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Recent charm mixing results from BABAR, Belle, and CDF

Description: A summary of the results of several recent studies of charm mixing is presented. A number of different methods were used, including the measurement of lifetime ratios for final states of different CP, time dependence of wrong-sign hadronic decays, fits to time-dependent Dalitz plots, and searches for wrong-sign semi-leptonic decays. Taken together, they suggest mixing is of order 1%. The status of searches for indirect CP violation is also reported.
Date: February 2, 2009
Creator: Charles, M.J. & /SLAC, /Iowa U.
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Partner: UNT Libraries Government Documents Department
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Time Reversal Violation

Description: This talk briefly reviews three types of time-asymmetry in physics, which I classify as universal, macroscopic and microscopic. Most of the talk is focused on the latter, namely the violation of T-reversal invariance in particle physics theories. In sum tests of microscopic T-invariance, or observations of its violation, are limited by the fact that, while we can measure many processes, only in very few cases can we construct a matched pair of process and inverse process and observe it with suf… more
Date: January 27, 2009
Creator: Quinn, H.
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Partner: UNT Libraries Government Documents Department
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Radiation Doses to Hanford Workers from Natural Potassium-40

Description: The chemical element potassium is an essential mineral in people and is subject to homeostatic regulation. Natural potassium comprises three isotopes, 39K, 40K, and 41K. Potassium-40 is radioactive, with a half life of 1.248 billion years. In most transitions, it emits a β particle with a maximum energy of 0.560 MeV, and sometimes a gamma photon of 1.461 MeV. Because it is ubiquitous, 40K produces radiation dose to all human beings. This report contains the results of new measurements of 40K i… more
Date: February 13, 2009
Creator: Strom, Daniel J.; Lynch, Timothy P. & Weier, Dennis R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Technical Risk Rating of DOE Environmental Projects - 9153

Description: The U.S. Department of Energy's Office of Environmental Management (DOE-EM) was established to achieve the safe and compliant disposition of legacy wastes and facilities from defense nuclear applications. The scope of work is diverse, with projects ranging from single acquisitions to collections of projects and operations that span several decades and costs from hundreds of millions to billions US$. The need to be able to manage and understand the technical risks from the project to senior mana… more
Date: February 11, 2009
Creator: Cercy, Michael; Fayfich, Ronald & Schneider, Steven
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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A Mathematical Analysis of Atomistic-to-Continuum (AtC) Multiscale Approaches

Description: We development a general framework for information-passing and concurrent discrete to continuum scale bridging and applied it to biological, electro-mechanical and thermo-electrical systems. Funds were used for partial support of two post-doctoral research associates (Aiqin Li, Dawei Zhang) and three graduate students (Renge Li, Mohan Nuggehally, Joseph Riendeau).
Date: February 24, 2009
Creator: Fish, Jacob & Shephard, Mark
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Determination of Basic Structure-Property Relations for Processing and Modeling in Advanced Nuclear Fuel: Microstructure Evolution and Mechanical Properties

Description: The project objective is to study structure-property relations in solid solutions of nitrides and oxides with surrogate elements to simulate the behavior of fuels of inert matrix fuels of interest to the Advanced Fuel Cycle Initiative (AFCI), with emphasis in zirconium-based materials. Work with actual fuels will be carried out in parallel in collaboration with Los Alamos National Laboratory (LANL). Three key aspects will be explored: microstructure characterization through measurement of globa… more
Date: March 1, 2009
Creator: Wheeler, Kirk; Parra, Manuel & Peralta, Pedro
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Measurement of the t anti-t production cross section and top quark mass extraction using dilepton events in p anti-p collisions

Description: We present a measurement of the top quark pair production cross section in p{bar p} collisions at {radical}s = 1.96 TeV using approximately 1 fb{sup -1} of data collected with the D0 detector. We consider decay channels containing two high p{sub T} charged leptons where one lepton is identified as an electron or a muon while the other lepton can be an electron, a muon or a hadronically decaying {tau} lepton. For a mass of the top quark of 170 GeV, the measured cross section is 7.5{sub -1.0}{sup… more
Date: January 1, 2009
Creator: Abazov, V. M.; Abbott, B.; Abolins, M.; Acharya, B. S.; Adams, M.; Adams, T. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Strategies for the Commercialization and Deployment of Greenhouse Gas Intensity-Reducing Technologies and Practices

