Strangeness and charm production in high-energy heavy ion collisions

Abstract

We discuss the dynamical effects of strangeness and charm production in high-energy nuclear collisions. In order to understand the early stage dynamical evolution, it is necessary to study the transverse momentum distributions of multi-strange hadrons such as Ξ and Ω and charm mesons such as J/Ψ as a function of collision centrality.

ESRF-type lattice design and optimization for the High Energy Photon Source

“…With the other parameters unchanged, the analytical expression of the emittance is derived following Ref. [21] and is then minimized. As a result, the emittance is decreased from 100 pm•rad to 60 pm•rad.…”

Strange baryon production from nucleus–nucleus collisions at the AGS, SPS and RHIC

“…Particles with small hadronic rescattering cross sections suffer small final hadronic interactions with co-moving hadrons and therefore may carry the information of matter properties at the particle formation time. It is generally believed that φ meson, Ω (Ξ and Λ) and heavy quark particles (mostly D mesons at RHIC) satisfy the requirement for small hadronic cross sections and can be used to probe partonic matter properties [42]. Note that the information derived from these particles provides a snapshot of the matter properties at the particle formation time, the so called chemical freeze-out time, which lies at the phase boundary between quarks and hadrons.…”