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CP VIOLATION HIGHLIGHTS: CIRCA 2005
Recent highlights in CP violation phenomena, are reviewed. B-factory results imply that, CP-violation phase in the CKM matrix is the dominant contributor to the observed CP violation in K and B-physics. Deviations from the predictions of the CKM-paradigm due to beyond the Standard Model CP-odd phase are likely to be a small perturbation. Therefore, large data sample of clean B's will be needed. Precise determination of the unitarity triangle, along with time dependent CP in penguin dominated hadronic and radiative modes are discussed. Null tests in B, K and top-physics and separate determination of the K-unitarity triangle are also emphasized.
Date:
February 27, 2005
Creator:
A., SONI
Object Type:
Article
System:
The UNT Digital Library
RESEARCH PLAN FOR SPIN PHYSICS AT RHIC.
In this report we present the research plan for the RHIC spin program. The report covers (1) the science of the RHIC spin program in a world-wide context; (2) the collider performance requirements for the RHIC spin program; (3) the detector upgrades required, including timelines; (4) time evolution of the spin program.
Date:
February 1, 2005
Creator:
AIDALA, C.; BUNCE, G. & AL., ET
Object Type:
Report
System:
The UNT Digital Library
ELECTRON BEAM ION SOURCE PREINJECTOR PROJECT (EBIS) CONCEPTUAL DESIGN REPORT.
This report describes a new heavy ion pre-injector for the Relativistic Heavy Ion Collider (RHIC) based on a high charge state Electron Beam Ion Source (EBIS), a Radio Frequency Quadrupole (RFQ) accelerator, and a short Linac. The highly successful development of an EBIS at BNL now makes it possible to replace the present pre-injector that is based on an electrostatic Tandem with a reliable, low maintenance Linac-based pre-injector. Linac-based pre-injectors are presently used at most accelerator and collider facilities with the exception of RHIC, where the required gold beam intensities could only be met with a Tandem until the recent EBIS development. EBIS produces high charge state ions directly, eliminating the need for the two stripping foils presently used with the Tandem. Unstable stripping efficiencies of these foils are a significant source of luminosity degradation in RHIC. The high reliability and flexibility of the new Linac-based pre-injector will lead to increased integrated luminosity at RHIC and is an essential component for the long-term success of the RHIC facility. This new pre-injector, based on an EBIS, also has the potential for significant future intensity increases and can produce heavy ion beams of all species including uranium beams and, as part of …
Date:
February 28, 2005
Creator:
ALESSI, J.; BARTON, D.; BEEBE, E.; GASSNER, D. & AL., ET
Object Type:
Report
System:
The UNT Digital Library
An Order-of-Magnitude Estimation of Benzene Concentration in Saltstone Vault
The contents of Tank 48 that include the tetraphenylborate (TPB) precipitates of potassium and cesium will be grouted and stored in the Saltstone vault. The grouting process is exothermic, which should accelerate the decomposition of TPB precipitates eventually to benzene. Because the vault is not currently outfitted with an active ventilation system, there is a concern that a mixture of flammable gases may form in the vapor space of each cell filled with the curing grout. The purpose of this study was to determine if passive breathing induced by the diurnal oscillations of atmospheric pressure would provide any mitigating measure against potential flammability. Specifically, it was requested that a set of algorithms be developed that would predict the equilibrium concentration of benzene as a function of benzene generation rate, fill height, and the amplitude of the barometric pressure oscillations. These algorithms were to be derived based on several simplifying assumptions so that order of magnitude estimates could be made quickly for scoping purposes. This memo documents the resulting algorithms along with those key assumptions made. These algorithms were then applied to simulate several test cases, including the baseline case where the cell was filled to the maximum height of 25 …
Date:
February 28, 2005
Creator:
ALEXANDER, CHOI
Object Type:
Report
System:
The UNT Digital Library
Measurement of inclusive differential cross sections for Upsilon(1S) production in p anti-p collisions at s**(1/2) = 1.96-TeV
The authors present measurements of the inclusive production cross sections of the {Upsilon}(1S) bottomonium state in p{bar p} collisions at {radical}s = 1.96 TeV. Using the {Upsilon}(1S) {yields} {mu}{sup +}{mu}{sup -} decay mode for a data sample of 159 {+-} 10 pb{sup -1} collected by the D0 detector at the Fermilab Tevatron collider, they determine the differential cross sections as a function of the {Upsilon}(1S) transverse momentum for three ranges of the {Upsilon}(1S) rapidity: 0 < |y{sup {Upsilon}}| {le} 0.6, 0.6 < |y{sup {Upsilon}}| {le} 1.2, and 1.2 < |y{sup {Upsilon}}| {le} 1.8.
