Mass of a short-range correlated nucleon

• 来源期刊: 中国物理C（英文版）
• 年，卷（期）: 2021,（2）
• 所属期刊栏目: LETTERS
• 页码范围: 1-5
• 页数: 5页
• 语种: 英文
• DOI: 10.1088/1674-1137/abccab

摘要

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 msRC= 852 士 18 MeV,and the number of pn-SRC pairs in deuterium is ngRc=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.