Description: New technologies will be a critical component--perhaps the critical component--of our efforts to tackle the related challenges of energy security, climate change, and air pollution, all the while maintaining a strong economy. But just developing new technologies is not enough. Our ability to accelerate the market penetration of clean energy, enabling, and other climate-related technologies will have a determining impact on our ability to slow, stop, and reverse the growth in greenhouse gas (GHG… more
Date: January 2009
Creator: Committee on Climate Change Science and Technology Integration
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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High Resolution Simulation of Beam Dynamics in Electron Linacs for Free Electron Lasers

Description: In this paper we report on large scale multi-physics simulation of beam dynamics in electron linacs for next generation free electron lasers (FELs). We describe key features of a parallel macroparticle simulation code including three-dimensional (3D) space-charge effects, short-range structure wake fields, longitudinal coherent synchrotron radiation (CSR) wake fields, and treatment of radiofrequency (RF) accelerating cavities using maps obtained from axial field profiles. A macroparticle up-sam… more
Date: January 5, 2009
Creator: Ryne, R.D.; Venturini, M.; Zholents, A.A. & Qiang, J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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CHANGING THE SAFETY CULTURE IN HANFORD TANK FARMS

Description: In 2000 the Hanford Tank Farms had one of the worst safety records in the Department of Energy Complex. By the end of FY08 the safety performance of the workforce had turned completely around, resulting in one of the best safety records in the DOE complex for operations of its kind. This paper describes the variety of programs and changes that were put in place to accomplish such a dramatic turn-around. The U.S. Department of Energy's 586-square-mile Hanford Site in Washington State was establi… more
Date: January 6, 2009
Creator: MV, BERRIOCHOA & LJ, ALCALA
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Theoretical Studies of Nucleation Kinetics and Nanodroplet Microstructure

Description: The goals of this project were to (1) explore ways of bridging the gap between fundamental molecular nucleation theories and phenomenological approaches based on thermodynamic reasoning, (2) test and improve binary nucleation theory, and (3) provide the theoretical underpinning for a powerful new experimental technique, small angle neutron scattering (SANS) from nanodroplet aerosols, that can probe the compositional structure of nanodroplets. This report summarizes the accomplishments of this p… more
Date: January 31, 2009
Creator: Wilemski, Gerald
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Advanced Water-Gas Shift Membrane Reactor

Description: The overall objectives for this project were: (1) to identify a suitable PdCu tri-metallic alloy membrane with high stability and commercially relevant hydrogen permeation in the presence of trace amounts of carbon monoxide and sulfur; and (2) to identify and synthesize a water gas shift catalyst with a high operating life that is sulfur and chlorine tolerant at low concentrations of these impurities. This work successfully achieved the first project objective to identify a suitable PdCu tri-me… more
Date: January 7, 2009
Creator: Emerson, Sean; Vanderspurt, Thomas; Opalka, Susanne; Radhakrishnan, Rakesh & Willigan, Rhonda
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Note on Graphite Oxidation by Oxygen and Moisture

Description: Simplified equations of graphite oxidation are reviewed for semi-infinite slab, finite slab, and cylinder geometries, using the principal assumptions of linearized oxidation kinetics and quasi-steady state oxidation profile. All equations are coupled to a general surface mass transfer boundary condition. The equations include those for oxidant concentration distribution, surface oxidation rate, burnoff profile, and oxidation efficiency. This review also covers some areas that may not be well re… more
Date: February 1, 2009
Creator: Wichner, Robert; Burchell, Timothy D & Contescu, Cristian I
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Measurement of the Semileptonic Decays B->D tau nu and B->D* tau nu

Description: The authors present measurements of the semileptonic decays B{sup -} {yields} D{sup 0} {tau}{sup -} {bar {nu}}{sub {tau}}, B{sup -} {yields} D*{sup 0} {tau}{sup -}{bar {nu}}{sub {tau}}, {bar B}{sup 0} {yields} D{sup +} {tau}{sup -} {bar {nu}}{sub {tau}}, and {bar B}{sup 0} {yields} D*{sup +} {tau}{sup -}{bar {nu}}{sub {tau}}, which are sensitive to non-Standard Model amplitudes in certain scenarios. The data sample consists of 232 x 10{sup 6} {Upsilon}(4S) {yields} B{bar B} decays collected wit… more
Date: February 23, 2009
Creator: Aubert, B.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Limits on the Superconducting Order Parameter in NdFeAsO_{1-x}F_y from Scanning SQUID Microscopy

