Abstract <p>We remind the origin of the proton spin problem in deep inelastic scattering, then discuss the recent RHIC data and demonstrate that complementing the RHIC data with theoretical calculations in double-logarithmic approximation solves the proton spin problem even when contributions of the angular orbital momentum of the partons are not taken into account.</p>

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Present State of Proton Spin Problem

  • B. Ermolaev

摘要

Abstract

We remind the origin of the proton spin problem in deep inelastic scattering, then discuss the recent RHIC data and demonstrate that complementing the RHIC data with theoretical calculations in double-logarithmic approximation solves the proton spin problem even when contributions of the angular orbital momentum of the partons are not taken into account.