Measurement of the inclusive jet cross-section in p+p collisions at $\sqrt{s}=200\,\mathrm{GeV}$ with the sPHENIX detector

The sPHENIX experiment is a next-generation collider detector at the Relativistic Heavy Ion Collider (RHIC) designed for rare jet and heavy flavor probes of the Quark-Gluon Plasma. The experiment features large‐acceptance electromagnetic (EMCal) and hadronic (HCal) calorimeters alongside a very high‐rate data acquisition and trigger system. In RHIC Run‐24, sPHENIX sampled $107,mathrm{pb}^{-1}$ of p+p collisions at $sqrt{s}=200,mathrm{GeV}$ using an efficient high-$p_{T}$ jet trigger representing a major increase in luminosity x acceptance compared to previous measurements for this collision energy, along with the first HCal at mid-rapidity at RHIC for measuring the contribution from neutral hadrons. This talk details the measurement of the inclusive jet cross-section as a function of transverse momentum measured with the full sPHENIX calorimeter system, reconstructing jets via the anti-$k_{T}$ algorithm with radius parameters R = 0.3, 0.4, and 0.6. Kinematic selections on the jets include pseudorapidity $|eta|<0.7$ and jet $p_{T} > 15 mathrm{GeV}$. The final cross-section is fully corrected for inefficiencies and unfolded for detector effects. This measurement serves as the pQCD baseline for measurements of single jet suppression in future sPHENIX Au+Au data-taking at RHIC, and as a key demonstration of the sPHENIX detector capability.