6533b824fe1ef96bd12809fe

RESEARCH PRODUCT

QCD radiative corrections to the soft spectator contribution in the wide angle Compton scattering

Nikolai KivelMarc Vanderhaeghen

subject

Quantum chromodynamicsPhysicsParticle physicsNuclear and High Energy PhysicsScatteringNuclear TheoryCompton scatteringFOS: Physical sciencesSoft modesHigh Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)Soft-collinear effective theoryFactorizationRadiative transferNucleonNuclear Experiment

description

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.

yearjournalcountryeditionlanguage
2014-03-27Nuclear Physics B
10.1016/j.nuclphysb.2014.03.019http://dx.doi.org/10.1016/j.nuclphysb.2014.03.019