Theory Seminar - Carlota Andres

On Monday, April 21, at 1 p.m., Carlota Andres of the Massachusetts Institute of Technology will present "Probing Jet Substructure in Heavy-Ion Collisions Through Energy Correlators" in CEBAF Center rm. L102 and via Zoom.

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Abstract: Recent advances in conformal field theory have reformulated collider jet substructure as the study of energy correlators. In this talk, I will introduce energy correlator observables and the advantages of their use to probe the quark-gluon plasma  produced in heavy-ion collisions. I will discuss the recent measurement of the two-point energy correlator (EEC) in Pb-Pb collisions at the Large Hadron Collider and introduce the first jet substructure observable that corrects for the leading-order effects of selection bias due to energy loss —a longstanding challenge in interpreting jet substructure measurements in heavy-ion collisions. Finally, using the light-ray operator product expansion (OPE), I will show that nuclear modifications of the EEC in both Pb-Pb and p-Pb collisions are driven by an enhanced twist-4 contribution. These findings open new avenues for a more precise understanding of nuclear modifications of jet substructure.