نتایج جستجو برای: 083
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We present a direct measurement of the parity-violating parameter A b by analyzing the left-right forward-backward asymmetry of b quarks in polarized Z 0 decays with a nal state kaon charge tag. The 1994-1995 SLD data sample of 100,000 hadronic Z 0 decays produced with a highly polarized electron beam is used for this analysis. A b-enriched sample is obtained from a vertex-mass tag using a CCD-...
Photoproduction at HERA is studied in ep collisions, with the ZEUS detector, for γp centre-of-mass energies ranging from 130-270 GeV. A sample of events with two high-pT jets (pT > 6 GeV, η < 1.6) and a third cluster in the approximate direction of the electron beam is isolated using a clustering algorithm. These events are mostly due to resolved photoproduction. The third cluster is identified...
As part of the ANDRILL McMurdo Ice Shelf (MIS) Project two comprehensive sets of geophysical data were collected on ice at the AND-1B drillsite. Whole-core physical properties were determined with high vertical resolution to a depth of 1285 mbsf. A multi-sensor-core-logger was used to determine bulk density, sonic velocity, magnetic susceptibility and electrical resistivity. After drilling, a s...
This research evaluated the efficacy of a psycho-educational Internet self-help tool to educate and support recently (1-6 months) bereaved individuals. The goal of the website was to help users normalize their grief to enhance their adaptive adjustment. A randomized controlled trial evaluated the gains in social cognitive theory constructs and state anxiety. Compared to the control group (N = 3...
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We discuss an inverse approach to Structure-from-Motion that enables the geolocation of an unmanned aerial system using a single, two-dimensional image correlated to a digital surface model. This approach allows the calculation of airborne xyz position coordinates as well as the orientation parameters of omega (ù), phi (ö), and kappa (ê). This theoretical investigation with idealized models see...
We report simulation results for the LHC Higgs search with two charged leptons (electrons or muons) and missing energy from the decay chain H ! W+W ! `+ `0 . It is shown that a few simple experimental criteria allow to distinguish between events originating from H ! W+W and the non resonant production of W+W X at the LHC. We also include backgrounds from t t andWt(b) production. Using the late...
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