@Article{Ilner_etal2017,
author="Ilner, A.
and Cabrera, D.
and Markert, C.
and Bratkovskaya, E.",
title="K* vector meson resonance dynamics in heavy-ion collisions",
journal="Physical Review C",
year="2017",
publisher="Amer Physical Soc",
volume="95",
number="1",
pages="014903--15pp",
abstract="We study the strange vector meson (K*, (K) over bar*) dynamics in relativistic heavy-ion collisions based on the microscopic parton-hadron-string dynamics (PHSD) transport approach which incorporates partonic and hadronic degrees of freedom, a phase transition from hadronic to partonic matter-quark-gluon-plasma (QGP)-and a dynamical hadronization of quarks and antiquarks as well as final hadronic interactions. We investigate the role of in-medium effects on the K*, (K) over bar* meson dynamics by employing Breit-Wigner spectral functions for the K* with self-energies obtained from a self-consistent coupled-channelG-matrix approach. Furthermore, we confront the PHSD calculations with experimental data for p + p, Cu + Cu, and Au + Au collisions at energies up to root s(NN) = 200 GeV. Our analysis shows that, at relativistic energies, most of the final K* (observed experimentally) are produced during the late hadronic phase, dominantly by the K + pi -> K* channel, such that the fraction of the K* from the QGP is small and can hardly be reconstructed from the final observables. The influence of the in-medium effects on the K* dynamics at energies typical of the BNL Relativistic Heavy Ion Collider is rather modest due to their dominant production at low baryon densities (but high meson densities); however, it increases with decreasing beam energy. Moreover, we find that the additional cut on the invariant-mass region of the K* further influences the shape and the height of the final spectra. This imposes severe constraints on the interpretation of the experimental results.",
optnote="WOS:000391859800003",
optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=2918), last updated on Thu, 09 Feb 2017 09:56:17 +0000",
issn="2469-9985",
doi="10.1103/PhysRevC.95.014903",
opturl="http://arxiv.org/abs/1609.02778",
opturl="https://doi.org/10.1103/PhysRevC.95.014903",
archivePrefix="arXiv",
eprint="1609.02778",
language="English"
}