منابع مشابه
Spin-asymmetry energy of nuclear matter
We calculate the density-dependent spin-asymmetry energy S(kf ) of isospin-symmetric nuclear matter in the three-loop approximation of chiral perturbation theory. The interaction contributions to S(kf ) originate from one-pion exchange, iterated one-pion exchange, and (irreducible) two-pion exchange with no, single, and double virtual ∆-isobar excitation. We find that the truncation to 1π-excha...
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The symmetry energy of nuclear matter is a fundamental ingredient in the investigation of exotic nuclei, heavy-ion collisions, and astrophysical phenomena. New data from heavy-ion collisions can be used to extract the free symmetry energy and the internal symmetry energy at subsaturation densities and temperatures below 10 MeV. Conventional theoretical calculations of the symmetry energy based ...
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We calculate, in chiral perturbation theory, the change in the self-energy of decuplet baryons in nuclear matter. These self-energy shifts are relevant in studies of meson-nucleus scattering and of neutron stars. Our results are leading order in an expansion in powers of the ratio of characteristic momenta to the chiral symmetry-breaking scale (or the nucleon mass). Included are contact diagram...
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We report on recent calculations of the medium-induced gluon radiation off hard partons. The employed path-integral formalism reduces in limiting cases to the main “jet quenching” results of the existing literature. Moreover, it describes destructive interference effects between medium-independent and medium-induced radiation amplitudes. These affect the angular distribution and L-dependence of...
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Since June 2000 measurements of Au + Au reactions at the Relativistic Heavy Ion Collider (RHIC) at the Brookhaven National Laboratory (BNL) at √ s = 56, 130, 200 AGeV (GeV per nucleon pair) have revealed a variety of novel multiparticle phenomena not observed previously in ee, ep, pp collisions at any energy nor in nuclear collisions at lower (SPS/CERN and AGS/BNL) energies ( √ s = 17, 5 AGeV)....
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ژورنال
عنوان ژورنال: Physical Review
سال: 1960
ISSN: 0031-899X
DOI: 10.1103/physrev.119.248