus requires the concerted action of hundreds of genes distributed between the two physically separate genomes in the nucleus and chloroplast. Nuclear genes coordinate this process by controlling the expression of chloroplast genes in response to developmental and environmental cues. However, few regulatory factors have been identified. We used mutant phenotypes to identify nuclear genes in maize that modulate chloroplast translation, a key control point… more
Date: August 15, 2005
Creator: Barkan, Alice
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Energy efficient industrialized housing research program

Description: This is the second volume of a two volume report on energy efficient industrialized housing. Volume II contains support documentation for Volume I. The following items are included: individual trip reports; software bibliography; industry contacts in the US, Denmark, and Japan; Cost comparison of industrialized housing in the US and Denmark; draft of the final report on the systems analysis for Fleetwood Mobile Home Manufacturers. (SM)
Date: January 1, 1989
Creator: Berg, R.; Brown, G.Z.; Finrow, J.; Kellett, R.; Mc Donald, M.; McGinn, B. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Energy efficient industrialized housing research program

Description: This document describes the research work completed in five areas in fiscal year 1989. (1) The analysis of the US industrialized housing industry includes statistics, definitions, a case study, and a code analysis. (2) The assessment of foreign technology reviews the current status of design, manufacturing, marketing, and installation of industrialized housing primarily in Sweden and Japan. (3) Assessment of industrialization applications reviews housing production by climate zone, has a cost a… more
Date: December 1, 1989
Creator: Berg, R.; Brown, G.Z.; Finrow, J.; Kellett, R.; McDonald, M.; McGinn, B. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Energy efficient industrialized housing research program

Description: This report summarizes three documents: Multiyear Research Plan, Volume I FY 1989 Task Reports, and Volume II Appendices. These documents describe tasks that were undertaken from November 1988 to December 1989, the first year of the project. Those tasks were: (1) the formation of a steering committee, (2) the development of a multiyear research plan, (3) analysis of the US industrialized housing industry, (4) assessment of foreign technology, (5) assessment of industrial applications, (6) analy… more
Date: February 1, 1990
Creator: Berg, R.; Brown, G.Z.; Finrow, J.; Kellett, R.; McDonald, M.; McGinn, B. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Bottom Quark Production At The SSC (Superconducting Super Collider)

Description: We present predictions for the rapidity and transverse momentum distributions for inclusive production of bottom quarks at SSC energies, pp ..-->.. bX. Our computations are based on the simplest, lowest-order QCD mechanisms. To estimate uncertainties, we use three different choices for structure functions, G(x,Q), as well as different choices for the evolution scale Q.
Date: December 8, 1986
Creator: Berger, Edmond L.; Collins, John C. & Soper, Davison E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Diffractive Hard Scattering And The SSC

Description: Events in high energy hadron collisions are discussed that contain a hard scattering, in the sense that very heavy quarks or high P/sub T/ jets are produced, yet are diffractive, in the sense that one of the incident hadrons is scattered with only a small energy loss. 12 refs., 6 figs.
Date: January 1, 1986
Creator: Berger, Edmond L.; Collins, John C.; Soper, Davison E. & Sterman, George
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Hard Diffractive Processes: QCD models

Description: We discuss high energy hadron collisions that contain a hard scattering, in the sense that a W, a Z, very heavy quarks, or high P/sub T/ jets are produced, yet are diffractive, in the sense that one of the incident hadrons is scattered with only a small energy loss. In our approach, the cross section for such diffractive hard scattering is a part of the normal hard scattering inclusive cross section, as calculated using perturbative quantum chromodynamics. We use Regge phenomenology in combinat… more
Date: July 1, 1986
Creator: Berger, Edmond L.; Collins, John C.; Soper, Davison E. & Sterman, George
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Hard Scattering And A Diffractive Trigger

Description: Conclusions concerning the properties of hard scattering in diffractively produced systems are summarized. One motivation for studying diffractive hard scattering is to investigate the interface between Regge theory and perturbative QCD. Another is to see whether diffractive triggering can result in an improvement in the signal-to-background ratio of measurements of production of very heavy quarks. 5 refs. (LEW)
Date: February 1, 1986
Creator: Berger, Edmond L.; Collins, John C.; Soper, Davison E. & Sterman, George
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Interpretation of Borehole Tides and Other Elastomechanical Oscillatory Phenomena in Geothermal Systems

Description: Ultralow to low-frequency oscillatory phenomena of elastomechanical nature have been observed in a number of geothermal areas. These include pressure and water level oscillations in the tidal frequency range 10{sup -6} to 10{sup -4} Hz (White, 1968), flow oscillations at around 10{sup -3} Hz (Bodvarsson and Bjornsson, 1976) and ground noise in the range 10{sup -1} to 10 Hz (Douze and Sorrel, 1972). The presence of such oscillations conveys certain information on the underlying geothermal system… more
Date: December 14, 1977
Creator: Bodvarsson, Gunnar
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Research supported by the department of energy Task C: Experimental high energy physics. 1995 Final report

Description: This report describes work of the University of Oregon high-energy physics group related to the Stanford Linear Detector, LEP`s OPAL detector, the NuTeV experiment at Fermilab, the SSC`s GEM detector, and top-quark studies at the Next Linear Collider. 160 refs., 53 figs., 12 tabs.
Date: July 1, 1996
Creator: Brau, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Recent developments in silicon calorimetry

Description: We present a survey of some of the recent calorimeter applications of silicon detectors. The numerous attractive features of silicon detectors are summarized, with an emphasis on those aspects important to calorimetry. Several of the uses of this technology are summarized and referenced. We consider applications for electromagnetic calorimetry, hadronic calorimetry, and proposals for the SSC.
Date: November 1, 1990
Creator: Brau, J. E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Theory of elementary particles and accelerator theory: Task C: Experimental high energy physics. Annual progress report

Description: The experimental high energy physics group at the University of Oregon broadened its effort during the past year. The SLD effort extends from maintaining and operating the SLD luminosity monitor which was built at Oregon, to significant responsibility in physics analysis, such as event selection and background analysis for the left-right asymmetry measurement. The OPAL work focussed on the luminosity monitor upgrade to a silicon-tungsten calorimeter. Building on the work done at Oregon for SLD,… more
Date: December 31, 1992
Creator: Brau, J. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Recent developments in silicon calorimetry

Description: We present a survey of some of the recent calorimeter applications of silicon detectors. The numerous attractive features of silicon detectors are summarized, with an emphasis on those aspects important to calorimetry. Several of the uses of this technology are summarized and referenced. We consider applications for electromagnetic calorimetry, hadronic calorimetry, and proposals for the SSC.
Date: November 1, 1990
Creator: Brau, James E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Theory of elementary particles and accelerator theory: Task C: Experimental high energy physics. [Univ. of Oregon]

Description: The experimental high energy physics group at the University of Oregon broadened its effort during the past year. The SLD effort extends from maintaining and operating the SLD luminosity monitor which was built at Oregon, to significant responsibility in physics analysis, such as event selection and background analysis for the left-right asymmetry measurement. The OPAL work focussed on the luminosity monitor upgrade to a silicon-tungsten calorimeter. Building on the work done at Oregon for SLD,… more
Date: January 1, 1992
Creator: Brau, James E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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