Date:
February 1, 2005
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
Study of Z gamma events and limits on anomalous Z Z gamma and Z gamma gamma couplings in p anti-p collisions at s**(1/2) = 1.96-TeV
The authors present a measurement of the Z{gamma} production cross section and limits on anomalous ZZ{gamma} and Z{gamma}{gamma} couplings for form-factor scales of {Lambda} = 750 and 1000 GeV. The measurement is based on 138 (152) candidate events in the ee{gamma} ({mu}{mu}{gamma}) final state using 320 (290) pb{sup -1} of p{bar p} collisions at {radical}s = 1.96 TeV. The 95% C.L. limits on real and imaginary parts of individual anomalous couplings are |h{sub 10,30}{sup Z}| < 0.23, |h{sub 20,40}{sup Z}| < 0.020, |h{sub 10,30}{gamma}| < 0.23, and |h{sub 20,40}{gamma}| < 0.019 for {Lambda} = 1000 GeV.
Date:
February 1, 2005
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
Government Activities to Protect the Electric Grid
None
Date:
February 4, 2005
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 electrical utility infrastructure from outages caused by a range of activities including system operator errors, weather-related damage, and terrorist attacks. While the electric utility industry has primary responsibility, federal and state government agencies also have been addressing physical security concerns.
Date:
February 4, 2005
Creator:
Abel, Amy
Object Type:
Report
System:
The UNT Digital Library
Electric Utility Restructuring: Maintaining Bulk Power System Reliability
None
Date:
February 1, 2005
Creator:
Abel, Amy; Parker, Larry B. & Stitt, Steven C.
Object Type:
Report
System:
The UNT Digital Library
Improved Performance in CuInSe2 and Surface-Modified CuGaSe2 Solar Cells
In this paper, we present an update and review on the progress made in the development of low-bandgap CuInSe2 (CIS) and wide-bandgap CuGaSe2 (CGS) solar cells. Our research project is a primarily concerned with the optimization of the bottom and top cells of the tandem solar cell. This past year, we established new record total-area efficiencies of 15.0% and 10.2% for CIS and surface-modified CGS solar cells, respectively. These achievements were possible by modifying the growth process for CIS and CGS absorbers. We attempt to modify the surface region of the CGS absorber to be CIGS-like in composition. We also have designed a mechanical-stacked tandem solar cell where the 15% CIS cell serves as the bottom cell. The NREL-confirmed total-area efficiency for this tandem device is 15.31%.
Date:
February 1, 2005
Creator:
AbuShama, J.; Noufi, R.; Johnston, S.; Ward, S. & Wu, X.
Object Type:
Article
System:
The UNT Digital Library
Genomics-based selection and functional characterization of triterpene glycosyltransferases from the model legume Medicago truncatula
Article on genomics-based selection and functional characterization of triterpene glycosyltransferases from the model legume Medicago truncatula.
Date:
February 2, 2005
Creator:
Achnine, Lahoucine; Huhman, David; Farag, Mohamed A.; Sumner, Lloyd W.; Blount, Jack W. & Dixon, R. A.
Object Type:
Article
System:
The UNT Digital Library
Electroweak physics: measurement of the forward-backward charge asymmetry of electron-positron pairs in p anti-p collisions at s**(1/2) = 1.96 tev
We report a measurement of the forward-backward charge asymmetry of electrons from W boson decays in p{bar p} collisions at {radical}s = 1.96 TeV using a data sample of 170 pb{sup -1} collected by the Collider Detector at Fermilab. The asymmetry is measured as a function of electron rapidity and transverse energy and provides new input on the momentum fraction dependence of the u and d quark parton distribution functions within the proton.
