Production of strange resonances in AA collisions at $\sqrt{s_{{\it NN}}} = 17.3$, 62.4 and 200 GeV

Abstract

Hadronic resonances measured experimentally by invariant mass reconstruction in relativistic heavy-ion collisions contain contributions from different production channels and/or stages, i.e., leftovers of primordial hadronization, regenerations in hadronic rescatterings and those decayed from heavier resonances. We use a UrQMD model to systematically calculate the proportions of these different channels in final observation of resonances K*(892), Σ*(1385), ϕ(1020), Ξ*(1530) and Λ(1520) and investigate the time evolution of these resonance productions in AA collisions at [Formula: see text], 62.4 and 200 GeV. We study the yields, transverse momentum spectra and elliptic flows of these resonances and discuss the survival information of the primordial hadronization in final observations.

Energy Dependence of Anti-kaon-to-Kaon Ratio in High-energy Collisions --- A Simulated Study

“…To account for the quantum statistics, the hadrons are represented by Gaussian wave packets and effects such as, e.g., Pauli blocking are included in this model. Both UrQMD [29][30][31][32][33][34][35] and DPMJET III [36][37][38] models have been applied successfully to study high-energy collisions.…”

Energy dependence of resonance production in relativistic heavy ion collisions

“…Resonances such as K * 0 (892), φ(1020), Σ * (1385) have been measured by NA49 experiments at SPS energies, STAR experiments at RHIC energies and recent ALICE experiments at LHC energies, and rich experimental data of yields, transverse momentum p T spectra are reported [2][3][4][5][6]. Their production has been studied by several models or event generators such as UrQMD, AMPT and hybrid methods [7][8][9][10][11][12][13].…”