8,718 research outputs found
Europe vs. The United States: Is There a Trade-Off Between Mobility and Inequality?
This paper asses the scope of income mobility from a comparative perspective and explores if there is an observable relationship with inequality. More specifically, the main hypotheses to be tested are the existence of notable differences in mobility between the USA and the European Union which could offset the observed differences in inequality, the possible differences within the European Union and, finally, whether or not the factors which determine mobility differ greatly. To this end, a broad range of mobility indicators is used, their structure in each country is studied and the principal determinants are analyzed by means of different decomposition exercises.
Chiral asymmetry during the EWPT from CP-violating scattering off bubble walls
We compute a net electric current during a first order EWPT arising from the
asymmetric propagation of fermion chiral modes due to a CP-violating
interaction with the Higgs. The interaction is quantified in terms of a
CP-violating phase in the bubble wall that separate both false and true vacuum
phases. We comment on the possibility of this current to generate a seed
magnetic field and its implications for primordial magne- togenesis in the
early Universe.Comment: To appear in the proceedings of the XLVII of the International
Symposium of Multiparticle Dynamics, Tlaxcala, Mexico, September 10-15, 201
The improved nuclear parton distributions
In this paper we propose an improvement of the EKS nuclear parton
distributions for the small x region of high energy processes, where the
perturbative high parton density effects cannot be disregarded. We analyze the
behavior of the ratios and and verify that at small x
they are strongly modified when compared to the EKS predictions. The
implications of our results for the heavy ion collisions in RHIC and LHC are
discussed.Comment: 16 pages, 2 figure
Gluon structure function for deeply inelastic scattering with nucleus in QCD
In this talk we present the first calculation of the gluon structure function
for nucleus in QCD. We discuss the Glauber formula for the gluon structure
function and the violation of this simple approach that we anticipate in QCD.
(Talk given by E. Levin at QCD and nuclear target session at the Workshop on
Deep Inelastic Scattering and QCD, Paris, April 1995).Comment: 10 pages(latex file),4 fig (eps.files
Gluon density in nuclei
In this talk we present our detail study ( theory and numbers) [1] on the
shadowing corrections to the gluon structure functions for nuclei. Starting
from rather contraversial information on the nucleon structure function which
is originated by the recent HERA data, we develop the Glauber approach for the
gluon density in a nucleus based on Mueller formula [2] and estimate the value
of the shadowing corrections in this case. Than we calculate the first
corrections to the Glauber approach and show that these corrections are big.
Based on this practical observation we suggest the new evolution equation which
takes into account the shadowing corrections and solve it. We hope to convince
you that the new evolution equation gives a good theoretical tool to treat the
shadowing corrections for the gluons density in a nucleus and, therefore, it is
able to provide the theoretically reliable initial conditions for the time
evolution of the nucleus - nucleus cascade.Comment: Talk at RHIC'96, 43 pages, 23 figure
Locating the critical end point using the linear sigma model coupled to quarks
We use the linear sigma model coupled to quarks to compute the effective
potential beyond the mean field approximation, including the contribution of
the ring diagrams at finite temperature and baryon density. We determine the
model couplings and use them to study the phase diagram in the baryon chemical
potential-temperature plane and to locate the Critical End Point.Comment: 8 pages, 2 figures, conference paper from ISMD 201
- …