Date:
February 23, 2005
Creator:
Acosta, D.
Object Type:
Report
System:
The UNT Digital Library
Electroweak physics: measurement of w gamma and z gamma production in pp-bar collisions at s**(1/2) = 1.96 tev
The Standard Model predictions for W{gamma} and Z{gamma} production are tested using an integrated luminosity of 200 pb{sup -1} of p{bar p} collision data collected at the Collider Detector at Fermilab. The cross sections are measured by selecting leptonic decays of the W and Z bosons, and photons with transverse energy E{sub T} > 7 GeV that are well separated from leptons. The production cross sections and kinematic distributions for the W{gamma} and Z{gamma} data are compared to SM predictions.
Date:
February 2, 2005
Creator:
Acosta, D.
Object Type:
Report
System:
The UNT Digital Library
Exotic physics: search for excited and exotic electrons in the e gamma decay channel in p anti-p collisions at s**(1/2) = 1.96 tev
We present a search for excited and exotic electrons (e*) decaying to an electron and a photon, both with high transverse momentum. We use 202 pb{sup -1} of data collected in p{bar p} collisions at {radical}s = 1.96 TeV with the CDF II detector. No signal above standard model expectation is seen for associated ee* production. We discuss the e* sensitivity in the parameter space of the excited electron mass M{sub e*} and the compositeness energy scale {Lambda}. In the contact interaction model, we exclude 132 GeV/c{sup 2} < M{sub e*} < 879 GeV/c{sup 2} for {Lambda} = M{sub e*} at 95% confidence level (C.L.). In the gauge-mediated model, we exclude 126 GeV/c{sup 2} < M{sub e*} < 430 GeV/c{sup 2} at 95% C.L. for the phenomenological coupling f/{Lambda} {approx} 10{sup -2} GeV{sup -1}.
Date:
February 21, 2005
Creator:
Acosta, D.
Object Type:
Report
System:
The UNT Digital Library
Measurement of the moments of the hadronic invariant mass distribution in semileptonic B decays
None
Date:
February 1, 2005
Creator:
Acosta, D.; Adelman, J.; Affolder, Anthony A.; Akimoto, T.; Albrow, M. G.; Ambrose, D. et al.
Object Type:
Article
System:
The UNT Digital Library
Oral History Interview with Charlie Adams, February 17, 2005
The National Museum of the Pacific War presents an oral interview with Charlie Adams. Adams enlisted in the Marine Corps in March, 1943 and after training was assigned to the Fifth Marine Division. He landed late on the first day of the invasion of Iwo Jima. He remained there for 36 days. He served as a radio operator and describes much of the combat conditions he encountered on the island as well as some of the Japanese tactics. He was one of 13 of his original company of 248 men to walk off Iwo Jima unhurt. Adams also describes some of his experiences in Nagasaki, Japan during the occupation. He returned to the US and was discharged in March, 1946.
Date:
February 17, 2005
Creator:
Adams, Charlie
Object Type:
Sound
System:
The Portal to Texas History
Oral History Interview with Charlie Adams, February 17, 2005
The National Museum of the Pacific War presents an oral interview with Charlie Adams. Adams enlisted in the Marine Corps in March, 1943 and after training was assigned to the Fifth Marine Division. He landed late on the first day of the invasion of Iwo Jima. He remained there for 36 days. He served as a radio operator and describes much of the combat conditions he encountered on the island as well as some of the Japanese tactics. He was one of 13 of his original company of 248 men to walk off Iwo Jima unhurt. Adams also describes some of his experiences in Nagasaki, Japan during the occupation. He returned to the US and was discharged in March, 1946.
