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|Paper IPM / Particles And Accelerator / 16577||
We study the impact of intrinsic strange (IS) component of nucleon sea on the global analysis of parton distribution functions (PDFs) considering a wide range of experimental data. To this aim, we consider two scenarios on the basis of BHPS model results for the IS distribution. In the first scenario, we apply the results presented through the BHPS model and in the second scenario we use its evolved distributions. For each scenarios, we present the limit of the IS probability PssÂ¯5 for the standard tolerance criteria ï¿½?ï¿½?2=1 and 18.112 at 1ï¿½? and 4ï¿½? levels. Our results show that the experimental data can tolerate an IS component with a greater probability PssÂ¯5 if one employs the second scenario. We obtain PssÂ¯5ï¿½??0.01 and PssÂ¯5ï¿½??0.025 for ï¿½?ï¿½?2=1 and 18.112, respectively, at the 4ï¿½? level. We also calculate the ratio of strange-to-light sea-quark densities rs in the proton both including and excluding the IS component. Our results show that one can obtain a higher value for the ratio rs if the IS component is included.
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