Aug 8 – 13, 2022
Hörsaalzentrum Poppelsdorf
Europe/Berlin timezone

GPDs in non-symmetric frames

Aug 11, 2022, 9:20 AM
CP1-HSZ/0.010 (CP1-HSZ) - HS2 (CP1-HSZ)

CP1-HSZ/0.010 (CP1-HSZ) - HS2


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Oral Presentation Hadron Structure Hadron Structure


Shohini Bhattacharya (BNL)


It is often taken for granted that Generalized Parton Distributions (GPDs) are defined in the "symmetric" frame, where the transferred momentum is symmetrically distributed between the incoming/outgoing hadrons. However, such frames pose more computational challenges for the lattice QCD practitioners. In this talk, we lay the foundation for lattice QCD calculations of GPDs in non-symmetric frames, where the transferred momentum is not symmetrically distributed between the incoming/outgoing hadrons. The novelty of our approach relies on the parameterization of the matrix elements in terms of the so-called Generalized Ioffe-time Distributions (ITD), which helps in not only isolating but also reducing part of the higher-twist contaminations as a byproduct. This work opens possibilities for faster and more effective computations of GPDs.

Primary authors

Andreas Metz (Temple University) Aurora Scapellato (Temple University) Fernanda Steffens (Helmholtz-Institut für Strahlen- und Kernphysik) Jack Dodson (Temple University) Krzysztof Cichy (Faculty of Physics, Adam Mickiewicz University) Martha Constantinou (Temple University) Shohini Bhattacharya (BNL) Swagato Mukherjee (BNL) Xiang Gao Yong Zhao (ANL)

Presentation materials