Speaker
Description
SpinQuest is the Fermilab fixed-target Drell-Yan (DY) experiment that aims to measure the sea-quark Sivers functions by impinging a 120 GeV unpolarized proton beam on transversely polarized ammonia, NH$_3$, and deuterated ammonia, ND$_3$, targets. In this measurement, the DY process also offers clean access to the transversity distribution, $h_1(x)$, quantifying the probability of scattering off a transversely polarized parton, carrying a momentum fraction $(x)$, within a transversely polarized nucleon with its spin aligned or anti-aligned to its parent spin. Such a study provides critical insights into sea quarks' contributions to nucleon polarization. To this end, a multi-threaded Graphics Processing Unit (GPU) algorithm has been developed to perform real-time data processing and monitoring with optimized parallelization capabilities. In this talk, the performance of the GPU-based online reconstruction and visualization algorithm will be presented, followed by a description of ongoing efforts to accomplish a model-independent extraction of $h_1(x)$ distributions.
This work is supported in part by the U.S. DOE award $\#$: DE-FG02-07ER41528.
