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Nuclear Theory·nucl-th

Wednesday·September 23, 2015

11 papers—6 primary·5 cross-listed

All11Primary6Cross-lists5
  1. 01

    Photoproduction of the and

    Ju-Jun Xie🇨🇳 · Eulogio Oset🇨🇳 · Li-Sheng Geng🇨🇳

    Assuming that the and resonances are dynamically generated states from the vector meson-vector meson interactions in -wave with spin , we study the and reactions. These reactions proceed in the following way: the incoming photon first mutates into a , , or meson via vector meson dominance, which then interacts with the , or emitted by the incoming proton to form the tensor mesons and . The picture is simple and has no free parameters, as all the parameters of the mechanism have been fixed in previous studies. We predict the differential and total cross sections of these reactions. The results can be tested in future experiments and therefore offer new clues on the nature of these tensor states.

    nucl-thhep-exhep-phnucl-exPRC(2016)·17 citations
  2. 02

    Properties of light (anti)nuclei and (anti) hypertriton production in Pb-Pb collisions at = 2.76 TeV

    Zhi-Lei She · Gang Chen🇨🇳 · Hong-ge Xu · Ting-ting Zeng · Di-Kai Li

    We investigate the properties of light (anti)nuclei and (anti)hypertriton production in Pb-Pb collisions at TeV, based on the parton and hadron cascade and dynamically constrained phase-space coalescence (PACIAE + DCPC) model. We found that the yields of light (anti)nuclei and (anti)hypertriton strongly depend on the centrality, i.e., their yields decrease rapidly with the increase of centrality bins, but their yield ratios are independent of centrality. The results of theoretical model are well consistent with ALICE data. Furthermore, we found that the integrated yields of (anti)nuclei per participant nucleon increase from peripheral to central collisions more rapidly with increasing mass number. The transverse momentum distributions of and are also discussed in the 0-10% most central Pb-Pb collisions.The coalescence parameters of light (anti)nuclei and (anti)hypernuclei are analyzed.

    nucl-thhep-phEPJA(2016)·19 citations
  4. 04

    Common Approaches in Description of Ordinary Liquids and Hadronic Matter

    K. V. Cherevko🇺🇦 · L.L. Jenkovszky🇺🇦 · V. M. Sysoev🇺🇦 · Feng-Shou Zhang🇨🇳

    This work is an attempt to give a brief overview of the implementation of the statistical ther- modynamics to hadronic matter. The possibility to use the hydrodynamic approach for developing the physical model of the formation of exotic structures in the head-on intermediate-energy heavy ion collisions is discussed. That approach is shown to be able to provide simple analytical expressions describing each step of the collision process. This allows for extracting the data concerning nuclear matter properties (surface tension, compressibility, etc.) from the properties of observed fragments. The advantages of the thermodynamic analysis of phase trajectories of the system in heavy ion collisions are discussed. Within the thermodynamic approach, the method to evaluate the curvature correction to the surface tension from the nuclear matter equation of state is described. The possibility to use statistical thermodynamics in the studies of hadronic matter and quantum liquids is discussed.

    nucl-thUkr. J. Phys. 2015, Vol. 60, N 8, p.708-7…·0 citations
  5. 05

    Pseudorapidity dependence of short-range correlations from a multi-phase transport model

    Meijuan Wang🇨🇳 · Gang Chen🇨🇳 · Guoliang Ma🇨🇳 · Yuanfang Wu🇨🇳

    Using a multi-phase transport model (AMPT) that includes both initial partonic and hadronic interactions, we study neighboring bin multiplicity correlations as a function of pseudorapidity in Au+Au collisions at GeV. It is observed that for 19.6GeV Au+Au collisions, the short-range correlations of final particles have a trough at central pseudorapidity, while for 19.6GeV AuAu collisions, the short-range correlations of final particles have a peak at central pseudorapidity. Our findings indicate that the pseudorapidity dependence of short-range correlations should contain some new physical information, and are not a simple result of the pseudorapidity distribution of final particles. The AMPT results with and without hadronic scattering are compared. It is found that hadron scattering can only increase the short-range correlations to some level, but is not responsible for the different correlation shapes for different energies. Further study shows that the different pseudorapidity dependence of short-range correlations are mainly due to partonic evolution and the following hadronization scheme.

    nucl-thhep-phCPC(2016)·0 citations
  6. 06

    FRIGA, A New Approach To Identify Isotopes and Hypernuclei In N-Body Transport Models

    A. Le Fèvre🇩🇪 · Y. Leifels🇩🇪 · J. Aichelin🇫🇷 · Ch. Hartnack🇫🇷 · V. Kireyev🇷🇺 · E. Bratkovskaya🇩🇪

    We present a new algorithm to identify fragments in computer simulations of relativistic heavy ion collisions. It is based on the simulated annealing technique and can be applied to n-body transport models like the Quantum Molecular Dynamics. This new approach is able to predict isotope yields as well as hyper-nucleus production. In order to illustrate its predicting power, we confront this new method to experimental data, and show the sensitivity on the parameters which govern the cluster formation.

    nucl-thJ.Phys.Conf.Ser.(2016)·15 citations

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