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DOE OSTI · 2500398

Nonlocal chiral anomaly and generalized parton distributions

Bhattacharya, Shohini (ORCID:000000018536082X)·Hatta, Yoshitaka (ORCID:0000000168803238)·Schoenleber, Jakob (ORCID:0000000310590350)
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Abstract

We discuss the nonlocal generalization of the QCD chiral anomaly along the light cone and derive relations between twist-two, twist-three, and twist-four generalized parton distributions (GPDs) mediated by the anomaly. We further establish the connection to the “anomaly pole” in the GPD E ˜ recently identified in the perturbative calculation of the Compton scattering amplitudes, and demonstrate its cancellation at the GPD level. Our work helps elucidate the previously unexplored connection between GPDs, the chiral anomaly, and the mass generation of the η ′ meson. Published by the American Physical Society 2025

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73 NUCLEAR PHYSICS AND RADIATION PHYSICSAnomaliesAtomicForm factorsGauge theoriesNuclear and Particle PhysicsQuantum chromodynamics

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Bhattacharya, Shohini (ORCID:000000018536082X), Hatta, Yoshitaka (ORCID:0000000168803238), Schoenleber, Jakob (ORCID:0000000310590350). 2025-01-14. Nonlocal chiral anomaly and generalized parton distributions. https://doi.org/10.1103/physrevd.111.014013

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