Münster 2011 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
HK: Fachverband Physik der Hadronen und Kerne
HK 64: Schwerionenkollisionen und QCD Phasen VIII
HK 64.5: Vortrag
Freitag, 25. März 2011, 15:30–15:45, HS1
Reconstruction of open charm in the decay channel D0→K−π+ with ALICE — •Robert Grajcarek — Physikalisches Institut der Universität Heidelberg
A Large Ion Collider Experiment (ALICE) at the Large Hadron Collider (LHC) has been built in order to identify and characterize the quark gluon plasma (QGP) in high-energy nuclear collisions. As charm quarks are produced at the early stage of the collision, they serve as ideal probes for a QGP. In proton-proton collisions at the unprecedented high center-of-mass energy of √s=7 TeV charm production rates and their comparison to theory predictions are of utmost interest. The ALICE detector with its powerful capabilities such as particle identification, vertexing at sub-millimeter precision and tracking in a high multiplicity environment addresses the charm sector both in proton-proton and nuclear collisions. We report on preliminary results on open charm production via open charm meson decays, i.e. D0→K−π+ in proton-proton collisions using a secondary vertex finding procedure based on the Kalman filter. This algorithm, which is performed after reconstructing the trajectories of single particles, provides access to topological cut variables and the reduced χ2 of the full decay topology. If data becomes available we will present first results on open charm reconstruction of D0→K−π+ in Pb+Pb collisions at √SNN=2.76 TeV.