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We compute the light antiquark flavor asymmetry in the proton using theChiral Quark Model ($\chi_{\rm QM}$). The distribution functions for the lightantiquarks $\bar{d}(x)$ and $\bar{u}(x)$ have been extracted with the help ofexperimental data from NuSea/E866 and HERMES for the Bjorken$-x$ range $0.015 <x < 0.35$ as well from the most recent SeaQuest data for an extended $x$ range$0.13 < x < 0.45$. Our results on the $\bar{d}(x)-\bar{u}(x)$,$\frac{\bar{d}(x)}{\bar{u}(x)}$ and Gottfried Integral $I_G$ are in agreementwith the experimental data and confirm the presence of enhanced $\bar{d}$ seawhose origin is purely non-perturbative based on chiral symmetry breaking inQCD.

Non-perturbative Generation of Light Antiquark Flavor Asymmetry in Proton