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A Preliminary Improved Test of the Flavor Independence of Strong Interactions
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 and low bias against {ge} 3-jet final states. They find: {alpha}{sub s}{sup uds}/{alpha}{sub s}{sup all} = 0.997 {+-} 0.011(stat) {+-} 0.011(syst) {+-} 0.005(theory), {alpha}{sub s}{sup c}/{alpha}{sub s}{sup all} = 0.984 {+-} 0.042 {+-} 0.053 {+-} 0.022, {alpha}{sub s}{sup b}/{alpha}{sub s}{sup all} = 1.022 {+-} 0.019 {+-} 0.023 {+-} 0.012.
Date:
June 1, 1997
Creator:
Abe, K.; Abe, K.; Akagi, T. & Collaboration, SLD
Object Type:
Article
System:
The UNT Digital Library
Production of {pi}{sup {+-}}, K{sup {+-}}, K{sup 0}, K*{sup 0}, {phi}, p and {Lambda}{sup 0} in Hadronic Z{sup 0} Decays
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 was used to tag high-purity samples of light- and b-flavor events. The electron beam polarization was used to tag samples of quark and antiquark jets. Clear flavor dependences are observed, consistent with expectations based upon measured production and decay properties of heavy hadrons. They use the light-flavor results to test the predictions of MLLA QCD and of various fragmentation models. Differences between hadron and antihadron production in light quark jets are observed at high momentum fraction, providing direct evidence that higher-momentum particles are more likely to contain a primary quark or antiquark, and they use these results to make a new direct measurement of strangeness suppression in the jet fragmentation process.
Date:
June 1, 1997
Creator:
Abe, K.; Abe, K.; Akagi, T. & Collaboration, SLD
Object Type:
Article
System:
The UNT Digital Library
Reservoir Development Impacts on Surface-Water Quantity and Quality in the Yampa River Basin, Colorado and Wyoming
From introduction: This report describes the results of an investigation in which three computer models were used to evaluate different levels of the proposed reservoir development. One model simulated streamflow conditions with alternative multireservoir configurations; a second model simulated the dissolved-solids concentrations at various locations in the basin; and a third model used streamflows and dissolved solids concentrations to simulate the water-quality conditions within certain proposed reservoirs. This study was designed to demonstrate the application of computer-modeling techniques in evaluating impacts of proposed reservoirs.
Date:
1983
Creator:
Adams, D. Briane; Bauer, Daniel P.; Dale, Robert H. & Steele, Timothy Doak
Object Type:
Report
System:
The UNT Digital Library
Beryllium Deposits of the Mount Antero Region, Chaffee County, Colorado
Report discussing the possible existence of pegmatites containing beryllium deposits in the granite stock in the vicinity of Mount Antero and White Mountain, Chaffee County, Colorado.
Date:
May 1951
Creator:
Adams, John W.
Object Type:
Report
System:
The UNT Digital Library
Wall-rock control of certain pitchblende deposits in Golden Gate Canyon, Jefferson County, Colorado
Discussing wall-rock control of certain pitchblende deposits in Golden Gate Canyon, Jefferson County, Colorado
Date:
December 1954
Creator:
Adams, John W. & Stugard, Frederick
Object Type:
Report
System:
The UNT Digital Library
Wall-Rock Control of Certain Pitchblende Deposits in Golden Gate Canyon, Jefferson County, Colorado
Report discussing a geological study of the Union Pacific prospect near the Golden Canyon in Jefferson County, Colorado.
Date:
December 1954
Creator:
Adams, John W. & Stugard, Frederick, Jr.
Object Type:
Report
System:
The UNT Digital Library
Uranium Occurrences in the Golden Gate Canyon and Ralston Creek Areas, Jefferson County, Colorado
From abstract: Pitchblende, associated with base-metal sulfides, has been found at eight localities in the northern part of Jefferson County, Colo., in shear zones that cut pre-Cambrian metamorphic and igneous rocks, chiefly hornblende gneiss, biotite schist, and granite pegmatite. The pitchblende deposits, with one exception, are in major shear zones that contain vein-like bodies of carbonate-rich breccia. The breccia bodies range from 1 to 5 feet in thickness and are related probably to the Laramide faults, or "breccia reefs" of similar trend, mapped by Lovering and Goddard (1950).
