Recent STAR results on W production and asymmetry in polarized [arrow over p] + [arrow over p] collisions at √r = 500 GeV
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Alternative title
Recent STAR results on W production and asymmetry in polarized p→+p→ collisions at √r = 500 GeV
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The production of W± bosons in longitudinally polarized proton + proton collisions at RHIC is a unique way to study the flavor-dependent spin structure of the proton, since at leading order it couples directly and exclusively to specific quark flavor pairings: u + [bar over d] → W[superscript +] and [bar over u] + d → W[superscript -]. Measurement of the longitudinal single-spin asymmetry of the electron decay daughters in W production is sensitive to the polarizations of the quarks involved. Results from the first proton-proton collisions at √r = 500 GeV in 2009 are presented, along with a discussion of the forward-rapidity tracking upgrade.
Date issued
2014-01Department
Massachusetts Institute of Technology. Laboratory for Nuclear ScienceJournal
Physics of Particles and Nuclei
Publisher
Springer US
Citation
STAR Collaboration, and Ross Corliss. “Recent STAR Results on W Production and Asymmetry in Polarized $$\vec P + \vec P$$ Collisions at √r = 500 GeV.” Physics of Particles and Nuclei 45.1 (2014): 70–72.
Version: Author's final manuscript
ISSN
1063-7796
1531-8559