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First measurement of sigma (p anti-p ---> Z) . Br (Z ---> tau tau) at s**(1/2) = 1.96- TeV
The authors present a measurement of the cross section for Z production times the branching fraction to {tau} leptons, {sigma} {center_dot} Br(Z {yields} {tau}{sup +}{tau}{sup -}), in p{bar p} collisions at {radical}s = 1.96 TeV in the channel in which one {tau} decays into {mu}{nu}{sub {mu}}{nu}{sub {tau}}, and the other into hadrons + {nu}{sub {tau}} or e{nu}{sub e}{nu}{sub {tau}}. The data sample corresponds to an integrated luminosity of 226 pb{sup -1} collected with the D0 detector at the Fermilab Tevatron collider. The final sample contains 2008 candidate events with an estimated background of 55%. From this they obtain {sigma} {center_dot} Br(Z {yields} {tau}{sup +}{tau}{sup -}) = 237 {+-} 15(stat) {+-} 18(sys) {+-} 15(lum) pb, in agreement with the standard model prediction.
Date:
December 1, 2004
Creator:
Abazov, V. M.; Abbott, B.; Abolins, M.; Acharya, B. S.; Adams, M.; Adams, T. et al.
Object Type:
Article
System:
The UNT Digital Library
A Search for anomalous heavy-flavor quark production in association with W bosons
None
Date:
November 1, 2004
Creator:
Abazov, V. M.; Abbott, B.; Abolins, M.; Acharya, B. S.; Adams, M.; Adams, T. et al.
Object Type:
Article
System:
The UNT Digital Library
Search for first-generation scalar leptoquarks in p anti-p collisions at s**(1/2) = 1.96-TeV
The authors report on a search for pair production of first-generation scalar leptoquarks (LQ) in p{bar p} collisions at {radical}s = 1.96 TeV using an integrated luminosity of 252 pb{sup -1} collected at the Fermilab Tevatron collider by the D0 detector. They observe no evidence for LQ production in the topologies arising from LQ{ovr LQ} {yields} eqeq and LQ{ovr LQ} {yields} eqvq, and derive 95% C.L. lower limits on the LQ mass as a function of {beta}, where {beta} is the branching fraction for LQ {yields} eq. The limits are 241 and 218 GeV/c{sup 2} for {beta} = 1 and 0.5, respectively. These results are combined with those obtained by D0 at {radical}s = 1.8 TeV, which increases these LQ mass limits to 256 and 234 GeV/c{sup 2}.
Date:
December 1, 2004
Creator:
Abazov, V. M.; Abbott, B.; Abolins, M.; Acharya, B. S.; Adams, M.; Adams, T. et al.
Object Type:
Article
System:
The UNT Digital Library
A Novel High-Heat Transfer Low-NO{sub x} Natural Gas Combustion System. Final Technical Report
A novel high-heat transfer low NO(sub x) natural gas combustion system. The objectives of this program are to research, develop, test, and commercialize a novel high-heat transfer low-NO{sub x} natural gas combustion system for oxygen-, oxygen-enriched air, and air-fired furnaces. This technology will improve the process efficiency (productivity and product quality) and the energy efficiency of high-temperature industrial furnaces by at least 20%. GTI's high-heat transfer burner has applications in high-temperature air, oxygen-enriched air, and oxygen furnaces used in the glass, metals, cement, and other industries. Development work in this program is focused on using this burner to improve the energy efficiency and productivity of glass melting furnaces that are major industrial energy consumers. The following specific project objectives are defined to provide a means of achieving the overall project objectives. (1) Identify topics to be covered, problems requiring attention, equipment to be used in the program, and test plans to be followed in Phase II and Phase III. (2) Use existing codes to develop models of gas combustion and soot nucleation and growth as well as a thermodynamic and parametric description of furnace heat transfer issues. (3) Conduct a parametric study to confirm the increase in process and energy …
Date:
January 1, 2004
Creator:
Abbasi, H.
