Results 91 to 100 of about 1,540,061 (200)

Light Propagation in Inhomogeneous Universes. III. Distributions of Image Separations

, 2002
Using an analytical model, we compute the distribution of image separations resulting from gravitational lensing of distant sources, for 7 COBE-normalized CDM models with various combinations of Omega_0 and lambda_0.
Martel, Hugo, Matzner, Richard, Premadi, Premana   +2 more
core   +2 more sources

Extinction and Scattering of Light by Magnetic Colloidal Nanoparticles [PDF]

Журнал нано- та електронної фізики, 2015
The peculiarities of scattering and extinction of light by colloids with different concentrations of magnetite nanoparticles are investigated. The light absorption effect on spectral dependencies of optical density of magnetic colloid are observed ...
C.V. Yerin
doaj  

Current in the light-front Bethe-Salpeter formalism II: Applications

, 2002
We pursue applications of the light-front reduction of current matrix elements in the Bethe-Salpeter formalism. The normalization of the reduced wave function is derived from the covariant framework and related to non-valence probabilities using familiar
A.V. Radyushkin, A.V. Radyushkin, A.V. Radyushkin, B. C. Tiburzi, B. Lehmann-Dronke, B.C. Tiburzi, B.C. Tiburzi, B.L. Bakker, D. Müller, F. Antonuccio, G. A. Miller, G.B. West, G.P. Lepage, J.C. Collins, J.H. Sales, J.H. Sales, J.R. Cooke, M. Burkardt, M. Diehl, M. Diehl, M. Diehl, M. Diehl, M. Diehl, M.V. Polyakov, R.M. Woloshyn, S.D. Drell, S.J. Brodsky, X.-D. Ji, X.-D. Ji   +28 more
core   +1 more source

Quark and gluon distributions in ρ-meson from basis light-front quantization

Physics Letters B
We solve for the ρ-meson's wave functions from a light-front QCD Hamiltonian determined for its constituent quark-antiquark and quark-antiquark-gluon Fock components, with a three-dimensional confinement using basis light-front quantization.
Satvir Kaur, Jiatong Wu, Zhi Hu, Jiangshan Lan, Chandan Mondal, Xingbo Zhao, James P. Vary   +6 more
doaj   +1 more source

Elastic scattering and total reaction cross sections with low-energy light radioactive ion beams.

EPJ Web of Conferences, 2011
Elastic scattering experiments have being performed with low-energy radioactive ion beams produced by the RIBRAS facility in Sao Paulo, Brazil. Here I present the results for elastic scattering of 6He on several targets and light beams on 12C target ...
Guimarães Valdir
doaj   +1 more source

Power-Law Wave Functions and Generalized Parton Distributions for Pion

, 2002
We propose a model for generalized parton distributions of the pion based on the power-law ansatz for the effective light-cone wave function.Comment: 27 pages, Latex; Revised and Extended Version, to be published in Phys. Rev.
Mukherjee, A., Musatov, I. V., Pauli, H. C., Radyushkin, A. V.   +3 more
core   +2 more sources

Short-range correlations in two-nucleon knockout reactions

, 2005
A theory of short-range correlations in two-nucleon removal due to elastic breakup (diffraction dissociation) on a light target is developed. Fingerprints of these correlations will appear in momentum distributions of back-to-back emission of the nucleon
Barbieri, Bazin, Bertulani, Bertulani, Bertulani, Bertulani, Bertulani, Bertulani, Bohr, Boridy, C.A. Bertulani, Chomaz, Deutchman, Dimitrova, Feshbach, Feshbach, Frankfurt, Frankfurt, Fujita, Glasmacher, Glauber, Gomes, Hansen, Hansen, Hencken, Hussein, Hüfner, Jastrow, King, MacGregor, Navarra, Norbury, Pandharipande, Ray, Ryckebusch, Simon, Tang, Tostevin, Townsend, Townsend   +39 more
core   +1 more source

Transverse-momentum-dependent gluon distributions of proton within basis light-front quantization

Physics Letters B
Gluon transverse-momentum dependent distributions (TMDs) are very important for revealing the internal structure of the proton. They correspond to a variety of experiments and are among the major tasks of the future electron-ion colliders. In this paper,
Hongyao Yu, Zhi Hu, Siqi Xu, Chandan Mondal, Xingbo Zhao, James P. Vary   +5 more
doaj   +1 more source

Finite continuum quasi distributions from lattice QCD

EPJ Web of Conferences, 2018
We present a new approach to extracting continuum quasi distributions from lattice QCD. Quasi distributions are defined by matrix elements of a Wilson-line operator extended in a spatial direction, evaluated between nucleon states at finite momentum.
Monahan Christopher, Orginos Kostas
doaj   +1 more source

Exploring twist-4 chiral-even GPDs in the light-front quark-diquark model

Nuclear Physics B
In this work, we delve into the realm of quantum chromodynamics (QCD) by calculating twist-4 chiral-even generalized parton distributions (GPDs), within the context of the light-front quark-diquark model (LFQDM), focusing specifically on the intriguing ...
Shubham Sharma, Harleen Dahiya
doaj   +1 more source