First Concurrent Extraction of the Leading-Order Scalar and Spin Proton Polarizabilities

Phys Rev Lett. 2022 Sep 2;129(10):102501. doi: 10.1103/PhysRevLett.129.102501.

Abstract

We performed the first simultaneous extraction of the six leading-order proton polarizabilities. We reached this milestone thanks to both new high-quality experimental data and an innovative bootstrap-based fitting method. These new results provide a self-consistent and fundamental benchmark for all future theoretical and experimental polarizability estimates.