Proton mass decomposition: naturalness and interpretations
arXiv:2102.07830
Abstract
I discuss the scope and naturalness of the proton mass decomposition (or sum rule) published in PRL74, 1071 (1995) and answer a few criticisms that appeared recently in the literature, focusing particularly on its interpretation and the quantum anomalous energy contribution. I comment on the so-called frame-independent or invariant-mass decomposition from the trace of the energy-momentum tensor. I stress the importance of measuring the quantum anomalous energy through experiments. Finally, I point out a large discrepancy in the scalar radius of the nucleon extracted from vector-meson productions and lattice QCD calculations.
Updated with mass radius discussions, 10 pages, no figure
Cited by in corpus (6)
- QCD Analysis of Near-Threshold Photon-Proton Production of Heavy Quarkonium
- Perturbative QCD Analysis of Near Threshold Heavy Quarkonium Photoproduction at Large Momentum Transfer
- Extraction of the proton mass radius from the vector meson photoproductions near thresholds
- Proton Mass Decomposition and Hadron Cosmological Constant
- Scale symmetry breaking, quantum anomalous energy and proton mass decomposition
- Central elastic scattering