Date:
January 1953
Creator:
Adams, John W.; Gude, Arthur J., III & Beroni, E. P.
Object Type:
Report
System:
The UNT Digital Library
Airborne Gamma-Ray and Magnetometer Survey, Cortez Quadrangle (Colorado, Utah): Final Report, Volume 1
First volume of a final report documenting the results of an airborne radiometric and magnetic survey in a portion of Colorado and Utah, including a description of the survey methods, calibration of the systems, data processing and displays, and interpretation methods.
Date:
July 1979
Creator:
Aero Service (Firm)
Object Type:
Report
System:
The UNT Digital Library
Airborne Gamma-Ray and Magnetometer Survey, Cortez Quadrangle (Colorado, Utah): Final Report, Volume 2
Second volume of a final report documenting the results of an airborne radiometric and magnetic survey, including data displays and interpretation results for the Cortez quadrangle.
Date:
July 1979
Creator:
Aero Service (Firm)
Object Type:
Report
System:
The UNT Digital Library
Airborne Gamma-Ray Spectrometer and Magnetometer Survey, Durango Quadrangle (Colorado): Final Report, Volume 1
Final report documenting a survey of the Durango quadrangle in Colorado as part of the Platoro Caldera detail survey. This volume outlines survey and analysis methods, and summarizes results.
Date:
August 1979
Creator:
Aero Service (Firm)
Object Type:
Report
System:
The UNT Digital Library
Airborne Gamma-Ray Spectrometer and Magnetometer Survey, Durango Quadrangle (Colorado): Final Report, Volume 1
This report documents a complete summary on the high sensitity airborne gamma-ray spectrometer and magnetometer survey over the Durango quadrangle.
Date:
August 1979
Creator:
Aero Service (Firm)
Object Type:
Report
System:
The UNT Digital Library
Airborne Gamma-Ray Spectrometer and Magnetometer Survey, Durango Quadrangle (Colorado): Final Report, Volume 2
The following report is a collection of maps documenting results from the airborne gamma-ray spectrometer and magnetometer survey in the Durango Quadrangle.
Date:
June 1979
Creator:
Aero Service (Firm)
Object Type:
Report
System:
The UNT Digital Library
[Cortez Quadrangle: Average Record Data Listings]
Average record data listings taken during aerial gamma-ray and magnetic surveys of the Cortez quadrangle in Colorado and Utah.
Date:
July 1979
Creator:
Aero Service (Firm)
Object Type:
Dataset
System:
The UNT Digital Library
[Cortez Quadrangle: Single Record Data Listings]
Single record data listings taken during aerial gamma-ray and magnetic surveys of the Cortez quadrangle in Colorado and Utah.
Date:
July 1979
Creator:
Aero Service (Firm)
Object Type:
Dataset
System:
The UNT Digital Library
[Durango Quadrangle: Average Record Data Listings]
Average record data listings taken during aerial gamma-ray and magnetic surveys of the Durango Quadrangle in Colorado.
Date:
August 1979
Creator:
Aero Service (Firm)
Object Type:
Dataset
System:
The UNT Digital Library
[Durango Quadrangle: Average Record Data Listings]
Average record data listings taken during aerial gamma-ray and magnetic surveys of the Durango quadrangle in Colorado.
Date:
August 1979
Creator:
Aero Service (Firm)
Object Type:
Dataset
System:
The UNT Digital Library
[Durango Quadrangle: Single Record Data Listings]
Single record data listings taken during aerial gamma-ray and magnetic surveys of the Durango Quadrangle in Colorado.
Date:
August 1979
Creator:
Aero Service (Firm)
Object Type:
Dataset
System:
The UNT Digital Library
[Durango Quadrangle: Single Record Data Listings]
Single record data listings taken during aerial gamma-ray and magnetic surveys of the Durango quadrangle in Colorado.
