Analyticity and higher twists

Understand

The representation for infinite sum of higher twists (HT) tower in DIS implied by analyticity of virtual Compton amplitude is suggested.

• Its simplest realization allows to describe the Bjorken sum rule at all momentum transfers.
• It is stressed that TMDs accommodate the infinite tower of HT similar to non-local vacuum condensates for the case of vacuum matrix element.
• The D-term in hadronic GPDs bears some similarity to vacuum cosmological constant.