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30 papers · 1 filter
Coherent bremsstrahlung, coherent pair production, birefringence and polarimetry in the 20-170 GeV energy range using aligned crystals
NA59 Collaboration, A. Apyan, R. O. Avakian +27
The processes of coherent bremsstrahlung (CB) and coherent pair production (CPP) based on aligned crystal targets have been studied in the energy range 20-170 GeV. The experimental…
Flat Cosmology with Coupled Matter and Dark Energies
A. -M. M. Abdel-Rahman, Ihab F. Riad
Three models of a flat universe of coupled matter and dark energies with different low-redshift parameterizations of the dark energy equation of state are considered. The dark ener…
Unveiling the nature of INTEGRAL objects through optical spectroscopy. III. Observations of seven southern sources
N. Masetti, M. L. Pretorius, E. Palazzi +9
Context. The detection, thanks to the INTEGRAL satellite, of a number of new hard X-ray sources calls for the identification of their nature by means of observations at longer wave…
Comparison of Chemical Freeze-Out Criteria in Heavy-Ion Collisions
J. Cleymans, H. Oeschler, K. Redlich +1
One of the most remarkable results to emerge from heavy-ion collisions over the past two decades is the striking regularity shown by particle yields at all energies. This has led t…
Chiral condensates from tau decay: a critical reappraisal
Jose Bordes, Cesareo A. Dominguez, Jose Penarrocha +1
The saturation of QCD chiral sum rules is reanalyzed in view of the new and complete analysis of the ALEPH experimental data on the difference between vector and axial-vector corre…
Alternative Methods of Describing Structure Formation in the Lemaitre-Tolman Model
Charles Hellaby, Andrzej Krasinski
We describe several new ways of specifying the behaviour of Lemaitre-Tolman (LT) models, in each case presenting the method for obtaining the LT arbitrary functions from the given…