Pulsed field emission from cold carbon-nanotube cathodes placed in a radiofrequency resonant cavity was directly measured. The cathodes were located on the backplate of a conventional 1+1/2 -cell resonant cavity operating ...
This is an invited News & View that comment on the paper published in the same issue of Nature and detailing a new regime for positrons acceleration in a plasma-wakefield accelerator.
Collinear high-gradient ${\cal O} (GV/m)$ beam-driven wakefield methods for charged-particle acceleration could be critical to the realization of compact, cost-efficient, accelerators, e.g., in support of TeV-scale lepton ...
We present a search for the standard model (SM) Higgs boson produced in association with a Z boson in 9.7 fb(-1) of p (p) over bar collisions collected with the D0 detector at the Fermilab Tevatron Collider at root s = ...
We present a search for the standard model Higgs boson using events with two oppositely charged
leptons and large missing transverse energy as expected in H -> WW decays. The events are selected from
data corresponding ...
Changes to the structure of polystyrene melt films as measured through the spectrum of density
fluctuations have been observed as a function of film thickness down to the polymer radius of gyration (Rg). Films thicker ...
By embedding ‘‘dilute’’ gold nanoparticles in single polystyrene thin films as ‘‘markers’’, we probe
the local viscosity of the free surface at temperatures far above the glass transition temperature (Tg). The
technique ...
A method is developed for calculating the small-angle x-ray scattering originating from within the interior of
a thin film under grazing incidence illumination. This offers the possibility of using x-ray scattering to ...
We report the origin of the effect of nanoscale confinement on the local viscosity of entangled
polystyrene (PS) films at temperatures far above the glass transition temperature. By using marker
x-ray photon correlation ...
We have fabricated a stack of five 1,2-dipalmitoyl-sn-3-phosphatidylethanolamine (DPPE) bilayers supported on a polished silicon substrate in excess water. The density profile of these stacks normal to the substrate was ...
The top quark is the heaviest known elementary particle, with a mass about 40 times larger than the
mass of its isospin partner, the bottom quark. It decays almost 100% of the time to a W boson and a bottom
quark. Using ...
We present a measurement of the elastic differential cross section dσ( pp-→ pp-)/dt as a function of
the four-momentum-transfer squared t. The data sample corresponds to an integrated luminosity of ≈ 31 nb-1 collected ...
We report the combination of recent measurements of the helicity of the W boson from top quark decay by the CDF and D0 collaborations, based on data samples corresponding to integrated luminosities of the 2.7-5.4 fb-1 of ...
We study the processes pp- → WZ→ l± vl+ l- and pp-→ZZ →l+ l- vv-, where l = e or μ. Using 8.6 fb-1 of integrated luminosity collected by the D0 experiment at the Femilab Tevatron collider, we measure the WZ production ...
We present a measurement of the top-quark mass (mt) in pp- collisions at √s=1.96TeV
using tt- events with two leptons (ee, e μ, or μμ) and accompanying jets in 4.3 fb-1 of data collected with the D0
detector at the ...
We present an improved determination of the total width of the top quark, Γt, using 5.4 fb-1 of
integrated luminosity collected by the D0 Collaboration at the Tevatron pp- Collider.
The total width Γt is
extracted from ...
We present the first search for new phenomena in Zγ final states with large missing transverse energy
using data corresponding to an integrated luminosity of 6.2 fb-1 collected with the D0 experiment in pp-
collisions ...
We measure the Λ0/b lifetime in the fully reconstructed decay Λ 0b→J/Ψ Λ0 using 10.4 fb-1 of pp- collisions collected with the D0 detector at √s=1.96TeV. The lifetime of the topologically similar decay channel B0→J/ΨK0S ...
Using data collected with the D0 detector at the Fermilab Tevatron Collider, corresponding to 5:3 fb-1
of integrated luminosity, we search for violation of Lorentz invariance by examining the tt production
cross section ...
Using data corresponding to an integrated luminosity of 1:3 fb-1, we observe a narrow mass state decaying into Υ (1S) + γ, where the Υ(1S) meson is detected by its decay into a pair of oppositely charged muons, and
the ...