NuTeV anomaly versus strange-antistrange asymmetry

摘要

We report the correction from the asymmetric strange- antistrange sea of the nucleon by using both the light-cone baryon-meson fluctuation model and the chiral quark model, and show that a significant part of the NuTeV anomaly can be explained by the strange-antistrange asymmetry. We also show that the calculated s/(s) over bar asymmetry are compatible with the NuTeV data by including some additional symmetric s/(s) over bar quark contribution.