Mass of a short-range correlated nucleon  

作　　者：Rong Wang Xu-Rong Chen Tao-Feng Wang 王荣;陈旭荣;王涛峰(Institute of Modern Physics,Chinese Academy of Sciences,Lanzhou 730000,China;School of Nuclear Science and Technology,University of Chinese Academy of Sciences,Beijing 100049,China;Guangdong Provincial Key Laboratory of Nuclear Science,Institute of Quantum Matter,South China Normal University,Guangzhou 510006,China;School of Physics,Beihang University,Beijing 100191,China)

机构地区：[1]Institute of Modern Physics,Chinese Academy of Sciences,Lanzhou 730000,China [2]School of Nuclear Science and Technology,University of Chinese Academy of Sciences,Beijing 100049,China [3]Guangdong Provincial Key Laboratory of Nuclear Science,Institute of Quantum Matter,South China Normal University,Guangzhou 510006,China [4]School of Physics,Beihang University,Beijing 100191,China

出　　处：《Chinese Physics C》2021年第2期1-5,共5页中国物理C（英文版）

基　　金：Supported by the Strategic Priority Research Program of Chinese Academy of Sciences(XDB34030301);the National Science Foundation China(11305007)。

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 m_(SRC)=852±18 MeV,and the number of pn-SRC pairs in deuterium is n^(d)_(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.

关 键 词：nucleon mass nucleon-nucleon short-range correlation quasielastic scattering 

分 类 号：O571[理学—粒子物理与原子核物理]