Speaker
Andreas Metz
(Temple University)
Description
Different decompositions (sum rules) for the proton mass have been proposed in the literature. All of them are related to the energy-momentum tensor in quantum chromodynamics (QCD). In this talk, we will provide an overview and a comparison of the various mass decompositions by highlighting recent developments. Special attention will be paid to the physical interpretation of the individual terms in the sum rules, and to the associated renormalized operators. This discussion includes the role played by the trace anomaly and the sigma terms. We will also present numerical results for the mass decompositions based on currently available information.
Primary authors
Andreas Metz
(Temple University)
Barbara Pasquini
(University of Pavia and INFN, Pavia)
Simone Rodini
(University of Pavia & INFN Pavia)
