Wave functions of (I,JP) = (12,3?) baryons 2

被引：9

作者：

Liu, Langtian ^{[1
,2
]}

Chen, Chen ^{[3
,4
]}

Roberts, Craig D. ^{[1
,2
]}

机构：

[1] Nanjing Univ, Sch Phys, Nanjing 210093, Jiangsu, Peoples R China

[2] Nanjing Univ, Inst Nonperturbat Phys, Nanjing 210093, Jiangsu, Peoples R China

[3] Univ Sci & Technol China, Interdisciplinary Ctr Theoret Study, Hefei 230026, Anhui, Peoples R China

[4] Peng Huanwu Ctr Fundamental Theory, Hefei 230026, Anhui, Peoples R China

来源：

PHYSICAL REVIEW D | 2023年 / 107卷 / 01期

基金：

中国国家自然科学基金;

关键词：

NUCLEON; DYSON; CONFINEMENT; THEOREM; FORCES; MODELS; QCD;

D O I：

10.1103/PhysRevD.107.014002

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Using a Poincare-covariant quark + diquark Faddeev equation, we provide structural information on the four lightest (I, JP) = (1 2 , 3 -/+) baryon multiplets. These systems may contain five distinct types of diquarks; 2 but in order to obtain reliable results, it is sufficient to retain only isoscalar-scalar and isovector-axialvector correlations, with the latter being especially important. Viewed with low resolution, the Faddeev equation description of these states bears some resemblance to the associated quark model pictures; namely, they form a set of states related via orbital angular momentum excitation: the negative parity states are primarily P-wave in character, whereas the positive parity states are D wave. However, a closer look reveals far greater structural complexity than is typical of quark model descriptions, with P, D, S, F waves and interferences between them all playing a large role in forming observables. Large momentum transfer resonance electroexcitation measurements can be used to test these predictions and may thereby provide insights into the nature of emergent hadron mass.

引用

页数：15

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