Generalised Parton Distributions in Continuum Schwinger Methods: Progresses, Opportunities and Challenges

This paper review the modelling efforts regarding Generalised Parton Distributions (GPDs) using continuum techniques relying on Dyson-Schwinger and Bethe-Salpeter equations. The definition and main properties of the GPDs are first recalled. Then, we detail the strategies developed in the last decade in the meson sector, highlighting that observables connected to the pion GPDs may be measured at future colliders. We also highlight the challenges one will face when targeting baryons in the future.

Automated summary

This paper reviews the efforts in modelling Generalised Parton Distributions (GPDs) using continuum techniques based on Dyson-Schwinger and Bethe-Salpeter equations. It first provides a definition and discusses the main properties of GPDs. Then, it details the strategies developed in the past decade in the meson sector, highlighting the potential measurements of pion GPDs at future colliders. The challenges in targeting baryons in the future are also emphasized.