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Studies of the Strange Hadronic Tau Decay Tau- to K0(S) Pi- Nu-Tau Using the BaBar Detector (open access)

Studies of the Strange Hadronic Tau Decay Tau- to K0(S) Pi- Nu-Tau Using the BaBar Detector

A study of the decay {tau}{sup -} {yields} K{sub S}{sup 0}{pi}{sup -} {nu}{sub {tau}} (K{sub S}{sup 0} {yields} {pi}{sup +}{pi}{sup -}) using the BABAR detector is presented. Using 124.4 fb{sup -1} of data we measure {Beta}({tau}{sup -} {yields} {bar K}{sup 0}{pi}{sup -}{nu}{sub {tau}}) = (0.830 {+-} 0.005(stat) {+-} 0.042(syst))%, which is the world's most precise measurement to date of this branching ratio, and is consistent with the current world average. This preliminary result, unlike most of the {Beta}({tau}{sup -} {yields} {bar K}{sup 0}{pi}{sup -}{nu}{sub {tau}}) measurements already published, is systematics dominated and so the biggest future improvement to this number should come from reducing the systematic uncertainties in the analysis. A study of the K{pi} mass spectrum, from which the strange (K{pi}) spectral function can be measured, reveals excess contributions above the K*(892) tail at higher K{pi} mass. While in the past this has been thought to be due to K*(892) - K*(1410) interference, we find that the K*(1410), whose branching ratio to K{pi} is approximately 7%, seems insufficient to explain the excess mass observed in the data. Instead, we perform a fit using a K*(892) - K*(1680) interference model and find better agreement. The discrepancy that remains could be …
Date: January 27, 2006
Creator: Lyon, Andrew J. & /SLAC, /Manchester U.
Object Type: Report
System: The UNT Digital Library
Surface structure of CdSe Nanorods revealed by combined X-rayabsorption fine structure measurements and ab-initio calculations (open access)

Surface structure of CdSe Nanorods revealed by combined X-rayabsorption fine structure measurements and ab-initio calculations

We report orientation-specific, surface-sensitive structural characterization of colloidal CdSe nanorods with extended X-ray absorption fine structure spectroscopy and ab-initio density functional theory calculations. Our measurements of crystallographically-aligned CdSe nanorods show that they have reconstructed Cd-rich surfaces. They exhibit orientation-dependent changes in interatomic distances which are qualitatively reproduced by our calculations. These calculations reveal that the measured interatomic distance anisotropy originates from the nanorod surface.
Date: January 27, 2006
Creator: Aruguete, Deborah A.; Marcus, Matthew A.; Li, Liang-shi; Williamson, Andrew; Fakra, Sirine; Gygi, Francois et al.
Object Type: Article
System: The UNT Digital Library
TANF, Child Care, Marriage Promotion, and Responsible Fatherhood Provisions in the Deficit Reduction Act of 2005 (S. 1932) (open access)

TANF, Child Care, Marriage Promotion, and Responsible Fatherhood Provisions in the Deficit Reduction Act of 2005 (S. 1932)

None
Date: January 27, 2006
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Taxes and Fiscal Year 2006 Budget Reconciliation: A Brief Summary (open access)

Taxes and Fiscal Year 2006 Budget Reconciliation: A Brief Summary

None
Date: January 27, 2006
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Temporary Protected Status: Current Immigration Policy and Issues (open access)

Temporary Protected Status: Current Immigration Policy and Issues

This report discusses Temporary Protected Status and other forms of blanket relief offered by the United States to aliens who are fleeing and unable to return to dangerous situations abroad. Updated January 27, 2006
Date: January 27, 2006
Creator: Wasem, Ruth Ellen & Ester, Karma
Object Type: Report
System: The UNT Digital Library
Texas Register, Volume 31, Number 4, Pages 441-606, January 27, 2006 (open access)

Texas Register, Volume 31, Number 4, Pages 441-606, January 27, 2006

A weekly publication, the Texas Register serves as the journal of state agency rulemaking for Texas. Information published in the Texas Register includes proposed, adopted, withdrawn and emergency rule actions, notices of state agency review of agency rules, governor's appointments, attorney general opinions, and miscellaneous documents such as requests for proposals. After adoption, these rulemaking actions are codified into the Texas Administrative Code.
Date: January 27, 2006
Creator: Texas. Secretary of State.
Object Type: Journal/Magazine/Newsletter
System: The Portal to Texas History
The U.N. Law of the Sea Convention and the United States: Developments Since October 2003 (open access)

The U.N. Law of the Sea Convention and the United States: Developments Since October 2003

None
Date: January 27, 2006
Creator: unknown
Object Type: Report
System: The UNT Digital Library
U.S. Armed Forces Abroad: Selected Congressional Roll Call Votes Since 1982 (open access)

U.S. Armed Forces Abroad: Selected Congressional Roll Call Votes Since 1982

None
Date: January 27, 2006
Creator: Mages, Lisa
Object Type: Report
System: The UNT Digital Library
U.S. Immigration Policy on Asylum Seekers (open access)

U.S. Immigration Policy on Asylum Seekers

None
Date: January 27, 2006
Creator: Wasem, Ruth Ellen
Object Type: Report
System: The UNT Digital Library
U.S. Nuclear Weapons: Changes in Policy and Force Structure (open access)

U.S. Nuclear Weapons: Changes in Policy and Force Structure

None
Date: January 27, 2006
Creator: Woolf, Amy F.
Object Type: Report
System: The UNT Digital Library
UNT Multicultural Center Related Student Organizations, 2005-06 (open access)

UNT Multicultural Center Related Student Organizations, 2005-06

A document listing the groups and organizations at UNT that are linked to the UNT Multicultural Center. The groups are separated into four sections based on the people group they represent. They are the African/African-American student, the Latino/a student, the Asian/South Asian/Middle Eastern student, and general multicultural student groups. The contact info for each is also listed in the furthest column.
Date: January 27, 2006
Creator: University of North Texas. Multicultural Center.
Object Type: Text
System: The UNT Digital Library
UNT Safer Spring Break, 2006 (open access)

UNT Safer Spring Break, 2006

A document advertising UNT's 2006 Safer Spring Break Week. There are five events across four days in the spring leading up to the break and students have an opportunity to win prizes if they attend the events. At the bottom are logos for several organizations involved at UNT.
Date: January 27, 2006
Creator: University of North Texas. Multicultural Center.
Object Type: Text
System: The UNT Digital Library
Water Resource Issues in the 109th Congress (open access)

Water Resource Issues in the 109th Congress

None
Date: January 27, 2006
Creator: Cody, Betsy A. & Hughes, H. Steven
Object Type: Report
System: The UNT Digital Library
The Work Opportunity Tax Credit (WOTC) and the Welfare-to-Work (WtW) Tax Credit (open access)

The Work Opportunity Tax Credit (WOTC) and the Welfare-to-Work (WtW) Tax Credit

None
Date: January 27, 2006
Creator: Levine, Linda
Object Type: Report
System: The UNT Digital Library