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First Extraction of Polarized Sea Asymmetry from Weak Boson Production in Proton–Proton Collisions

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Metz, Andreas
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Conference proceeding
Date
2022-03-15
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Physics
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Global QCD analysis
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http://hdl.handle.net/20.500.12613/10530
 http://dx.doi.org/10.34944/dspace/10492
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CocuzzaEtAl-ConferenceProceeding-2022-12.pdf
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http://dx.doi.org/10.7566/jpscp.37.020307
Abstract
We present a global QCD analysis of spin-dependent parton distribution functions (PDFs) that includes the latest polarized W-lepton production data from the STAR collaboration at RHIC. These data allow the first data-driven extraction of a nonzero polarized light quark sea asymmetry Δu¯−Δd¯ within a global QCD framework with minimal theoretical assumptions.
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First Extraction of Polarized Sea Asymmetry from Weak Boson Production in Proton–Proton Collisions Christopher Cocuzza, Andreas Metz Proceedings of the 24th International Spin Symposium (SPIN2021), 10.7566/JPSCP.37.020307
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Journal of the Physical Society of Japan
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JPS Conference Proceedings, Proceedings of the 24th International Spin Symposium (SPIN2021), Vol. 37
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