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We show that description of the quark and gluon helicities in the Double-Logarithmic Approximation (DLA) solves the proton spin puzzle. First we explain how to solve this problem in the straightforward way by combining the RHIC data and expressions for the helicities calculated in DLA. These expressions are complicated to use, so we approximate the helicities by simpler DL expressions and obtain a tentative solution to the puzzle.
B. I. Ermolaev (Mon,) studied this question.