Münster 2011 – scientific programme
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HK: Fachverband Physik der Hadronen und Kerne
HK 64: Schwerionenkollisionen und QCD Phasen VIII
HK 64.1: Group Report
Friday, March 25, 2011, 14:00–14:30, HS1
Measurement of the J/ψ Production Cross Section in pp Collisions at √s=7 TeV with ALICE at the LHC and Perspectives for PbPb Collisions — •Frederick Kramer1, Ionut Arsene2, Christoph Blume3, Julian Book1, Anton Andronic2, WooJin J. Park2, and Jens Wiechula4 — 1University of Frankfurt — 2GSI Darmstadt — 3University of Heidelberg — 4University of Tübingen
ALICE is the dedicated heavy-ion physics experiment at the Large Hadron Collider (LHC). It is designed to provide excellent capabilities to study the Quark-Gluon Plasma (QGP), the deconfined state of strongly-interacting matter, in the highest energy density regime opened up by the LHC. Quarkonia, bound states of heavy (charm or bottom) quarks such as the J/ψ, are crucial probes of the QGP. An essential baseline for measurements in AA collisions is high-precision data from pp collisions. Moreover, measurements in pp in the new energy domain of the LHC serve as a crucial test for competing models of quarkonium hadroproduction.
We will present first results of rapidity and transverse momentum distributions of the inclusive J/ψ production cross section. The analysis is based on the reconstruction of the channel J/ψ→e+e− using the central barrel detectors of ALICE. Furthermore, the status of the corresponding analysis in PbPb collisions will be given.