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Paper   IPM / Particles And Accelerator / 16577
School of Particles and Accelerator
  Title:   Improved Determination of Strange Distribution Function from the Global Analysis Using BHPS Model
1.  Maral Salajegheh
2.  Mohammad Moosavi Nejad
3.  Shahin Atashbar Tehrani
  Status:   Published
  Journal: Few-Body systems
  No.:  16
  Vol.:  62
  Year:  2021
  Supported by:  IPM
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 Pss¯5 for the standard tolerance criteria �?�?2=1 and 18.112 at 1�? and 4�? levels. Our results show that the experimental data can tolerate an IS component with a greater probability Pss¯5 if one employs the second scenario. We obtain Pss¯5�??0.01 and Pss¯5�??0.025 for �?�?2=1 and 18.112, respectively, at the 4�? 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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