Flavor Asymmetry of the Nucleon Sea and W Boson Production

Details Flavor Asymmetry of the Nucleon Sea and W Boson Production Flavor Asymmetry of the Nucleon Sea and W Boson Production

2009-05-23

arxiv.org/abs/0905.3783v2

Phys. Lett. B 680 (2009), pp. 231-234

Physics

Nuclear Physics

Nuclear Experiment

7 pages, 4 figures (updated figures)

Scientific paper

10.1016/j.physletb.2009.08.070

The advantage and feasibility of using $W$-boson production to extract unique information on the flavor asymmetry of the $\bar u$ and $\bar d$ sea-quark distributions in the proton are examined. The $W^+$ and $W^-$ production cross section ratios in $p+p$ collisions are shown to be sensitive to the $\bar d/ \bar u$ ratios, and they are free from charge-symmetry-breaking and nuclear-binding effects. The feasibility for measuring these ratios at the RHIC and LHC proton-proton colliders, as well as the expected sensitivity to the $\bar d/ \bar u$ ratios, are also presented.

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