Date:
February 17, 2005
Creator:
Adams, Charlie
Object Type:
Text
System:
The Portal to Texas History
Oral History Interview with John Adams, February 18, 2005
The National Museum of the Pacific War presents an interview with John Adams. Adams enlisted in the Marines Corps Officer’s Procurement Program in March 1942. He went into a V-12 detachment in July 1943, and was sent to Notre Dame University. From there he went to Quantico, then into OCS, then to New River, North Carolina where he was in the 67th Replacement Battalion. This battalion served as guards on a train transporting prisoners from Portsmouth Naval Prison to California, then on a ship to Pearl Harbor. Adams was placed in a 60mm mortar platoon. His first action was Iwo Jima. He landed in the fifth wave. He worked with the mortars, carried out many wounded men, and carried ammo. Adams describes the terrain on Iwo Jima. He talks at length about his 27 days on Iwo. After Iwo he went to Maui and upon being discharged, Adams became a self-employed farmer, married and raised 11 children.
Date:
February 18, 2005
Creator:
Adams, John
Object Type:
Sound
System:
The Portal to Texas History
Oral History Interview with John Adams, February 18, 2005
The National Museum of the Pacific War presents an interview with John Adams. Adams enlisted in the Marines Corps Officer’s Procurement Program in March 1942. He went into a V-12 detachment in July 1943, and was sent to Notre Dame University. From there he went to Quantico, then into OCS, then to New River, North Carolina where he was in the 67th Replacement Battalion. This battalion served as guards on a train transporting prisoners from Portsmouth Naval Prison to California, then on a ship to Pearl Harbor. Adams was placed in a 60mm mortar platoon. His first action was Iwo Jima. He landed in the fifth wave. He worked with the mortars, carried out many wounded men, and carried ammo. Adams describes the terrain on Iwo Jima. He talks at length about his 27 days on Iwo. After Iwo he went to Maui and upon being discharged, Adams became a self-employed farmer, married and raised 11 children.
Date:
February 18, 2005
Creator:
Adams, John
Object Type:
Text
System:
The Portal to Texas History
Performance and Reliability of a 1-kW Amorphous Silicon Photovoltaic Roofing System
The National Renewable Energy Laboratory (NREL) has been monitoring the performance of a 1- kWAC United Solar Systems Corporation (USSC) roofing system over the 6-year period from October 1998 to September 2004. This paper will investigate the performance and reliability of this system. The annual degradation and seasonal fluctuation of the system's power output are calculated using the PVUSA power rating regression model. The system performance is also examined using the additional performance parameters of yield, reference yield, and performance ratio, which allows for a somewhat less complicated data collection and analysis. The data indicate that the system has exhibited stable performance over time, with an overall degradation rate comparable to that found in crystalline silicon systems.
Date:
February 1, 2005
Creator:
Adelstein, J. & Sekulic, B.
Object Type:
Article
System:
The UNT Digital Library
European Trade Retaliation: The FSC-ETI Case
None
Date:
February 11, 2005
Creator:
Aheam, Raymond J.
Object Type:
Report
System:
The UNT Digital Library
U.S.-European Union Trade Relations: Issues and Policy Challenges
None
Date:
February 10, 2005
Creator:
Ahearn, Raymond J.
Object Type:
Report
System:
The UNT Digital Library
Oral History Interview with Chester Ahr, February 18, 2005
The National Museum of the Pacific War presents an oral interview with Chester Ahr. Ahr joined the Marine Corps in December, 1941. He trained in San Diego and shipped overseas in October, 1942 to Guadalcanal where he was attached to a base services unit, which assisted the Seabees and Army engineers in construction projects. He also was in the invasion of Guam, where he was wounded and evacuated. Once he returned to his unit, Ahr got very sick and missed the invasion of Iwo Jima. Shortly afterwards, he was discharged.
Date:
February 18, 2005
Creator:
Ahr, Chester
Object Type:
Sound
System:
The Portal to Texas History
Oral History Interview with Chester Ahr, February 18, 2005
The National Museum of the Pacific War presents an oral interview with Chester Ahr. Ahr joined the Marine Corps in December, 1941. He trained in San Diego and shipped overseas in October, 1942 to Guadalcanal where he was attached to a base services unit, which assisted the Seabees and Army engineers in construction projects. He also was in the invasion of Guam, where he was wounded and evacuated. Once he returned to his unit, Ahr got very sick and missed the invasion of Iwo Jima. Shortly afterwards, he was discharged.
Date:
February 18, 2005
Creator:
Ahr, Chester
Object Type:
Text
System:
The Portal to Texas History