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Nucleon strangeness polarization from $$\varLambda /\bar{\varLambda }$$ hyperon production in polarized proton–proton collision at RHIC
We calculate the inclusive production of a polarized $\Lambda$ or $\bar{\Lambda}$ hyperon from the single longitudinally polarized proton and proton ($pp$) collision at RHIC. By comparing the data reported by the STAR Collaboration, we find that this process is sensitive to the polarization of strange and antistrange quarks of the …