sPHENIX cold QCD topical group

["Mattson, Gregory William" <mattson5 AT illinois.edu>]

Hello everyone,

I would like to propose an abstract for a talk at the APS meeting in March 2025, focusing on the pi0 and eta A_N measurement. The abstract submission deadline is next Friday, Oct 25. Please let me know if you have any feedback or suggestions.

Thanks,
Greg 

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The sPHENIX experiment is a new detector at the Relativistic Heavy Ion Collider at Brookhaven National Laboratory. Designed for precision measurements of jet and heavy-flavor observables, sPHENIX provides precision vertexing, tracking, and electromagnetic and hadronic calorimetry in the central pseudorapidity region |eta| < 1.1 with full azimuthal coverage. In addition to measurements of the quark-gluon plasma produced in heavy ion collisions, sPHENIX also enables new and improved measurements in cold QCD. This talk will describe the analysis of transverse single-spin asymmetries in pi0 and eta meson production using transversely polarized p+p collision data taken by sPHENIX in 2024. These asymmetries are sensitive to twist-3 multi-parton correlators, which are linked to the Sivers TMD PDF. Comparisons to existing results from the PHENIX experiment and to theoretical models will be shown.