  We derive the complete factorization formula for the leading power
contribution in wide angle Compton scattering. It consists of the soft- and
hard-spectator contributions. The hard-spectator contribution is well known and
defined in the form of the convolution of a hard kernel with the nucleon
distribution amplitudes. The soft-spectator contribution describes the
scattering which involves the soft modes. We use the soft collinear effective
theory in order to define this term in a field theoretical approach. Using the
SCET framework we provide the proof of the factorization formula. We also
compute the next-to-leading QCD corrections to the hard coefficient function of
the soft spectator contribution and perform a phenomenological analysis of
existing experimental data within the developed formalism.

High Energy Physics - Phenomenology