Description: Identifying the symmetry of the superconducting order parameter in the recently-discovered ferrooxypnictide family of superconductors, RFeAsO{sub 1-x}F{sub y}, where R is a rare earth, is a high priority. Many of the proposed order parameters have internal {pi} phase shifts, like the d-wave order found in the cuprates, which would result in direction-dependent phase shifts in tunneling. In dense polycrystalline samples, these phase shifts in turn would result in spontaneous orbital currents and… more
Date: January 8, 2009
Creator: Hicks, Clifford W.; Lippman, Thomas M.; Huber, Martin E.; Ren, Zhi-An; Yang, Jie; Zhao, Zhong-Xian et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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FINAL REPORT DOE Grant: DE-FG02-89ER45391

Description: The work reported here took place at the University of Minnesota from 07/01/1989 to 06/30/2006. Most of this work focused on computational materials applied to oxides during the first part of this funding period and to nanoscale materials toward the end of the funding period. This funding resulted in three monographs, 36 invited articles or book chapters, 160 articles in refereed journals and 89 invited talks. The funding helped train 13 PhD students and one masters student. The PI received two… more
Date: February 27, 2009
Creator: Chelikowsky, James R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Evaluation of the 2008 Lexus LS 600H Hybrid Synergy Drive System

Description: Subsystems of the 2008 Lexus 600h hybrid electric vehicle (HEV) were studied and tested as part of an intensive benchmarking effort carried out to produce detailed information concerning the current state of nondomestic alternative vehicle technologies. Feedback provided by benchmarking efforts is particularly useful to partners of the Vehicle Technologies collaborative research program as it is essential in establishing reasonable yet challenging programmatic goals which facilitate development… more
Date: January 15, 2009
Creator: Burress, T. A.; Coomer, C. L.; Campbell, S. L.; Wereszczak, A. A.; Cunningham, J. P.; Marlino, L. D. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Technical Approach for the Development of DOE Building America Builders Challenge Technology Information Packages (Revised)

Description: The U.S. Department of Energy has issued a challenge to the homebuilding industry to build 220,000 high-performance homes by 2012. To qualify, homes must meet the requirements of a performance path, prescriptive path, or participating in a partner program.
Date: August 1, 2009
Creator: Roberts, D. R. & Anderson, R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Consumptive water use in the production of ethanonl and petroleum gasoline.

Description: The production of energy feedstocks and fuels requires substantial water input. Not only do biofuel feedstocks like corn, switchgrass, and agricultural residues need water for growth and conversion to ethanol, but petroleum feedstocks like crude oil and oil sands also require large volumes of water for drilling, extraction, and conversion into petroleum products. Moreover, in many cases, crude oil production is increasingly water dependent. Competing uses strain available water resources and ra… more
Date: January 30, 2009
Creator: Wu, M.; Mintz, M.; Wang, M.; Arora, S. & Systems, Energy
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Light-Front Holography and QCD Hadronization at the Amplitude Level

Description: Light-front holography allows hadronic amplitudes in the AdS/QCD fifth dimension to be mapped to frame-independent light-front wavefunctions of hadrons in physical space-time, thus providing a relativistic description of hadrons at the amplitude level. The AdS coordinate z is identified with an invariant light-front coordinate {zeta} which separates the dynamics of quark and gluon binding from the kinematics of constituent spin and internal orbital angular momentum. The result is a single-varia… more
Date: January 9, 2009
Creator: Brodsky, Stanley J. & de Teramond, Guy F.
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Partner: UNT Libraries Government Documents Department
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Energy Systems Integration Facility (ESIF) External Stakeholders Workshop

Description: On October 9, 2008, NREL hosted a workshop to provide an opportunity for external stakeholders to offer insights and recommendations on the design and functionality of DOE's planned Energy Systems Infrastructure Facility (ESIF). The goal was to ensure that the planning for the ESIF effectively addresses the most critical barriers to large-scale energy efficiency (EE) and renewable energy (RE) deployment. This technical report documents the ESIF workshop proceedings.
Date: January 1, 2009
Creator: Komomua, C.; Kroposki, B.; Mooney, D.; Stoffel, T.; Parsons, B.; Hammond, S. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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