Object Type:
Report
System:
The UNT Digital Library
Colloid-Facilitated Plutonium Transport in Saturated Alluvium
Natural groundwater colloids have been recognized as possible agents for enhancing the subsurface transport of strongly-sorbing radionuclides. To evaluate this mechanism, packed-bed column experiments were conducted comparing the simultaneous transport of dissolved plutonium (Pu), Pu sorbed onto natural colloids, 190-nm and 500-nm diameter fluorescent CML microspheres, and tritiated water in saturated alluvium. Experiments were conducted in two columns having slightly different porosities at two flow rates, resulting in average linear velocities (v{sub z}) of 0.6 to 3.65 cm/hr in one column and 0.57 to 2.85 cm/hr in the other. In all experiments, Pu associated with natural colloids transported through alluvium essentially unretarded, while dissolved Pu was entirely retained. These results were consistent with the strong sorption of Pu to alluvium and the negligible desorption from natural colloids, observed in separate batch experiments, over time scales exceeding those of the column experiments. Breakthroughs of natural colloids preceded tritiated water in all experiments, indicating a slightly smaller effective pore volume for the colloids. The enhancement of colloids transport over tritiated water decreased with v{sub z}, implying {approx} 40% enhancement at v{sub z} = 0. The 500-nm CML microspheres were significantly attenuated in the column experiments compared to the 190-nm microspheres, which exhibited …
Date:
June 1, 2004
Creator:
Abdel-Fattah, A.; Reimus, P.; Ware, S. & Haga, M.
Object Type:
Report
System:
The UNT Digital Library
LSST data pipeline prototyping plans and strategy
In this document we describe our approach and strategy for building the prototype for the image-stream analysis data pipeline. We start by describing the main research areas upon which we will be focusing; we then describe our plans on how to carry these research ideas to implement the data pipeline.
Date:
May 27, 2004
Creator:
Abdulla, G. M.; Brase, J.; Cook, K. & Miller, M.
Object Type:
Report
System:
The UNT Digital Library
Simulation of the Future LSST Data Pipelines
In this paper we describe our approach to build a pipeline simulator for the future Large-scale Synoptic Survey Telescope (LSST). The simulated pipeline will be used to research and evaluate software architectures that are efficient and flexible. It will also be used to define the real-time software and hardware requirements needed to support the anticipated LSST data rates. The LSST data pipeline requirements are still being defined, however, previous surveys can provide a good source for data requirements. Our approach is to use the SuperMacho data pipeline as a prototyping tool to identify a framework for building Modular Data-Centric Pipeline (MDCP) architectures. The prototyping is done in a hierarchical fashion to help capture and define the general data attributes (schema) first. We then model other necessary components based on science and performance requirements. We use identified schemas or data attributes as a way to define a data model for LSST.
Date:
July 26, 2004
Creator:
Abdulla, Ghaleb M.
Object Type:
Article
System:
The UNT Digital Library
Electric Reliability: Options for Electric Transmission Infrastructure Improvements
The electric utility industry is inherently capital intensive. At the same time, the industry must operate under a changing and sometimes unpredictable regulatory system at both the federal and state level. The Energy Policy Act of 2005 has set in place government activities intended to relieve congestion on the transmission system. Several factors have contributed to the lack of new transmission capacity; these are outlined within this report. This report also discusses earlier pieces of energy legislation.
Date:
December 23, 2004
Creator:
Abel, Amy
Object Type:
Report
System:
The UNT Digital Library
Electric Reliability: Options for Electric Transmission Infrastructure Improvements
The electric utility industry is inherently capital intensive. At the same time, the industry must operate under a changing and sometimes unpredictable regulatory system at both the federal and state level. The Energy Policy Act of 2005 has set in place government activities intended to relieve congestion on the transmission system. Several factors have contributed to the lack of new transmission capacity; these are outlined within this report. This report also discusses earlier pieces of energy legislation.
Date:
December 23, 2004
Creator:
Abel, Amy
Object Type:
Report
System:
The UNT Digital Library
Electricity: The Road Toward Restructuring
This report talks about Electricity regulation and transmission issues. It also includes the history of the California Electricity Crisis.
Date:
August 10, 2004
Creator:
Abel, Amy
Object Type:
Report
System:
The UNT Digital Library
Government Activities to Protect the Electric Grid
This report provides a description of initiatives within the Federal Energy Regulatory Commission and the Departments of Energy, Homeland Security, and Defense to protect the physical transmission infrastructure.
Date:
October 20, 2004
Creator:
Abel, Amy
Object Type:
Report
System:
The UNT Digital Library
Government Activities to Protect the Electric Grid
This report provides a description of initiatives within the Federal Energy Regulatory Commission and the Departments of Energy, Homeland Security, and Defense to protect the physical transmission infrastructure.
Date:
December 20, 2004
Creator:
Abel, Amy
Object Type:
Report
System:
The UNT Digital Library
Electricity: The Road Toward Restructuring
This report talks about Electricity regulation and transmission issues. It also includes the history of the California Electricity Crisis.
