Frankfurt 2014 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 5: Schwerionenkollisionen und QCD Phasen
HK 5.5: Vortrag
Montag, 17. März 2014, 15:00–15:15, HZ 7
Feasibility study on χc identification with ALICE at the LHC — •Steffen Weber for the ALICE collaboration — Research Division and ExtreMe Matter Institute, GSI Helmholtzzentrum für Schwerionenforschung, Planckstr. 1, 64291 Darmstadt — Institut für Kernphysik, Technische Universität Darmstadt, Schlossgrabenstr. 9, 64289 Darmstadt
At the high energies of the LHC, cc pairs are abundantly produced. As they are produced in initial hard collisions, they probe the deconfined medium in Pb-Pb collisions over its entire lifetime.
Charmonium, a bound state of c and c quarks, is a special probe of deconfinement and also a subject of research in elementary hadronic collisions.
Excited states of charmonium, like the ψ(2S) and χc, are observables which could help to distinguish between regeneration and statistical hadronization models, which currently describe successfully the J/ψ data measured at the LHC. We present a study on the feasibility of identifying the χc charmonium state in ALICE, in pp, p-Pb and Pb-Pb collisions.