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Nuclear Theory·nucl-th

Friday·January 13, 2017

8 papers—3 primary·5 cross-listed

All8Primary3Cross-lists5
  1. 01

    Hyperon threshold and stellar radii

    Luiz L. Lopes🇧🇷 · Debora P. Menezes🇧🇷

    We study how the hyperon threshold influences the radius of the canonical neutron star in the light of the measurements found in the recent literature. We show that the onset of a new degree of freedom not only causes the well known reduction of the maximum mass, but also compacts the neutron stars with high central density. With the help of the strange mesons and , we show that it is possible to simulate very compact neutron stars keeping realistic hyperon potentials, MeV and in agreement with recents measurements. In the end we generalize these results showing that the onset of a yet not known dark matter particle with mass of 1.04 GeV is able to produce simultaneously a 2 neutron star and a canonical one with a radius of only 11.62 km.

    nucl-thastro-ph.HEhep-phJCAP(2018)·22 citations
  2. 02

    Missing resonance decays in thermal models

    V.V. Begun🇵🇱 · V.Yu. Vovchenko🇩🇪 · M.I. Gorenstein🇺🇦

    Detailed information on decay channel probabilities is absent for many high mass resonances, which are typically included in thermal models. In these cases, the sum over all known decay branching probabilities is smaller than 1. Due to this systematic uncertainty of the model, the exact charge conservation may appear to be violated. We estimate the corresponding number of missing charge states in the canonical ensemble formulation of the hadron resonance gas for p+p reactions at the SPS energy GeV: for baryon charge, for electric charge, and for strangeness. The value of the considered effect is 5-8%, which seems to be important enough to include it as a systematic error in the calculations within a hadron gas.

    nucl-thhep-exhep-phnucl-ex1 citation
  3. 03

    Dilepton and meson production in elementary and nuclear collisions at the NICA fixed target experiment

    Gy. Wolf \🇭🇺 · M. Zétényi🇭🇺

    We argue that the NICA fixed target experiment will be able to provide very important new experimental data on dilepton and meson production in the basically undiscovered energy domain between the SIS and SPS energies. Experimental information about elementary cross sections in this energy region is an essential ingredient of models of nuclear collisions in the same energy range.

    nucl-thhep-exhep-phnucl-exEPJA(2016)·0 citations

Affiliations

first authorsco-authorsvia INSPIRE