Towards data-driven evaluation of the nucleon polarizability effects contributing to the Lamb shift

16 Oct 2023, 17:50
20m
St Lioba Raum

St Lioba Raum

Speaker

Volodymyr Biloshytskyi (KPH JGU Mainz)

Description

The Bernabéu-Tarrach sum rule, the "virtual sibling" of the Baldin sum rule, will be discussed. It could potentially offer an additional data-driven constraint on the electric polarizabilities of the nucleon. Moreover, its convergence implies the sum rule for the unknown subtraction function in the two-photon exchange contribution to the Lamb shift. The verification of these sum rules will be demonstrated within the framework of covariant chiral perturbation theory and the naive parton model.

Parallel Session Low-Energy Nucleon Structure

Primary author

Volodymyr Biloshytskyi (KPH JGU Mainz)

Presentation materials