Femtoscopy at High mT in Heavy-Ion Collisions with ALICE

Workshop for Young Scientists on the Physics of Ultrarelativistic Nucleus–Nucleus Collisions 2012

Beck, Hans^1

Institut für Kernphysik, Johann Wolfgang Goethe-Universität, Frankfurt, Germany^1

关键词: Correlation measurement;    Emitting sources;    Heavy ion collision;    Hydrodynamic model;    Particle identifications;    Source sizes;    Transverse mass;    Two particle correlation;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/446/1/012013/pdf
DOI  :  10.1088/1742-6596/446/1/012013

来源: IOP

【 摘 要 】

Femtoscopic two-particle correlations carry important information about the particle emitting source. Of particular interest is the mTdependence of extracted source radii, which is introduced by the dynamics of the system created in heavy-ion collisions. The reach in mTof the traditional pion-pion correlation measurements is limited by the small rest mass of the examined particles. Thus, it can be extended with the analysis of pairs of heavier particles: kaons and protons, and proton-lambda pairs, being the heaviest system to extract source sizes so far. The excellent particle identification capabilities and high statistics datasets of ALICE allow to extract source radii differentially in transverse mass and provide new constraints on hydrodynamic models.