Jet-Hadron Correlations in pp and Pb-Pb Collisions with ALICE

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

Connors, Megan^1

Yale University, New Haven, CT 06520, United States^1

关键词: Angular correlations;    Electromagnetic calorimeter;    Hadron correlations;    Jet quenching;    Measurements of;    Pb-Pb collisions;    Pp collisions;    Tracking system;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/446/1/012009/pdf
DOI  :  10.1088/1742-6596/446/1/012009

来源: IOP

【 摘 要 】

Jet quenching has been observed at both RHIC and LHC energies, indicating that partons lose energy as they traverse the medium. To probe the effcts of this partonic energy loss, measurements of the angular correlations between fully reconstructed jets and charged tracks in Pb-Pb collisions are studied. Fully reconstructing a jet provides access to the kinematics of the initial hard scattering while allowing us to study the distribution of hadrons on the away side from the modified recoil jet. Here we present first measurements of jet-hadron correlations in pp collisions at √s=2.76 TeV and an outlook for Pb-Pb collisions. The jets in this analysis are reconstructed from the 2011 data set using both charged tracks and neutral energy measured in the ALICE tracking system and the electromagnetic calorimeter respectively.