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Electroweak Radiative Corrections to the Parity-violating Asymmetry for SLAC Experiment E158 (open access)

Electroweak Radiative Corrections to the Parity-violating Asymmetry for SLAC Experiment E158

Electroweak radiative corrections to observable quantities of Moeller scattering of polarized particles are calculated. We emphasize the contribution induced by infrared divergent parts of cross section. The covariant method is used to remove infrared divergences, so that our results do not involve any unphysical parameters. When applied to the kinematics of SLAC E158 experiment, these corrections reduce the parity violating asymmetry by about -6.5% at E = 48 GeV and y = 0.5, and kinematically weighted 'hard' bremsstrahlung effect for SLAC E158 is {approx} 1%.
Date: April 4, 2012
Creator: Zykunov, Vladimir A. & U., /Gomel State Tech.
System: The UNT Digital Library
Preliminary Results of 3D-DDTC Pixel Detectors for the ATLAS Upgrade (open access)

Preliminary Results of 3D-DDTC Pixel Detectors for the ATLAS Upgrade

3D Silicon sensors fabricated at FBK-irst with the Double-side Double Type Column (DDTC) approach and columnar electrodes only partially etched through p-type substrates were tested in laboratory and in a 1.35 Tesla magnetic field with a 180 GeV pion beam at CERN SPS. The substrate thickness of the sensors is about 200 {mu}m, and different column depths are available, with overlaps between junction columns (etched from the front side) and ohmic columns (etched from the back side) in the range from 110 {mu}m to 150 {mu}m. The devices under test were bump bonded to the ATLAS Pixel readout chip (FEI3) at SELEX SI (Rome, Italy). We report leakage current and noise measurements, results of functional tests with Am{sup 241} {gamma}-ray sources, charge collection tests with Sr90 {beta}-source and an overview of preliminary results from the CERN beam test.
Date: April 4, 2012
Creator: La Rosa, Alessandro; Boscardin, M.; Dalla Betta, G. -F.; Darbo, G.; Gemme, C.; Pernegger, H. et al.
System: The UNT Digital Library
The X-Ray Source Application (XRSA) Test Cassette for Radiation Exposures at the OMEGA Laser (open access)

The X-Ray Source Application (XRSA) Test Cassette for Radiation Exposures at the OMEGA Laser

None
Date: April 4, 2012
Creator: Fournier, K B; Rekow, V; Emig, J; Fisher, J H; Newlander, C D; Horton, R H et al.
System: The UNT Digital Library
Radiochromic Film Measurement of Spatial Uniformity for a Laser Generated X-ray Environment (open access)

Radiochromic Film Measurement of Spatial Uniformity for a Laser Generated X-ray Environment

None
Date: April 4, 2012
Creator: Fisher, J. H.; Newlander, C. D.; Horton, R.; Fournier, K. B.; Emig, J.; Patterson, R. et al.
System: The UNT Digital Library
Measurements of the CKM Angle Alpha at BaBar (open access)

Measurements of the CKM Angle Alpha at BaBar

The authors present improved measurements of the branching fractions and CP-asymmetries fin the B{sup 0} {yields} {pi}{sup +}{pi}{sup -}, B{sup 0} {yields} {pi}{sup 0}{pi}{sup 0}, and B{sup +} {yields} {rho}{sup +}{rho}{sup 0} decays, which impact the determination of {alpha}. The combined branching fractions of B {yields} K{sub 1}(1270){pi} and B {yields} K{sub 1}(1400){pi} decays are measured for the first time and allow a novel determination of {alpha} in the B{sup 0} {yields} {alpha}{sub 1}(1260){sup {+-}}{pi}{sup {-+}} decay channel. These measurements are performed using the final dataset collected by the BaBar detector at the PEP-II B-factory. The primary goal of the experiments based at the B factories is to test the Cabibbo-Kobayashi-Maskawa (CKM) picture of CP violation in the standard model of electroweak interactions. This can be achieved by measuring the angles and sides of the Unitarity Triangle in a redundant way.
Date: April 4, 2012
Creator: Stracka, Simone
System: The UNT Digital Library
Energy transfer in ZnO-anthracene hybrid structure (open access)

Energy transfer in ZnO-anthracene hybrid structure

This article investigates the origin of the modification of the emission properties of the hybrid structure using temperature dependent and time-dependent photoluminescence spectroscopy.
Date: April 4, 2012
Creator: Shimada, Ryoko; Urban, Ben E.; Sharma, Mamta; Singh, Akhilesh; Avrutin, Vitaliy; MorkoƧ, Hadis et al.
System: The UNT Digital Library
Whole genome comparisons of Fragaria, Prunus and Malus reveal different modes of evolution between Rosaceous subfamilies (open access)

Whole genome comparisons of Fragaria, Prunus and Malus reveal different modes of evolution between Rosaceous subfamilies

Article discussing whole genome comparisons of Fragaria, Prunus and Malus revealing different modes of evolution between Rosaceous subfamilies.
Date: April 4, 2012
Creator: Jung, Sook; Cestaro, Alessandro; Troggio, Michela; Main, Dorrie; Zheng, Ping; Cho, Ilhyung et al.
System: The UNT Digital Library