We present a measurement of the elastic differential cross section \(d\sigma(p\bar{p}\rightarrow p\bar{p})/dt\) as a function of the four-momentum-transfer squared t. The data sample corresponds to ...an integrated luminosity of \(\approx 31 nb^{-1}\) collected with the D0 detector using dedicated Tevatron \(p\bar{p} \) Collider operating conditions at sqrt(s) = 1.96 TeV and covers the range \(0.26 <|t|< 1.2 GeV^2\). For \(|t|<0.6 GeV^2\), d\sigma/dt is described by an exponential function of the form \(Ae^{-b|t|}\) with a slope parameter \( b = 16.86 \pm 0.10(stat) \pm 0.20(syst) GeV^{-2}\). A change in slope is observed at \(|t| \approx 0.6 GeV^2\), followed by a more gradual |t| dependence with increasing values of |t|.
We present a direct measurement of trilinear gauge boson couplings at gamma WW and ZWW vertices inWW and WZ events produced in p (p) over bar collisions at root s = 1:96 TeV. We consider events with ...one electron or muon, missing transverse energy, and at least two jets. The data were collected using the D0 detector and correspond to 1:1 fb(-1) of integrated luminosity. Considering two different relations between the couplings at the gamma WW and ZWW vertices, we measure these couplings at 68% C.L. to be kappa(gamma) = 1.07(-0.29)(+0.26) lambda = 0.00(-0.06)(+0.00), and g(1)(Z) = 1.04(-0.09)(+0.09) in a scenario respecting SU(2)(L) circle times U(1)(Y) gauge symmetry and kappa = 1.04(-0.11)(+0.11) and lambda = 0.00(-0.06)(+0.06) in an "equal couplings'' scenario.
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A case of thyroid carcinoma metastatic to the mandible is presented. Particular attention has been called to its extremely vascular nature and a recommendation has been made that all lesions of such ...suspected vascularity should be preoperatively studied by angiography in an effort to provide insight into the nature of the lesion as well as the exact blood supply. With this information, appropriate devascularization either by surgical ligation or intravascular embolization can be performed before biopsy and hence sudden and potentially overwhelming hemorrhage during incisional or excisional surgery can be avoided.
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