Search results for " Neutral"
showing 10 items of 654 documents
Entangled states of trapped ions allow measuring the magnetic field gradient produced by a single atomic spin
2012
Using trapped ions in an entangled state we propose detecting a magnetic dipole of a single atom at distance of a few $\mu$m. This requires a measurement of the magnetic field gradient at a level of about 10$^{-13}$ Tesla/$\mu$m. We discuss applications e.g. in determining a wide variation of ionic magnetic moments, for investigating the magnetic substructure of ions with a level structure not accessible for optical cooling and detection,and for studying exotic or rare ions, and molecular ions. The scheme may also be used for measureing spin imbalances of neutral atoms or atomic ensembles trapped by optical dipole forces. As the proposed method relies on techniques well established in ion t…
Quantum transport of single neutral atoms
2007
The state-selective (quantum) transport of single neutral atoms stored in a one dimensional optical lattice is a promising technique to implement controlled atomic interaction using coherent cold collisions. This is required in several schemes of quantum information processing. Here, we present a technical implementation of the quantum transport scheme for one, two and more caesium atoms, as well as the manipulation and detection of their internal states.
Search for flavor changing neutral currents in decays of top quarks
2011
We present a search for flavor changing neutral currents in decays of top quarks. The analysis is based on a search for ttbar -> l'null + jets (l, l' = e, mu) final states using 4.1 fb^-1 of integrated luminosity of ppbar collisions at sqrt(s) = 1.96 TeV. We extract limits on the branching ratio B(t -> Zq) (q = u, c quarks), assuming anomalous tuZ or tcZ couplings. We do not observe any sign of such anomalous coupling and set a limit of B < 3.2% at 95% C.L.
Fluorescent Sensing of Maleate versus Fumarate by a Neutral Cyclohexane Based Thiourea Receptor.
2006
A new cyclohexyl based fluorescent anion receptor, is able to recognize maleate versus fumarate both as their TMA salts. Costero Nieto, Ana Maria, Ana.Costero@uv.es ; Colera Llavata, Manuel, Manuel.Colera@uv.es ; Gaviña Costero, Pablo, Pablo.Gavina@uv.es ; Gil Grau, Salvador, Salvador.Gil@uv.es
"Table 16" of "Measurement of event shape and inclusive distributions at s**(1/2) = 130-GeV and 136-GeV."
1997
Narrow Hemisphere Broadening, DBMIN. Axis definition is from charged corrected plus neutral particles.
"Table 24" of "Tuning and test of fragmentation models based on identified particles and precision event shape data."
1996
Narrow Hemisphere Broadening, BMIN. Corrected to final state particles.
"Table 21" of "Tuning and test of fragmentation models based on identified particles and precision event shape data."
1996
Light-Hemisphere-Mass distribution. Corrected to final state particles.
"N-1 for SR3$\ell$, $m^{min}_{T}$ " of "Search for trilepton resonances from chargino and neutralino pair production in $\sqrt{s}$ = 13 TeV $pp$ coll…
2021
$m^{min}_{T}$ kinematic distribution in the signal regions showing the data and the post-fit background in sr3$\ell$. The fit uses all CR and SRs, and the distributions are shown inclusively in $m_{Z\ell}$. The full event selection for each of the corresponding regions is applied except for the variable shown, where the selection is indicated by a blue arrow. the first (last) bin includes underflow (overflow) events. The other category mostly consists of $tWZ$, $t\bar{t}W$, and $tZ$ processes. The hatched bands indicate the combined theoretical, experimental, and MC statistical uncertainties. The bottom panel shows the ratio between the data and the post-fit background prediction.
Magic numbers, excitation levels, and other properties of small neutral math clusters (N < 50)
2006
The ground-state energies and the radial and pair distribution functions of neutral math clusters are systematically calculated by the diffusion Monte Carlo method in steps of one math atom from 3 to 50 atoms. In addition the chemical potential and the low-lying excitation levels of each cluster are determined with high precision. These calculations reveal that the “magic numbers” observed in experimental math cluster size distributions, measured for free jet gas expansions by nondestructive matter-wave diffraction, are not caused by enhanced stabilities. Instead they are explained in terms of an enhanced growth due to sharp peaks in the equilibrium concentrations in the early part of the e…
Measuring Globalization of International Trade: Theory and Evidence
2009
Measuring globalization requires a Standard of Perfect International Integration as a benchmark that a single world space would reach under conditions of geographic neutrality in international trade. We define this standard and present indicators for openness, connectedness and integration, for each specific economy, and for the world economy. We apply our indicators to data on trade flows for 59 countries for the 1967-2004 period. Results show that trade integration is higher than what traditional openness indicators suggest. Several economies find high levels of integration, but the low degree of openness in some large economies jeopardizes the progress of globalization. © 2008 Elsevier L…