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

dc.contributor.authorYin, Pei-Lin
dc.contributor.authorChen, Chen [UNESP]
dc.contributor.authorKrein, Gastão [UNESP]
dc.contributor.authorRoberts, Craig D.
dc.contributor.authorSegovia, Jorge
dc.contributor.authorXu, Shu-Sheng
dc.contributor.institutionNanjing University of Posts and Telecommunications
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.contributor.institutionArgonne National Laboratory
dc.contributor.institutionUniversidad Pablo de Olavide
dc.contributor.institutionJustus-Liebig-Universität Gießen
dc.description.abstractUsing a confining, symmetry-preserving regularization of a vector×vector contact interaction, we compute the spectra of ground-state pseudoscalar and vector (fg) mesons, scalar and axial-vector (fg) diquarks, and JP=1/2+,3/2+ (fgh) baryons, where f,g,h∈{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.en
dc.description.affiliationNew Energy Technology Engineering Laboratory of Jiangsu Province School of Science Nanjing University of Posts and Telecommunications
dc.description.affiliationInstituto de Física Teórica Universidade Estadual Paulista, Rua Dr. Bento Teobaldo Ferraz, 271
dc.description.affiliationPhysics Division Argonne National Laboratory
dc.description.affiliationDepartamento de Sistemas Físicos Químicos y Naturales Universidad Pablo de Olavide
dc.description.affiliationInstitut für Theoretische Physik Justus-Liebig-Universität Gießen
dc.description.affiliationUnespInstituto de Física Teórica Universidade Estadual Paulista, Rua Dr. Bento Teobaldo Ferraz, 271
dc.identifier.citationPhysical Review D, v. 100, n. 3, 2019.
dc.relation.ispartofPhysical Review D
dc.titleMasses of ground-state mesons and baryons, including those with heavy quarksen