Bochum 2018 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 39: Heavy Ion Collisions and QCD Phases VI

HK 39.4: Vortrag

Mittwoch, 28. Februar 2018, 17:30–17:45, HZO 60

Charm measurements in heavy ion collisions by NA61/SHINE at CERN SPS — •Aleksandra Snoch for the NA61/SHINE collaboration — Goethe-University Frankfurt am Main

NA61/SHINE is a fixed target experiment operating at the CERN Super-Proton-Synchrotron (SPS). The NA61/SHINE Collaboration studies properties of hadron production in nucleus-nucleus collisions. The primary aim is to uncover features of the phase transition between confined matter and quark gluon plasma. Within the current program data on p+p, Be+Be, Ar+Sc, Xe+La, and Pb+Pb collisions at beam momenta in the range 13A-150A GeV/c has been recorded.

This program is currently extended by measurements of charm hadron production in heavy ion collisions, which requires a significant detector upgrade.

In this talk I will discuss three questions that motivate the NA61/SHINE open charm studies:

• What is the mechanism of charm production?
• How charm production is influenced by the onset of deconfinement?
• How J/ψ production is changed by the presence of quark-gluon plasma?

To answer these questions, results on total number of cc quark pairs produced in heavy ion collisions must be provided. Foreseen accuracy of the corresponding NA61/SHINE data will be presented in reference to the physics motivation.