Flavor Asymmetry of the Nucleon Sea and W -Boson Production
نویسندگان
چکیده
The advantage and feasibility of using W -boson production to extract unique information on the flavor asymmetry of the ū and d̄ 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 d̄/ū 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 d̄/ū ratios, are also presented.
منابع مشابه
Dynamical symmetry breaking in the sea of the nucleon.
We derive the nonanalytic chiral behavior of the flavor asymmetry d - u. Such behavior is a unique characteristic of Goldstone boson loops in chiral theories, including QCD, and establishes the unambiguous role played by the Goldstone boson cloud in the sea of the proton. Generalizing the results to the SU(3) sector, we show that strange chiral loops require that the s - s distribution be nonzero.
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