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Title: Masses of ground-state mesons and baryons, including those with heavy quarks

Abstract

Using a confining, symmetry-preserving regularization of a vector x vector contact interaction, we compute the spectra of ground-state pseudoscalar and vector of ($f$$\bar{g}$$) mesons, scalar and axial-vector ($fg$) diquarks, and $$J^{P}$$ = 1/2(+), 3/2(+) ($fgh$) baryons, where $f, g, h$$ is an element of {$$u, d, s, c, b$}. The diquark correlations are essentially dynamical and play a key role in formulating and solving the three-valence-quark baryon problems. The baryon spectrum obtained from this largely algebraic approach reproduces the 22 known experimental masses with an accuracy of 2.9(2.4)%. It also possesses the richness of states typical of constituent-quark models, predicting many heavy-quark baryons not yet observed. This study indicates that diquark correlations are an important component of all baryons; and owing to the dynamical character of the diquarks, it is typically the lightest allowed diquark correlation that defines the most important component of a baryon's Faddeev amplitude.

Authors:
 [1];  [2];  [2];  [3];  [4];  [1]
  1. Nanjing Univ. of Posts and Telecommunications, Nanjing (China)
  2. Instituto de Física Teórica, Universidade Estadual Paulista, Rua Dr. Bento Teobaldo Ferraz, Sao Paulo (Brazil)
  3. Argonne National Lab. (ANL), Argonne, IL (United States)
  4. Departamento de Sistemas Físicos, Químicos y Naturales, Universidad Pablo de Olavide, Sevilla (Spain)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
OSTI Identifier:
1559883
Alternate Identifier(s):
OSTI ID: 1550588
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review D
Additional Journal Information:
Journal Volume: 100; Journal Issue: 3; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Yin, Pei-Lin, Chen, Chen, Krein, Gastão, Roberts, Craig D., Segovia, Jorge, and Xu, Shu-Sheng. Masses of ground-state mesons and baryons, including those with heavy quarks. United States: N. p., 2019. Web. doi:10.1103/PhysRevD.100.034008.
Yin, Pei-Lin, Chen, Chen, Krein, Gastão, Roberts, Craig D., Segovia, Jorge, & Xu, Shu-Sheng. Masses of ground-state mesons and baryons, including those with heavy quarks. United States. doi:10.1103/PhysRevD.100.034008.
Yin, Pei-Lin, Chen, Chen, Krein, Gastão, Roberts, Craig D., Segovia, Jorge, and Xu, Shu-Sheng. Thu . "Masses of ground-state mesons and baryons, including those with heavy quarks". United States. doi:10.1103/PhysRevD.100.034008.
@article{osti_1559883,
title = {Masses of ground-state mesons and baryons, including those with heavy quarks},
author = {Yin, Pei-Lin and Chen, Chen and Krein, Gastão and Roberts, Craig D. and Segovia, Jorge and Xu, Shu-Sheng},
abstractNote = {Using a confining, symmetry-preserving regularization of a vector x vector contact interaction, we compute the spectra of ground-state pseudoscalar and vector of ($f$$\bar{g}$) mesons, scalar and axial-vector ($fg$) diquarks, and $J^{P}$ = 1/2(+), 3/2(+) ($fgh$) baryons, where $f, g, h$ is an element of {$u, d, s, c, b$}. The diquark correlations are essentially dynamical and play a key role in formulating and solving the three-valence-quark baryon problems. The baryon spectrum obtained from this largely algebraic approach reproduces the 22 known experimental masses with an accuracy of 2.9(2.4)%. It also possesses the richness of states typical of constituent-quark models, predicting many heavy-quark baryons not yet observed. This study indicates that diquark correlations are an important component of all baryons; and owing to the dynamical character of the diquarks, it is typically the lightest allowed diquark correlation that defines the most important component of a baryon's Faddeev amplitude.},
doi = {10.1103/PhysRevD.100.034008},
journal = {Physical Review D},
number = 3,
volume = 100,
place = {United States},
year = {2019},
month = {8}
}

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