Mass of a short-range correlated nucleon Supported by the Strategic Priority Research Program of Chinese Academy of Sciences (XDB34030301) and the National Science Foundation China (11305007),Chinese Physics C

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Mass of a short-range correlated nucleon Supported by the Strategic Priority Research Program of Chinese Academy of Sciences (XDB34030301) and the National Science Foundation China (11305007)
Chinese Physics C ( IF 3.6 ) Pub Date : 2021-01-20 , DOI: 10.1088/1674-1137/abccab
Rong Wang _{1,

2} , Xu-Rong Chen _{1,

2,

3} , Tao-Feng Wang ₄

Affiliation

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 $m_{\rm{SRC}}$ = 852 18 MeV, and the number of pn-SRC pairs in deuterium is $n^{d}_{\rm{SRC}}$ =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.

更新日期：2021-01-20

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