Study of the neutral mesons in Pb-Pb collisions at =2.76 TeV in the ALICE experiment at LHC

Hot Quarks 2014: Workshop for young scientists on the physics of ultrarelativistic nucleus-nucleus collisions

Leardini, Lucia^1

Physikalisches Institut, Heidelberg University, Germany^1

关键词: Differential invariants;    Lower energies;    Meson production;    Nuclear modification factors;    Pb-Pb collisions;    Photon conversion;    Transverse momenta;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/612/1/012005/pdf
DOI  :  10.1088/1742-6596/612/1/012005

来源: IOP

【 摘 要 】

The π0and η meson production in Pb-Pb collisions at √sNN=2.76 TeV is studied with the ALICE experiment at the LHC. The π0meson invariant yields and nuclear modification factor RAAare presented here in six centrality classes. The results are obtained using the Photon Conversion Method (PCM) and utilizing the PHOS detector, for the transverse momentum range 0.4 T0meson RAAis studied in different centrality classes and compared with results from experiments at lower energies, as a function of transverse momentum. The η meson production is studied using the PCM and utilizing the EMCal detector. The combination of these two independent methods will make possible the measurement of the η differential invariant cross section as a function of transverse momentum from 1 to 22 GeV/c in different centrality classes.