Lattice QCD calculation of the proton electromagnetic polarizability

27 Jul 2021, 05:30
15m
Oral presentation Hadron Structure Hadron Structure

Speaker

Xuan-He Wang

Description

The electromagnetic polarizability is an important property of nucleon. It describes the response of a nucleon when it is placed in an external electric or magnetic field. The polarizability can be extracted from the real or virtual Compton scattering process $\gamma N \to \gamma N$. We develop a method to calculate the the Compton scattering matrix elements of nucleon from a 4-point correlation function on the lattice. Then we show that the electromagnetic polarizability can be extracted from the lattice data subsequently.

Primary author

Co-authors

Xu Feng (Peking University) Luchang Jin

Presentation materials