Journalartikel

Jahr der Veröffentlichung: 2019

Zeitschrift: Physical Review D

Bandnummer: 100

Heftnummer: 3

ISSN: 2470-0010

eISSN: 2470-0029

Open Access Status: Green

DOI Link: https://doi.org/10.1103/PhysRevD.100.034008

Verlag: American Physical Society

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 (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.

Harvard-Zitierstil: Yin, P., Chen, C., Krein, G., Roberts, C., Segovia, J. and Xu, S. (2019) Masses of ground-state mesons and baryons, including those with heavy quarks, Physical Review D, 100(3), Article 034008. https://doi.org/10.1103/PhysRevD.100.034008

APA-Zitierstil: Yin, P., Chen, C., Krein, G., Roberts, C., Segovia, J., & Xu, S. (2019). Masses of ground-state mesons and baryons, including those with heavy quarks. Physical Review D. 100(3), Article 034008. https://doi.org/10.1103/PhysRevD.100.034008