First jet quenching results from sPHENIX

by Virginia Bailey (Georgia State University)

Tuesday 23 Sept 2025, 11:00 → 12:00 US/Eastern

The sPHENIX detector at the Relativistic Heavy Ion Collider (RHIC) is designed to study the small scale structure of the quark-gluon plasma (QGP) created in heavy ion collisions. Jets, produced in hard scatterings early in the collisions, provide an ideal probe for the full evolution of the QGP. The sPHENIX experiment includes large acceptance, electromagnetic (EMCal) and hadronic (HCal) calorimeter systems, along with a high-rate data acquisition plus trigger system, making it an excellent detector for measuring jets. In RHIC Run-24, sPHENIX sampled 107/pb of p+p collision data with high-pT jet and photon triggers, and collected a small minimum bias dataset of Au+Au collisions. The p+p dataset allows for precision jet measurements which can be used as a reference for Au+Au collisions, while the Au+Au allows for commissioning of the detector and first measurements of jet modification from the presence of the QGP ahead of the longer RHIC Run-25. This talk will present the first jet results from the Run-24 datasets, including a new result showing the increased momentum imbalance between back-to-back jets in Au+Au collisions compared to those in p+p. This talk will also discuss the future of the sPHENIX jet program with the ongoing data taking from Run-25.

Video link

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