Mass of a short-range correlated nucleon *

2020/01/31 by Rong Wang, Xurong Chen, Xu-Rong Chen +2 · 6 citations
Physics and Astronomy · #Anomaly (physics) #Deuterium #Mass spectrum #Nuclear physics research studies #Nucleon #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #TRACE (psycholinguistics) #hep-ph #nucl-ex #nucl-th

paper · pdf · doi:10.1088/1674-1137/abccab

published in Chinese Physics C 45(2), 021001 (IOP Publishing) · 5 pages, 1 figure

openalex publication_date 2020/11/23 · openalex created_date 2020/12/07 · arxiv created 2021/01/22 · arxiv updated 2021/01/25 · openalex updated_date 2026/08/05

Abstract

Abstract Nucleon properties and structure should be modified by short-range correlations (SRC) among nucleons. By analyzing SRC ratio data, we extract the mass of a nucleon in an SRC pair and the expected number of pn-SRC pairs in deuterium, under the assumption that the SRC nucleon mass is universal for different nuclei. The nucleon mass of a two-nucleon SRC pair is = 852 ± 18 MeV, and the number of pn-SRC pairs in deuterium is =0.021 ± 0.005. The mass deficit of the strongly overlapping nucleon can be explained by the trace anomaly contribution to the mass in QCD or alternatively by the vacuum energy in the MIT bag model.

Citations

• QCD Analysis of the Mass Structure of the Nucleon
• Momentum sharing in imbalanced Fermi systems
• On the hadron mass decomposition
• The pressure distribution inside the proton
• The AME2016 atomic mass evaluation (II). Tables, graphs and references
• A Large Hadron Electron Collider at CERN: Report on the Physics and Design Concepts for Machine and Detector