Yin, Pei-LinChen, Chen [UNESP]Krein, Gastao [UNESP]Roberts, Craig D.Segovia, JorgeXu, Shu-Sheng2019-10-042019-10-042019-08-09Physical Review D. College Pk: Amer Physical Soc, v. 100, n. 3, 19 p., 2019.2470-0010http://hdl.handle.net/11449/186010Using a confining, symmetry-preserving regularization of a vector x vector contact interaction, we compute the spectra of ground-state pseudoscalar and vector of (f (g) over bar) 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.19engArtigo10.1103/PhysRevD.100.034008WOS:000480238400002Acesso aberto