Speaker
Description
Jet substructure is a powerful tool for testing QCD in elementary particle collisions. The two-point energy-energy correlator (EEC), defined as the energy-weighted cross section of particle pairs inside jets, is a novel jet substructure observable probing the correlation of energy flow within jets. In pp collisions, the angular dependence of the EEC cross section shows a distinct separation of the perturbative and non-perturbative regimes, revealing the partonic dynamics of jet formation and the confinement of partons into hadrons. There have been an increasing number of theoretical studies predicting how the presence of a medium modifies the EECs with respect to the vacuum case. In this talk, we present measurements of the EECs for inclusive jets in p-Pb collisions at 5.02 TeV. By comparing our results to a measured pp baseline, we study the modifications of jet evolution caused by interactions with a cold nuclear medium and the presence of a high multiplicity environment. Understanding modifications due to cold nuclear matter effects is vital in interpreting EEC results in Pb$-$Pb collisions and separating hot and cold nuclear effects.
| Category | Experiment |
|---|---|
| Collaboration (if applicable) | ALICE |
