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Single-spin asymmetry appears due to the interference of single and double gluon exchange between protons. A heavy fermion model is used to describe the jet production in the interaction of gluon with the proton implying the further averaging over its mass. As usually in one-spin correlations, the imaginary part of the double gluon exchange amplitude play… (More)
In this paper we study the almost everywhere convergence of the expansions related to the self-adjoint extension of the Laplace operator. The sufficient conditions for summability is obtained. For the orders of Riesz means, which greater than critical index N −1 2 we established the estimation for maximal operator of the Riesz means. Note that when order α… (More)
In this work we established asymptotical behavior for Riesz means of the spectral function of the Laplace operator on unit sphere.