Joseph and Lindsay Ward

28-1Indian AffairsReport : Petition of J. and L. Ward. [447] Removal of Pottawatomie Indians from Illinois and Michigan.1844-10

Electroweak corrections to top-quark pair production in quark--antiquark annihilation

Top-quark physics plays an important role at hadron colliders such as the Tevatron at Fermilab or the LHC at CERN. Given the planned precision at these colliders, precise theoretical predictions are required. In this paper we present the complete electroweak corrections to QCD-induced top-quark pair production in quark--antiquark annihilation. In particular we provide compact analytic expressions for the differential partonic cross section, which will be useful for further theoretical investigations

The rare decays B --> K(*) anti-K(*) and R-parity violating supersymmetry

We study the branching ratios, the direct CP asymmetries in $B\to K^{(*)}\bar{K}^{(*)}$ decays and the polarization fractions of $B\to K^{*}\bar{K}^{*}$ decays by employing the QCD factorization in the minimal supersymmetric standard model with R-parity violation. We derive the new upper bounds on the relevant R-parity violating couplings from the latest experimental data of $B\to K^{(*)}\bar{K}^{(*)}$, and some of these constraints are stronger than the existing bounds. Using the constrained parameter spaces, we predict the R-parity violating effects on the other quantities in $B\to K^{(*)}\bar{K}^{(*)}$ decays which have not been measured yet. We find that the R-parity violating effects on the branching ratios and the direct $CP$ asymmetries could be large, nevertheless their effects on the longitudinal polarizations of $B\to K^{*}\bar{K}^{*}$ decays are small. Near future experiments can test these predictions and shrink the parameter spaces.Comment: 31 pages with 10 figure

ATLAS sensitivity to top quark and W boson polarization in ttˉt\bar{t} events

Stringent tests on top quark production and decay mechanisms are provided by the measurement of the top quark and W boson polarization. This paper presents a detailed study of these two measurements with the ATLAS detector, in the semileptonic (ttbar -> W W b bbar -> l nu j1 j2 b bbar) and dileptonic (ttbar -> W W b bbar -> l nu l nu b bbar) ttbar channels. It is based on leading-order Monte Carlo generators and on a fast simulation of the detector. A particular attention is paid to the systematic uncertainties, which dominate the statistical errors after one LHC year at low luminosity (10 fb^{-1}), and to the background estimate. Combining results from both channel studies, the longitudinal component of the W polarization (F\_0) can be measured with a 2% accuracy and the right-handed component (F\_R) with a 1% precision with 10 fb^{-1}. Even though the top quarks in ttbar pairs are not polarized, a large asymmetry is expected within the Standard Model in the like-spin versus unlike-spin pair production. A 4% precision on this asymmetry measurement is possible with 10 fb^{-1}, after combining results from both channel studies. These promising results are converted in a sensitivity to new physics, such as tWb anomalous couplings, top decay to charged Higgs boson, or new s-channels (heavy resonance, gravitons) in ttbar production.Comment: 41+2 pages, 20 figures, ATLAS scientific note SN-ATLAS-2005-05

hoodii

Phlox hoodii RichardsonHood's phlox;spiny phlox;moss phlox;carpet phloxphlox de HoodhoodiiOil Basin end Mt. GalwayRocky slopes dry north east drainage basin.6500 feetHerb. White

spicatum

Trisetum spicatum (Linnaeus) K. Richternarrow false oats;spike trisetumtrisète à épispicatumMile 51, Dempster Highwayin gravel pit; soil wet4500 fee

amplexicaulis

Arnica lanceolata subsp. prima (Maguire) Strother & S.J. WolfArnica amplexicaulisWestcastle; Gravenstafel Lake; terminal morrainealpine meadow6600

acris

Erigeron acris Linnaeusbitter fleabanevergerette acrealong trail to Little Highwood Pass, west of Hwy #40 at Highwood Pass

Company 529 News

MSS B 540 Civilian Conservation Corps Newsletters, 1935-1941Newsletters of Company 529, 193

Glacier Ice Sheet

MSS B 540 Civilian Conservation Corps Newsletters, 1935-1941Newsletters of Company 529, 193