Jet-hadron correlations in STAR

Understand

In recent years, the study of dihadron correlations has been one of the primary methods used to investigate the propagation and modification of hard-scattered partons through the QGP.

• Due to recent advances in jet-finding algorithms, it is now possible to use reconstructed jets in these correlation studies, extending the kinematic reach compared to dihadron analyses.
• The results of the jet-hadron correlation analysis indicate a broadening and softening of jets that interact with the medium.
• Jet-hadron correlations can also be used to assess the systematics of other jet-like correlation analyses, such as 2+1 correlations.