RT Journal Article
T1 First radial excitations of mesons and diquarks in a contact interaction
A1 Paredes Torres, Gustavo
A1 Gutiérrez Guerrero, Laura Xiomara
A1 Bashir, Adnan
A1 Miramontes López, Ángel Salvador
AB We present a calculation for the masses of the first radially excited states of 40 mesons and diquarks made upof u, d, s, c, and b quarks, including states that contain one or both heavy quarks. To this end, we employ acombined analysis of the Bethe-Salpeter and Schwinger-Dyson equations within a self-consistent andsymmetry-preserving vector-vector contact interaction. The same set of parameters describes ground andexcited states of mesons and their diquark partners. The wave function of the first radial excitation contains azerowhose location is correlated with an additional parameter dF which is a function of dressed quark masses.Our results satisfy the equal spacing rules given by the Gell-Mann Okubo mass relations. Wherever possible,we make comparisons of our findings with known experimental observations as well as theoretical predictionsof several other models and approaches including lattice quantum chromodynamics, finding a very goodagreement. We report predictions for a multitude of radial excitations not yet observed in experiments.
PB American Physical Society
SN 2470-0010
SN 2470-0029 (electrónico)
YR 2024
FD 2024-06
LK https://hdl.handle.net/10272/24587
UL https://hdl.handle.net/10272/24587
LA eng
NO Paredes-Torres, G., Gutiérrez-Guerrero, L. X., Bashir, A., & Miramontes, Á. S. (2024). First radial excitations of mesons and diquarks in a contact interaction. In Physical Review D (Vol. 109, Issue 11). American Physical Society (APS). https://doi.org/10.1103/physrevd.109.114006
NO G. P.-T., L. X. G.-G., and also A. S. M. acknowledge the financial support provided to them by the National Councilfor Humanities, Science and Technology (CONAHCyT), Mexico, through their programs: (i) Beca de Posgrado enMéxico, (ii) Investigadoras e Investigadores por México, and (iii) Postdoctorados Nacionales por México. Thisresearch was also supported by Coordinación de la Investigación Científica (CIC) of the University of Michoacan through Grant No. 4.10 and Ayudas Beatriz Galindo, Spain.
DS Repositorio Institucional de la Universidad de Huelva
RD 31 may 2026