Date:
November 18, 2004
Creator:
Abel, Amy & Parker, Larry
Object Type:
Report
System:
The UNT Digital Library
Electricity: The Road Toward Restructuring
The Public Utility Holding Company Act of 1935 (PUHCA) and the Federal Power Act (FPA) were enacted to eliminate unfair practices and other abuses by electricity and gas holding companies by requiring federal control and regulation of interstate public utility holding companies. Comprehensive energy legislation has passed the House and Senate. The House passed H.R. 6 on April 11, 2003. On July 31, 2003, the Senate suspended debate on S. 14, inserted the text of H.R. 4 (107th Congress) as a substitute, and passed H.R. 6. A conference agreement was reached November 17, 2003, and passed by the House the next day. H.R. 6 includes an electricity title that would, in part, repeal PUHCA, would prospectively repeal the mandatory purchase requirement under PURPA, and would create an electric reliability organization. On June 15, 2004, H.R. 4503, a comprehensive energy policy bill, passed the House.
Date:
September 30, 2004
Creator:
Abel, Amy & Parker, Larry
Object Type:
Report
System:
The UNT Digital Library
Electric Utility Infrastructure Vulnerabilities: Transformers, Towers, and Terrorism
None
Date:
April 9, 2004
Creator:
Abel, Amy; Parfomak, Paul W. & Shea, Dana A.
Object Type:
Report
System:
The UNT Digital Library
Both Sides of the Border: A Scattering of Texas Folklore
Collection of Tex-Mex folklore and related essays, including papers presented at Texas Folklore Society meetings. The book is organized into four topical categories: I. Remembering Our Ancestors, II. Texas-Mexican Folklore, III. Miscellaneous Memorabilia, and IV. The Family Saga (Cont'd).
Date:
November 15, 2004
Creator:
Abernethy, Francis Edward & Untiedt, Kenneth L.
Object Type:
Book
System:
The UNT Digital Library
[Abilene City Council Minutes: 2004]
Ledger containing minutes of the City Council in Abilene, Texas documenting the group's discussions and activities from January 8, 2004 to December 16, 2004.
Date:
2004-01-08/2004-12-16
Creator:
Abilene (Tex.)
Object Type:
Book
System:
The Portal to Texas History
[Abilene City Ordinances: 2004]
Ledger containing ordinances/resolutions passed by the city of Abilene, Texas during calendar year 2004.
Date:
2004
Creator:
Abilene (Tex.)
Object Type:
Legal Document
System:
The Portal to Texas History
[Abilene City Resolutions: 2004]
Ledger containing resolutions passed by the city of Abilene, Texas during calendar year 2004.
Date:
2004
Creator:
Abilene (Tex.)
Object Type:
Legal Document
System:
The Portal to Texas History
[Program: Kiss Me, Kate, 2004]
Program for a production of Kiss Me, Kate at Abilene Christian University performed at the Abilene Civic Center Theatre from October 22nd to 24th, 2004. It includes a list of cast and staff, and other information about the play.
Date:
2004
Creator:
Abilene Christian College
Object Type:
Pamphlet
System:
The Portal to Texas History
Catalog of Abilene Christian University, 2004-2005
Undergraduate catalog describes the governance, history, academic programs, course descriptions, and campus life of Abilene Christian University in Abilene, Texas. Index begins on page 213.
Date:
2004
Creator:
Abilene Christian University
Object Type:
Book
System:
The Portal to Texas History
Prickly Pear, Yearbook of Abilene Christian University, 2004
Yearbook for Abilene Christian University in Abilene, Texas includes photos of and information about the school, student body, professors, and organizations. Index starts on page 206. This volume includes an interactive DVD.
Date:
2004
Creator:
Abilene Christian University
Object Type:
Yearbook
System:
The Portal to Texas History
The Shinnery Review, 2004
The Shinnery Review literary magazine of Abilene Christian University includes original short stories, essays, poetry, artwork, and other creative works.
Date:
2004
Creator:
Abilene Christian University
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
Abilene Philharmonic Playbill: January 24-March 6, 2004
Program for an Abilene Philharmonic concert that ran from January 24th to March 6th during the 54th season. It includes information about the pieces performed, artists and musicians, and advertising from local companies.
Date:
January 2004
Creator:
Abilene Philharmonic
Object Type:
Pamphlet
System:
The Portal to Texas History