Jet quenching is a well-established probe of the QGP in large collision systems such as Au+Au and Pb+Pb, but is not observed in smaller p+A collisions despite the presence of collectivity. This makes it important to study its dependence on system size. O+O collisions offer an ideal opportunity, bridging the gap between small and large systems. In these proceedings, we present the measurements of the following observables related to jet quenching: inclusive charged hadron RAA and RCP at high transverse momentum (pT), inclusive jet RCP, and semi-inclusive hadron+jet ICP, using O+O collisions data collected with the STAR detector in 2021 at √sNN = 200 GeV. For jet measurements, combinatorial background is subtracted based on the event mixing technique, while background fluctuations and detector effects are corrected via unfolding. Inclusive charged hadron and jet RCP and h+jet ICP are found to be below unity, indicating suppression relative to peripheral events.
Sijie Zhang (Fri,) studied this question.