Recent STAR heavy-ion results

Recent Results from Heavy Ion Collisions

The purpose of the current heavy ion programs at CERN (Switzerland) and Brookhaven National Laboratory (USA) is to probe strongly interacting matter under extreme conditions, i.e. at high densities and temperatures. The central subject of these studies is the transition from the quark-gluon plasma to hadronic matter. In the early phases of ultra-relativistic heavy ion collisions, when a hot and...

Heavy Ion Collisions by STAR

We present the first measurement of reconstructed jets in ultra-relativistic heavy ion collisions. Utilizing the large coverage of the STAR Time Projection Chamber and Electromagnetic Calorimeter, we apply several modern jet reconstruction algorithms and background subtraction techniques and explore their systematic uncertainties in heavy ion events. The differential spectrum for inclusive jet ...

Recent Results from CVD-Diamond Heavy-Ion Detectors

Latest results from radiation hardness measurements as well as single-particle pulse shape parameters, pulse-height distributions and time spectra are presented. An intrinsic time resolution of 29 ps is achieved with 52Cr ions of 650 MeV/amu and of 53 ps with 12C ions of 1.5 GeV/amu, respectively. The resolution is by 20% worse when increasing the beam intensity from 106 ions/s to 108 ions/s. P...

Recent Heavy Ion Results from the ATLAS Experiment

Recent lattice results relevant for heavy ion collisions ∗

Lattice QCD provides us with the most systematic way to calculate non-perturbative hadronic quantities directly from the first principles of QCD, without resorting to models and effective theories. Because a simulation of the fully realistic case is still difficult, we have to carry out several extrapolations to extract physical quantities of phenomenological relevance. These include the contin...