Results 11 to 20 of about 10,969,596 (168)

The Construction of Gauge-Links in Arbitrary Hard Processes [PDF]

open access: yes, 2006
Transverse momentum dependent parton distribution and fragmentation functions are described by hadronic matrix elements of bilocal products of field operators off the light-cone. These bilocal products contain gauge-links, as required by gauge-invariance.
261   +43 more
core   +1 more source

Updating the Unitarity Triangle: Top Quark Mass Versus Nonperturbative Uncertainties [PDF]

open access: yes, 1994
We summarize the present knowledge on the non-perturbative hadronic inputs needed in the analysis of $B^0$-$\bar B^0$ mixing and the CP-violating parameter $\varepsilon$ of the $K^0$-$\bar K^0$ system.
A. Pich   +109 more
core   +2 more sources

Accumulation of chromium metastable atoms into an Optical Trap

open access: yes, 2007
We report the fast accumulation of a large number of metastable 52Cr atoms in a mixed trap, formed by the superposition of a strongly confining optical trap and a quadrupolar magnetic trap.
102   +21 more
core   +2 more sources

Measurement of the LT-asymmetry in \pi^0 electroproduction at the energy of the \Delta (1232) resonance

open access: yes, 2006
The reaction p(e,e'p)pi^0 has been studied at Q^2=0.2 (GeV/c)^2 in the region of W=1232 MeV. From measurements left and right of q, cross section asymmetries \rho_LT have been obtained in forward kinematics \rho_LT(\theta_\pi^0=20deg) = (-11.68 +/- 2 ...
12   +66 more
core   +1 more source

Duality Versus Supersymmetry and Compactification [PDF]

open access: yes, 1994
We study the interplay between T-duality, compactification and supersymmetry. We prove that when the original configuration has unbroken space-time supersymmetries, the dual configuration also does if a special condition is met: the Killing spinors of ...
A. Chamseddine   +26 more
core   +4 more sources

Reduction of the negative environmental impact of motor transport through the use of intelligent transport systems [PDF]

open access: yesE3S Web of Conferences
The work investigates the anthropogenic impact of motor transport on the environment of urbanized areas, including emissions of pollutants into the air, noise and vibration effects.
Kirilchuk Iraida   +3 more
doaj   +1 more source

Transport of a quantum degenerate heteronuclear Bose-Fermi mixture in a harmonic trap

open access: yes, 2008
We report on the transport of mixed quantum degenerate gases of bosonic 87Rb and fermionic 40K in a harmonic potential provided by a modified QUIC trap.
1   +46 more
core   +1 more source

Anderson localization of elementary excitations in a one dimensional Bose-Einstein condensate

open access: yes, 2006
We study the elementary excitations of a transversely confined Bose-Einstein condensate in presence of a weak axial random potential. We determine the localization length (i) in the hydrodynamical low energy regime, for a domain of linear densities ...
72   +34 more
core   +2 more sources

Emergence of superfluid transport in a dynamical system of ultracold atoms

open access: yes, 2006
The dynamics of a Bose-Einstein condensate is studied theoretically in a combined periodic plus harmonic external potential. Different dynamical regimes of stable and unstable collective dipole and Bloch oscillations are analysed in terms of a quantum ...
293   +28 more
core   +1 more source

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