Covariance analysis of symmetry energy observables from heavy ion collision
نویسندگان
چکیده
منابع مشابه
Covariance Analysis of Symmetry Energy Observables from Heavy Ion Collision
Using covariance analysis, we quantify the correlations between the interaction parameters in a transport model and the experimental observables commonly used to extract information of the Equation of State of Asymmetric Nuclear Matter. Using the simulations of Sn+Sn, Sn+Sn and Sn+Sn reactions at beam energies of 50 and 120 MeV per nucleon, we have identified that the nucleon effective masses s...
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BEL~M(A,Z) = a,A asA2’3aJ2/A”3 + a,A“‘* asym (N-Z)2/A (1) where N, Z and A are the neutron, proton and mass numbers; a,, a, and a, are the volume, surface and Coulomb terms in the liquid drop model. aPA-“* is the pairing energy. The last term in Eq. (l), asym (N-Z)‘/A, accounts for the symmetry energy which favors nuclei with equal number of protons and neutrons. In most parametrizations, asym ...
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A model for energy, pressure and flow velocity distributions at the beginning of ultra-relativistic heavy ion collisions is presented, which can be used as an initial condition for hydrodynamic calculations. Our model takes into account baryon recoil for both target and projectile, arising from the acceleration of partons in an effective field, F µν , produced in the collision. The typical fiel...
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To bracket the importance of the pre-equilibrium stage on relativistic heavy-ion collision observables, we compare simulations where it is modeled by either free-streaming partons or fluid dynamics. These cases implement the assumptions of extremely weak vs. extremely strong coupling in the initial collision stage. Accounting for flow generated in the pre-equilibrium stage, we study the sensiti...
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Yun Cheng, ∗ L.P. Csernai, V.K. Magas, B.R. Schlei, D. Strottman 1 Institute of Physics and Technology, University of Bergen, Allegaten 55, N-5007 Bergen, Norway 2 Frankfurt Institute for Advanced Studies, Johann Wolfgang Goethe University, Ruth-Moufang-Str. 1, 60438 Frankfurt am Main, Germany 3 Institute of Particle Physics, Huazhong Normal University, Wuhan, 430079 China 4 MTA-KFKI, Research ...
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ژورنال
عنوان ژورنال: Physics Letters B
سال: 2015
ISSN: 0370-2693
DOI: 10.1016/j.physletb.2015.07.064