Date:
August 1979
Creator:
Aero Service (Firm)
Object Type:
Dataset
System:
The UNT Digital Library
Earthquake Resistance of Earth and Rock-Fill Dams, Report 2: Analysis of Response of Rifle Gap Dam to Project Rulison Underground Nuclear Detonation
Summary: The motion of Rifle Gap Dam was measured in September 1969 during the Project RULISON underground nuclear explosion. The observed response was then compared with the response computed in a mathematical model. Observed and computed responses were similar. From this study it appears that the mathematical models used are applicable to the design and analysis of soil structures, at least for ground motion intensities comparable to those observed at Rifle Gap Dam. (p. xi).
Date:
June 1972
Creator:
Ahlberg, James E.; Fowler, Jack & Heller, Lyman W.
Object Type:
Report
System:
The UNT Digital Library
Hydrologic Effects of Annually Diverting 131,000 Acre-Feet of Water from Dillon Reservoir, Central Colorado
From abstract: because of the increased demands for water in eastern Colorado, principally in the urbanizing Denver metropolitan area, increased diversions of water from Dillon Reservoir are planned. Estimates of end-of-month storage in Dillon Reservoir, assuming the reservoir was in place and 131,000 acre-feet of water were diverted from the reservoir each year, were reconstructed by mass balance for the 1931-77 water years. Based on the analysis, the annual maximum end-of-month drawdown below the elevation at full storage would have been 171 feet.
Date:
January 1979
Creator:
Alley, W. M.; Bauer, D. P.; Veenhuis, J. E. & Brennan, Robert
Object Type:
Report
System:
The UNT Digital Library
Carnotite Resources of San Miguel Bench, Montrose County, Colorado
Abstract: San Miguel bench includes about 4 square miles in the southern part of T. 48 N., R. 17 W., New Mexico principal meridian, Montrose County, Colorado. Production of carnotite ore from the area has been about 15, 000 short tons having an estimated average graderof 0. 31 percent U3O8,and 1. 6 percent V2 05 Nearly all of the carnotite deposits occur in a single-continuous sandstone bed near the top of the Salt Wash member of the Jurassic Morrison formation. These deposits consist chiefly of sandstone impregnated with uranium- and vanadium-bearing minerals. They are irregular tabular-shaped masses ranging in size from a few short tons to 30, 000 short tons or more of minable carnotite ore. During the period November 27, 1951, to April 17, 1953, the U. S. Geological Survey drilled 309 holes totaling 92, 194 feet on the San Miguel bench. Reserves total about 43, 000 short tons of material 1 foot or more thick and contain 0,.10 percent or more U30 or 1. 0 percent or more V205. Of these reserves 3, 300 short tons occur in private land. These reserves are in ten deposits found by Geological Survey drilling. Potential reserves (reserves based on geologic evidence …
Date:
September 1955
Creator:
Alvord, Donald C.
Object Type:
Report
System:
The UNT Digital Library
Carnotite Resources of San Miguel Bench, Montrose County, Colorado
Report discussing the San Miguel bench and the production of carnotite from deposits consisting of sandstone with uranium- and vanadium-bearing minerals.
Date:
September 1955
Creator:
Alvord, Donald C.
Object Type:
Report
System:
The UNT Digital Library
Preliminary report on exploration of the San Miguel bench, Montrose County, Colorado
A report discussing an exploration of the san Miguel Bench
Date:
June 2, 1953
Creator:
Alvord, Donald C.
Object Type:
Report
System:
The UNT Digital Library
Present and Potential Sediment Yields in the Yampa River Basin, Colorado and Wyoming
This report tracks and analyses the annual sediment yield for the Yampa River basin in Colorado and Wyoming. It includes maps, tables, and graphs.
Date:
December 1978
Creator:
Andrews, Edmund D.
Object Type:
Report
System:
The UNT Digital Library