Pionic hydrogen and deuterium

D. Gotta, L. M. Simons

SciPost Phys. Proc. 5, 014 (2021) · published 6 September 2021

Proceedings event

Review of Particle Physics at PSI

Abstract

The measurement of strong-interaction shift and broadening in pionic hydrogen and deuterium yields pion-nucleon scattering lengths as well as the threshold pion-production strength on isoscalar NN pairs. Results from recent high-resolution experiments at PSI using crystal spectrometers allow important comparisons with the outcome of the modern low-energy description of QCD within the framework of effective field theories.


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