Mixing effects on spectroscopy and partonic observables of heavy mesons with logarithmic confining potential in a light-front quark model
Jul 2, 2024
20 pages
Published in:
- Phys.Rev.D 110 (2024) 9, 094021
- Published: Nov 1, 2024
e-Print:
- 2407.02479 [hep-ph]
DOI:
- 10.1103/PhysRevD.110.094021 (publication)
View in:
Citations per year
Abstract: (APS)
Using the variational principle, we systematically investigate the mass spectra and wave functions of both and state heavy pseudoscalar () and vector () mesons within the light-front quark model. This approach incorporates a Coulomb plus logarithmic confinement potential to accurately describe the constituent quark and antiquark dynamics. Additionally, spin hyperfine interactions are introduced perturbatively to compute the masses of pseudoscalar and vector mesons. The present analyses of the and states require the consideration of mixing between them to account for empirical constraints. These constraints include the mass gap , where and the hierarchy of the decay constants . We find the optimal value of the mixing angle to be , significantly enhancing the consistency between our spectroscopic predictions and the experimental data compiled by the Particle Data Group. Furthermore, based on the predicted mass, the newly observed resonance could be assigned as a state in the meson family. The study also reports various pertinent observables, including twist-two distribution amplitudes, electromagnetic form factors, charge radii, moments, and transition form factors that are found to be consistent with both available lattice simulations and experimental data. In addition, our predicted branching ratios for the channels of as well as rare decays of and appear in accordance with experimental data.Note:
- 20 pages, 9 figures
References(103)
Figures(13)
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