Recent results from the STAR spin program at RHIC
M. Sarsour (for the STAR Collaboration)
TL;DR
This paper reports recent experimental results from the STAR collaboration at RHIC, focusing on measuring spin asymmetries in polarized proton-proton collisions to understand the proton's spin structure.
Contribution
It presents new measurements of spin asymmetries in various particle production processes, advancing the understanding of gluon and quark contributions to proton spin.
Findings
Evidence of gluon polarization contributions
Measurement of transverse spin asymmetries
Insights into orbital angular momentum of partons
Abstract
The STAR experiment uses polarized p+p collisions at RHIC to determine the contributions to the spin of the proton from gluon spin and from orbital angular momentum of the quarks and gluons. Selective STAR measurements of the longitudinal double spin asymmetry for inclusive jet and inclusive hadron production are presented here. In addition, we report measurements of the transverse spin asymmetry for di-jet production at mid-rapidity and the transverse single-spin asymmetry for forward pi0 production
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