Chiral and trace anomalies in deeply virtual Compton scattering. II. QCD factorization and beyond
Chiral and trace anomalies in deeply virtual Compton scattering. II. QCD factorization and beyond
We extend the discussion of the recently discovered ``anomaly poles'' in QCD Compton scattering. We perform the complete one-loop calculation of the Compton amplitude using momentum transfer $t$ as the regulator of collinear divergences. In the gluon channel, we confirm the presence of poles $1/t$ in both the real and …