Münster 2011 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 40: Schwerionenkollisionen und QCD Phasen V

HK 40.8: Vortrag

Mittwoch, 23. März 2011, 18:15–18:30, HS AP

Mini-Jet Activity as Function of Charged Multiplicity — •Eva Sicking — CERN, Geneva, Switzerland — Institut für Kernphysik, University of Münster, Münster, Germany

A Large Ion Collider Experiment (ALICE) is the experiment at the Large Hadron Collider (LHC) optimized for heavy-ion collisions. ALICE is studying pp collisions for not only providing an important reference for heavy-ion measurements but as part of a unique pp physics program. In particular, high multiplicity pp collisions are an interesting field of study of particle production mechanisms.

Here we present the results of a di-hadron angular correlation analysis which has the aim to measure the number of multi-parton interactions and mini-jet fragmentation properties as a function of multiplicity. We discuss the difficulties encountered with standard correlation measurements at high multiplicities and present solutions to cope with these. Results for different center of mass energies are compared and the comparisons between data and different Monte Carlo generators are discussed.

ALICE is supported by BMBF.