Low-Mass Dielectron Production in p-Pb and Pb_Pb Collisions with ALICE

Workshop for young scientists on the physics of ultrarelativistic nucleus-nucleus collisions 2016

Klein, Carsten^1

Institut für Kernphysik, Goethe-Universität, Frankfurt am Main, Germany^1

关键词: Dielectrons;    Effective temperature;    Feasibility studies;    Low mass;    Pb-Pb collisions;    Systematic uncertainties;    Transverse momenta;    Virtual photons;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/832/1/012036/pdf
DOI  :  10.1088/1742-6596/832/1/012036

来源: IOP

【 摘 要 】

The production of low-mass dielectrons is measured with ALICE at the LHC in pp, p-Pb and Pb-Pb collisions. The dielectron yield in p-Pb collisions in comparison to the expected hadronic cocktail shows an overall reasonable agreement. The production of direct virtual photons, visible as an excess over the hadronic cocktail, in Pb-Pb collisions is measured in two transverse momentum ranges. A feasibility study for the future LHC Run 3 indicates that it should be possible to extract an effective temperature with a combined statistical and systematic uncertainty of around 30%.