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We reexamine the shapes of the strange quark parton distribution functions(PDFs) of the proton by means of quantum chromodynamics (QCD) analysis of{\hera} deep inelastic scattering cross section measurement at DESY, andinclusive gauge boson production and $W$ boson production associated with acharm quark from LHC at CERN. We find that there is an overall agreement on thestrange quark distributions obtained from CMS $W$ + charm and ATLAS $W/Z$ dataat the parton momentum fraction range $x \lesssim 10^{-2}$. Meanwhile, there isalso a strong tension between these data towards large $x$. We find that thistension fades away if the ATLAS measurement of $W/Z$ production is analyzedtogether with the ATLAS $W$ + charm data. The $W/Z$ and $W$ + charm data bothfrom ATLAS and CMS experiments agree that the proton strangeness is enhancedtowards small momentum fraction $x$ and is smoothly suppressed at large $x$.Furthermore, a strong $x$ dependence of the strange-to-non-strange parton ratio$R_s(x,Q^2)$ is observed.

Reinterpretation of proton strangeness between ATLAS and CMS measurements